a ball with an initial velocity of 10 m/s moves at an angle 60 degrees above the positive x-direction. the ball hits a vertical wall and bounces off so that it is moving 60 degrees above the negative x-direction with the same speed. in terms of m, the mass of the ball, what is the impulse delivered by the wall?
Answers
The impulse delivered by the wall when the ball hits is 10m kgm/s.
To find the impulse delivered by the wall, we need to first find the change in momentum of the ball during the collision with the wall. Since momentum is a vector quantity, we need to break it down into its x and y components.
The initial momentum of the ball:
\(p_i = m \times v_i\)
where m is the mass of the ball, and v_i is the initial velocity of the ball.
\(p_{i_x} = m \times v_i \times cos(60^\circ)\)
\(p_