Anna will descend at a slower rate than Philip. The descent rate of a person under a parachute depends on several factors, including the size of the parachute, the weight of the person, and the air resistance or drag.
A larger parachute, Anna will have more air resistance or drag acting on her compared to Philip, who has a smaller parachute. This increased drag will slow down Anna's descent rate, causing her to descend more slowly than Philip. When Anna and Philip go parachuting, the air resistance or drag force experienced by their parachutes is proportional to the surface area of the parachute. As Anna uses a larger parachute than Philip, her parachute will have a larger surface area, leading to a larger drag force.
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Hello people ~
When a comb rubbed with dry hair attracts pieces of paper. This is because the______
(a) comb polarizes the piece of paper
(b)comb induces a net dipole moment opposite to the direction of field
(c)electric field due to the comb is uniform
(d) comb induces a net dipole moment perpendicular to the direction of field
\(\bold{Heya!}\)
Answer :-(b) comb induces a net dipole moment opposite to the direction of field.
Explanation :-When a comb rubbed with dry hair it's attracts pieces of piece of paper. This is because the comb that induces of the dipole net that of the moment thatopposite of the field. And, This happens the field dueing to charge of the comb induces of the dipole moment in the paper of the molecules in the dielectric.
Hopefully This Helps ! ~
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\(\underline{Answer :}\)
Jaceysan ~
Answer:
Option B
Explanation:
When a comb is rubbed with dry hair it induces some charge or its get charged either positive or negative
As paper remains in neutral hence it attracts the paper
Hence option B is correct
Gloria is designing an experiment to investigate how different kinds of wheels accelerate down a ramp. Which is the dependent variable? Type of Wheel
Acceleration of Wheel
Radius of Wheel
Steepnes of Ramp
In Gloria's experiment, the dependent variable refers to the variable that is being measured or observed and is expected to change in response to the independent variable. The independent variable is the variable that is deliberately manipulated or changed by the experimenter.
In this case, Gloria is investigating how different kinds of wheels accelerate down a ramp. The dependent variable in her experiment would be the "Acceleration of Wheel." This is because Gloria is interested in observing and measuring how the wheels accelerate, which is the outcome or result she wants to analyze.
The independent variable, on the other hand, would be the "Type of Wheel." Gloria is deliberately changing and manipulating the type of wheel used in her experiment to see how it affects the acceleration. By comparing the acceleration of different types of wheels, she can determine whether the type of wheel has an impact on the acceleration down the ramp.
The other variables mentioned, "Radius of Wheel" and "Steepness of Ramp," are not specifically mentioned in the question as potential variables that Gloria is investigating. Therefore, they are not relevant to determining the dependent variable in this particular experiment.
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use the result for the energy levels of the hydrogen atom to calculate the wavelengths of the first 5 lines of the balmer series. in what part of the electromagnetic spectrum do these lines fall?
The magnitude of the momentum of the 12,500-kg truck can be calculated using the formula:
Momentum = mass x velocity
So, Momentum = 12,500 kg x 16.5 m/s = 206,250 kg*m/s.
a. To find the speed of the 2250-kg SUV required to have the same momentum, we can use the same formula:
Momentum of SUV = mass of SUV x velocity of SUV
We know the momentum is the same, so we can set the two equations equal to each other:
12,500 kg x 16.5 m/s = 2250 kg x velocity of SUV
Solving for the velocity of SUV, we get:
Velocity of SUV = (12,500 kg x 16.5 m/s) / 2250 kg = 91.67 m/s
So, the SUV would need to be moving at a speed of 91.67 m/s to have the same momentum as the 12,500-kg truck.
b. To find the speed of the SUV required to have the same kinetic energy as the truck, we can use the formula:
Kinetic Energy = (1/2) x mass x velocity^2
We know the mass of the SUV and the kinetic energy is the same as the truck, so we can set the two equations equal to each other:
(1/2) x 12,500 kg x (16.5 m/s)^2 = (1/2) x 2250 kg x velocity^2
Solving for the velocity of SUV, we get:
Velocity of SUV = sqrt[(12,500 kg x (16.5 m/s)^2) / (2250 kg)] = 33.57 m/s
So, the SUV would need to be moving at a speed of 33.57 m/s to have the same kinetic energy as the 12,500-kg truck.
Friction was not used in the calculations, as it was not mentioned in the question.
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A bird flies 200 km in 4.5 hours. What is the birds average speed?
900 km/hr
0.0225 km/hr
44.44 km/hr
245 km/hr
James is planning a science fair project on sound waves. He places an alarm inside a jar which he can remove the
air from. Before he removes the air, he can hear the alarm ringing. After he removes the alr, he cannot hear the
alarm ringing. What condusion can you draw from this experiment?
A. Sound waves can travel in a vacuum
B. Sound waves are transverse waves and are loud
C. Sound waves cannot travel through a medium
D. Sound waves require a medium to travel through
Answer: c
Explanation:
Sound waves cannot travel through a medium
Ropes for rock climbing have a diameter of 10.5 mm and a Young's modulus of 8.72x107 N/m2. If a rock climber of mass 86.3 kg falls when there is 44.9 m of rope out, how far will the rope stretch
The rope will stretch 4.76 mm when the rock climber falls 44.9 m.
What is stretch?Stretch is a form of physical exercise that is designed to increase flexibility, range of motion and muscle endurance. It is usually done in a slow and controlled manner, with each movement being held for a short period of time. Stretching can help reduce joint and muscle pain, improve posture, reduce the risk of injury and improve overall performance. It can also be used to help reduce stress, improve circulation and reduce muscle tension. Regular stretching can be beneficial for both athletes and non-athletes alike, as it can help to improve range of motion, performance, and overall well-being.
The amount of stretch in the rope is determined by the formula:
Stretch = (mass x acceleration due to gravity x distance fallen) / (Young's modulus x cross sectional area of rope)
In this case, the calculation is as follows:
Stretch = (86.3 kg x 9.81 m/s² x 44.9 m) / (8.72x107 N/m² x 0.0077 m²)
Stretch = 4.76 mm
Therefore, the rope will stretch 4.76 mm when the rock climber falls 44.9 m.
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What would happen if the earth did not spin on its axis.
Vera and her three sisters received the same amount of money to go to the school festival. Each girl spent $12. Afterward, the girls had $24 altogether. determine the amount of money each girl recived
Answer:
$18
Explanation:
Each of the was qiven $18
All together =24
24 divide it by 4 (because there were 4 people there)
= 6 (6+6+6+6)
= 24
=6+12=18
.Hence each of them was given $18
Answer:
4(m−12)=24
4m-48=24
4m= 24+48
4m=72
m=18
Explanation:
it correct i did it on my school work and get an A+
2. The distance of a walker from the start of her walk is given below
at successive intervals of 1second.
Time/s
0
1
2 3
4 5 6
Distance/m
0
3 6 9
12 15 18
a. Sketch a distance-time graph of the following values.
b. How would you describe the speed at which she walks?
constant changing increasing accelerating.
c. Calculate her average speed.
The walker is walking at a uniform speed that is constant speed.
An object is considered to be moving with uniform speed when it covers the same distance in the same amount of time, as opposed to non-uniform speed when it covers different distances in the same amount of time. The distance-time graph has a steady slope. As a result, it demonstrates that the rate at which distance changes is constant. Thus, it depicts a constant speed. We refer to an object as travelling at a constant speed when its speed is constant and neither rises nor falls.
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Complete the light transformation diagrams in the given situations. Choose from the given words below. Answers may be repeated.
Here are the answers you can choose from:
chemical energy
electricity
heat energy
sound energy
kinetic energy
light energy
Here are the diagrams:
sunlight -------> solar panels -------> stereo playing
1. ____________ - 2. ____________ - 3. ____________
sunlight -------> land absorbs -------> changes in air temperature result in the movement of winds
4. ____________ - 5. ____________ - 6. ____________
sunlight -------> photosynthesis -------> horses can move after feeding on plants
7. ____________ - 8. ____________ - 9. ____________
sunlight -------> wearing a dark-colored shirt
10. ____________ - 11. ____________
sunlight -------> solar panel -------> cars operated via solar panel
12. ____________ - 13. ____________ - 14. ____________
1) Light energy ----> 2) Electricity ----- > 3)Sound energy
4) Light energy ------> 5) Heat energy ----> 6) Kinetic energy
7) Light energy ----> 8) Chemical energy -----> 9) Kinetic energy
10) Light energy -----> 11) Heat energy
12) Light energy ------> 13) Electrical energy -----> 14) Kinetic energy
What is energy transformation?We know that energy transformation has to do with the change of the energy from one form to the other. We have to note that from the first law of thermodynamics, it is clear that energy can not be created nor destroyed but it can be transformed from one form to the other.
Now, we have to note that in all the cases that we have below, there is the transformation of energy from one form to the other as shown above.
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Light passes from air (n=1) into another medium at 30.0 degrees to the normal. If the angle of refraction is 18.0 degrees, what is the index of refraction of the new medium?
The refractive index of the new medium is approximately 1.59.
Snell's law relates the angles of incidence and refraction of light passing through a boundary between two media with different refractive indices (n). The formula is:
n₁ sin θ₁ = n₂ sin θ₂
where n₁ is the refractive index of the first medium, θ₁ is the angle of incidence, n₂ is the refractive index of the second medium, and θ₂ is the angle of refraction.
In this problem, we know that the angle of incidence is 30.0 degrees and the angle of refraction is 18.0 degrees. We also know that the refractive index of air (n₁) is 1.00. Therefore, we can use Snell's law to solve for the refractive index of the new medium (n₂):
n₁ sin θ₁ = n₂ sin θ₂
1.00 sin 30.0° = n₂ sin 18.0°
n₂ = (1.00 sin 30.0°) / sin 18.0°
n₂ ≈ 1.59
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A battery of constant voltage is connected to a variable resistor. As the resistance of the resistor increases, what happens to the voltage? What happens to the current?
The electric current amount will vary according to the resistance value when connected to a voltage of a power supply. If resistance is reduced, current will increase. So, if the resistance is infinite (open circuit), the current could be considered zero, or infinitesimal small, if the resistance is zero (of infinitesimal small), the current will tend to be the maximum the power supply can provide. Here is the case of the power supply capability, input resistance, capacity to hold and regulate the output voltage to a certain maximum current, etc. Normally when you short circuit (zero ohms resi
I need help ASAP ANYONE
10% of more girls are likely to work than boys.
option A.
What is the percentage of the boys and girls that work?The percentage of girls who are more likely to work than boys are calculated as follows;
Total number of boys = 18 + 12 = 30
Number of boys who works = 18
Percentage = 18/30 x 100% = 60%
Total number of girls = 14 + 6 = 20
Number of girls who works = 14
Percentage = 14/20 x 100% = 70%
Difference = 70% - 60% = 10%
So 10% of more girls are likely to work than boys.
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a ball rolls off the edge of a table 1.44m above the floor and strikes the floor at a point 2m horizontally from the edge of the table. what is the time the ball was in the air?
Answer:
t = 0 1.697 seconds
Explanation:
Comment
This is a standard question where the time is the same for both the vertical distance the ball has to drop and the time it takes to go horizontally.
Formulas
dv = vi*t + 1/2 a t^2
dv is the vertical distance that the ball has to travel in a downward direction
vi is the initial vertical velocity. (which is zero.) t is the time it takes to hit the floora is the gravitational accelerationdh = vh * t
dh is the horizontal distancevh is the horizontal velocityt is the same time as the above formulaGivens
a = 9.81
dv = 1.44
vi = 0
t = ?
dh = 2 m
t = same as above (but not given)
Solution
dv = 1/2 a * t^2
1.44 = 1/2 * 9.81 *t^2 Multiply by 2
2*1.44 = 1/2 * 2 * t^2
2.88 = t^2
t = 1.697 seconds
Note that you do not have to use the horizontal information to get the time. You only have to realize that the ball has no vertical velocity to begin with.
Why is an object’s mass, rather than its weight, used to indicate the amount of matter it contains?.
The mass of an object indicate the amount of matter it contains, and the weight is a force that results from the action of gravity on the mass of the object.
When we are referring to the amount of matter that a body or an object contain we should use the magnitude of the mass and not the weight that is because the weight is a force.
What is weight?It is the physical magnitude that expresses the force exerted by gravity on the mass of a body, this is expressed in units of the international system in Newton.
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John has a utility function of the following: UL, C) = L ^BC ^(1-ẞ), where L is leisure and C is consumption. If he works, he receives a real wage w. Outside of the labor market, he has nonlabor market income V. And his endowment of time T is normalized to 1. And the price of goods p is also normalized to 1.
(a) Please write down his budget constraint.
(b) Assuming ẞ = 1/2, V = 100, w = 200, what is his optimal supply of labor?
(c) How much total income does he have?
(d) How much consumption will he make?
(e) Now, consider the case where John is subject to a 10% income tax on labor income only. What is his new optimal supply of labor?
(a) The budget constraint can be written as: C = wL + V, where C is consumption, w is the real wage, L is leisure, and V is non-labor market income.
(b) With ẞ = 1/2, V = 100, and w = 200, John's optimal supply of labor cannot be determined without information about his preferences for leisure and consumption. The utility function only represents his preferences, but we need additional information to determine the specific amount of labor he would choose to supply.
(c) John's total income is the sum of his labor income and non-labor market income: Total income = Labor income + Non-labor income = wL + V. Without knowing the specific value of L, we cannot calculate the total income.
(d) Similarly, without knowing John's preferences for leisure and consumption, we cannot determine the specific level of consumption he would choose.
(e) In the case where John is subject to a 10% income tax on labor income only, his new optimal supply of labor would depend on the tax rate's impact on his preferences and the trade-off between leisure and consumption. Without further information on his preferences and the specific tax structure, we cannot determine the new optimal supply of labor.
Additional information about John's preferences for leisure and consumption, as well as the specific tax structure, is necessary to calculate his optimal labor supply, total income, consumption, and the impact of the income tax on his labor supply.
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A car is skidding out of control on a horizontal icy
(frictionless) road. It has a mass of 2000 kg and it is headed directly at Lois Lane at a speed of 45.0 m/s. When the car is 200 m from her, Superman begins to exert a steady force on the car, F, relative to the horizontal with a mag-
nitude of 1.30 X 10^4N (he's a strong dude) at a down-
ward angle of 30°. Was Superman correct? Was this force enough to stop the car before hitting Lois?
The force of 1.30x10⁴ N (relative to the horizontal) applied by Superman on a car that has a mass of 2000 kg and that is skidding out of control on a horizontal icy road, at a speed of 45.0 m/s, is enough to stop the car before hitting Lois Lane which is 200 meters away.
To know if the applied force is enough to stop the car before hitting Lois, we need to find the distance after the force is exerted on the car, with the following equation:
\( v_{f}^{2} = v_{i}^{2} + 2ad \) (1)
Where:
\( v_{f}\): is the final velocity = 0 (when the car stops)
\( v_{i}\): is the initial velocity = 45.0 m/s
a: is the acceleration
d: is the distance =?
First, we need to find the acceleration. We can do it by adding the forces acting on the x-direction (with Newton's second law):
\( \Sigma F_{x} = ma \)
\( -Fcos(\theta) = ma \) (2)
Where:
F: is the force exerted by Superman = 1.30x10⁴ N
θ: is the downward angle = 30°
m: is the mass of the car = 2000 kg
Now, solving equation (2) for "a" we have:
\( a = -\frac{Fcos(\theta)}{m} = -\frac{1.30 \cdot 10^{4} N*cos(30)}{2000 kg} = -5.63 m/s^{2} \)
The minus sign is because the car starts to decelerate after Superman applies the force.
Then, the distance is (eq 1):
\(d = \frac{v_{f}^{2} - v_{i}^{2}}{2a} = \frac{0 - (45.0 m/s)^{2}}{-2*5.63 m/s^{2}} = 179.8 m\)
We can see that the car stops 20 meters away from Lois, therefore the force applied by Superman is enough.
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What value must the mechanical energy emec of the particle not exceed if the particle is to be trapped in the potential well at the left?.
To trap a particle in a potential well on the left, the mechanical energy (E_mec) of the particle should not exceed the height of the potential barrier on the right side of the well. This is because if the particle's energy is greater than the potential barrier, it can overcome the barrier and escape from the well.
So, the value that the mechanical energy (E_mec) must not exceed is the height of the potential barrier.
To determine the maximum value of mechanical energy that a particle can have and still be trapped in the potential well, we need to know the form of the potential energy function and its behavior at infinity.
To determine the maximum value of mechanical energy (Emax) that a particle can have and still be trapped in a potential well, we need to consider the energy conservation principle.
The total mechanical energy of the particle is given by the sum of its kinetic energy (K) and potential energy (U):
Emec = K + U
When the particle is trapped in the potential well, it is confined to a region where the potential energy is lower than the energy at infinity. Therefore, the potential energy U is negative and its absolute value increases as the particle moves away from the minimum of the potential well.
To be trapped in the well, the mechanical energy of the particle must be less than the potential energy at infinity. In other words, if the mechanical energy of the particle exceeds the potential energy at infinity, the particle will not be trapped and will escape from the well.
Thus, the maximum value of mechanical energy that the particle can have and still be trapped in the potential well is equal to the potential energy at infinity:
Emax = |U(∞)|
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For a pull box housing shielded conductors carrying over 1,000V and used in an angled pull, the distance between a conductor entry and exit must be________
Answer: For a pull box housing shielded conductors carrying over 1000V and used in an angled pull, the distance between a conductor entry and exit must be 36 times the outside diameter.
Explanation: To find the correct explanation to the question, we have to find more about the pull box housing shielded conductors.
What is pull box?Pull box is an underground electrical container, that made up of composite materials that used in traffic signal installation and also provide access to underground detectors as well as interconnected cables. These are used to simplify the wiring installation. What are the types of pull boxes?There we have two types of pull boxes, such as, one is for straight pulls and the other is for angle or U pulls.For straight pulls the length of the box shall not be less than 48 times the outside diameter of the cable.Angled pulls can be again classified as, Distance to opposite wall, Distance between entry and exit and removable sides.The distance between a conductor entry and exit from the box shall not be less than 36 times the outside diameter of the conductor.Thus, we can conclude that, for a pull box housing shielded conductors carrying over 1000V and used in an angled pull, the distance between a conductor entry and exit must be 36 times the outside diameter.
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PLEASE HELPPP
Force: Adding vectors (find resultant force)
50N north plus 50N west Plus 50N north west
If a 110 kg go-cart traveling at 13.41 m/s has a collision and experiences an impulse of 615 N for 1 s, what is its change in velocity?
Answer:
5.59 m/s
Explanation:
We are given;
Mass = 110 kg
Initial velocity: u = 13.41 m/s
Force = 615 N
Time(t) = 1 s
Now, formula for force is;
Force = mass x acceleration
Thus;
615 = 110 × acceleration
Acceleration(a) = 615/110 = 5.591 m/s²
Now, using Newton's first law of motion, we can find acceleration (a). Thus;
v = u + at
v = 13.41 + (5.591 × 1)
v ≈ 19 m/s
So, change in velocity is;
Final velocity(v) - Initial velocity(u) = 19 - 13.41 = 5.59 m/s
How much force is necessary to stretch a spring 0. 5 m when the spring constant is 190 N/m? N.
Statement:
A force is necessary to stretch a spring 0.5 m when the spring constant is 190 N/m.
To find out:
The force required to stretch the spring.
Solution:
Spring constant (k) = 190 N/m.Displacement (x) = 0.5 mLet the force necessary to stretch the spring be F.We know the formula of spring force, i.e., F = kx.Putting the values in the above formula, we getF = 190 N/m × 0.5 mor, F = 95 NSo, the force required to stretch the spring is 95 N.Answer:
95 N
Hope you could understand.
If you have any query, feel free to ask.
Suppose that the mirror is moved so that the tree is between the focus point F and the mirror. What happens to the image of the tree?
1. the image moves behind the curved mirror.
2.The image stays the same.
3.The image appears taller and on the same side of the mirror.
4. The image appears shorter and on the same side of the mirror.
When the mirror is moved so that the tree is between the focus point F and the mirror, the image appears shorter and on the same side of the mirror.This happens because of the phenomenon known as Reflection of Light. The mirror reflects light in such a way that it appears as if the light is coming from behind the mirror.
As a result, a virtual image is formed behind the mirror. This virtual image is similar in size and shape to the object being reflected.The characteristics of the image produced by a mirror depends on the location of the object relative to the mirror. There are two types of mirrors that we use to reflect light: Concave and Convex. In the case of a concave mirror, the image produced can either be real or virtual. When an object is placed between the focus point and the mirror, a virtual and erect image is produced. This image is smaller than the actual object and appears behind the mirror. The image is virtual because the light rays do not converge at the location of the image. In the case of a convex mirror, the image produced is always virtual, erect, and smaller than the actual object. As the object moves closer to the mirror, the image gets smaller. If the object is moved to a position where it is between the focus point and the mirror, the image produced will appear shorter and on the same side of the mirror.For such more question on Concave
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in this experiment you will be studying projectile motion. in general, what can be said about the horizontal velocity in this type of motion?
To known the motion and horizontal velocity.
What is motion?
In physics, motion changes over time depending on a body's position or orientation. Translation is the action of moving along a line or curve. Rotation is the term used to describe motion that modifies a body's orientation.
What is horizontal velocity?
The speed of a projectile is constant in the horizontal plane.Gravity causes a vertical acceleration that is 9.8 m/s/s downward. Each second, a projectile's vertical velocity changes by 9.8 m/s, A projectile's horizontal motion exists independently of its vertical motion.
If we perform an experimented see that the only force acting on the projectile is the gravity which acts vertically (neglecting air resistance). The component of gravitational force along horizontal direction is zero. Thus, there is no force acting horizontally acceleration in horizontal direction is zero.
Therefore, velocity in horizontal direction remains constant.
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I have an unknown volume of gas held at a temperature of 200 K in a container with a pressure of 60.0 atm. If by increasing the temperature to 325 K and decreasing the pressure to 20.0 atm causes the volume of the gas to be 29 liters, how many liters of gas did I start with?
a. 1.8 liters
b. 67.2 liters
c. 15.8 liters
d. 5.9 liters
If the volume of the gas is made to be 29 litres by raising the temperature to 325 K and lowering the pressure to 20.0 atm, then (d) 5.9 litres of gas are present initially.
What is the definition of temperature?Temperature is a measure of hotness and coolness on a variety of scales, including the Fahrenheit and Celsius systems. According to temperature, heat energy will naturally move from a hotter (body with a higher temperature) to a colder (body with a lower temperature) (one at a lower temperature). The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature.
What is the study of temperature?A branch of physics called thermodynamics investigates heat and temperature. The movement of energy all through the cosmos is governed by the principles of thermodynamics. They are researched in many branches of engineering and science, including chemistry, biology, and environmental science. Temperature can be expressed in Celsius (°C), Kelvin (K), Fahrenheit (°F), or Rankine units and describes the average energy of molecules inside a substance or system (R). It is a quantifiable physical characteristic of an object; a state variable.
The Ideal Gas Law can be used to find the gas's initial volume.
PV = nRT, where P is pressure, V is volume, n is number of moles of gas, R is ideal gas constant, and T is temperature in kelvins, is the formula for the Ideal Gas Law.
Initially:
P1 * V1
= n * R * T1
After change:
P2 * V2
= n * R * T2
We may put the two equations equal to one another and find the starting volume because the quantity of gas in a given mole does not vary.
P1 * V1 = P2 * V2
V1 = (P2 * V2) / P1
V1 = (20.0 atm * 29 L) / 60.0 atm
V1 = (20.0/60.0) * 29 L
V1 = (1/3) * 29 L
V1 = 9.67 L
Therefore, the gas's starting volume was 9.67 litres. The closest option is d. 5.9 litres, so that is the correct response.
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Liquid containers are made of a variety of materials, each with
its own unique characteristics. Give specific examples of materials
used for liquid containers that are 1) covalently bonded, 2) metal
b
Liquid containers are necessary to store liquids or other fluids, and are manufactured using various materials. These materials have unique properties and physical characteristics to meet the diverse requirements of different fluids and their storage conditions. Two of the materials used to make liquid containers are covalently bonded and metal.
1) Covalently bonded materials:Covalent bonds are strong bonds formed between atoms by sharing electrons. Covalently bonded materials are non-metallic materials that use a covalent bond between atoms to form the material. Examples of covalently bonded materials that can be used to manufacture liquid containers include:
- Polyethylene Terephthalate (PET): PET is a plastic material used to make water bottles and soft drink bottles. PET is lightweight and unbreakable, making it ideal for shipping and storing liquids.
- Polypropylene (PP): PP is a popular plastic material that is lightweight, durable, and resistant to chemical reactions. PP is used to make containers that store harsh chemicals and strong acids, as well as food containers, such as yogurt cups and margarine tubs.
In conclusion, there are many materials available that can be used to manufacture liquid containers, including covalently bonded materials and metals. The choice of material used depends on the type of liquid being stored and the storage conditions.
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a leaver raised 500N lode using 200N effort. if load distance and effort distance are 20 cm and 60 cm respectively, calculate mechanical advantage, velocity ratio and efficiency of this lever.
Answer:
Ans:
Explanation:
MA=L/E=500N/200N=5/2
VR=ED/LD=60cm/20cm=3
Thus, Efficiency=(Ma*100%)/VR=83.34%
The flux is unchanged becauYou hold a wire coil so that the plane of the coil is perpendicular to a magnetic field B⃗ .
a)If the magnitude of B⃗ increases while its direction remains unchanged, how will the magnetic flux through the coil change?
se the position of the coil with respect to B is unchanged l The flux increases because the magnitude of B increases The flux decreases because the magnitude of B increases The flux is unchanged because the surface area of the co is unchanged
The magnitude of b increases, which is the correct response, so the flux increases.
When does magnetic flux differ from magnetic field?In contrast to magnetic field, which is the region in space where the magnetic effect of the field is observed, magnetic flux is a measure of the amount of magnetic field passing through a given area. A moving charged particle creates a magnetic field that can exert a magnetic force.
ФB = BAcosθ
The magnetic flux is actually given by where B is the magnetic field's strength, A is the coil's circumference, and is the angle formed by the direction of B and the area A's perpendicular.
We can see that since B's intensity is increasing while its direction is staying the same in the problem, the magnetic flux is also increasing.
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All members of the Culper Ring received a copy of Tallmadge’s code.
All members of the Culper Ring received a copy of Tallmadge’s code, which added 500 words to the key in order to make it more secure. The Culper Ring was a secret spy ring that operated during the American Revolutionary War.
It was made up of a group of American spies who worked for General George Washington and were tasked with gathering intelligence on British troops and activities. The Ring's code was created by Benjamin Tallmadge, who was a colonel in the Continental Army and Washington's chief intelligence officer. His code was based on a book called "The New York Spelling Book," and it was designed to allow messages to be sent without being intercepted by the British. Tallmadge's code was eventually distributed to all members of the Culper Ring to make it more secure. The code contained approximately 700 words, including names, numbers, and common phrases. However, to further increase security, Tallmadge later added an. The Culper Ring's intelligence proved to be vital in several key battles of the Revolutionary War, including the Battle of Yorktown, which resulted in the surrender of British troops and effectively ended the war.
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Three resistors of 100, 40.0, and
10.0 Ohms are in series with a
24.0 V power supply. What is the
current in the circuit?
Answer:
0.16 A
Explanation:
V = IRtotal
24V = I(100 + 40 + 10)
I = 0.16 A
Answer: 0.16 is correct
Explanation: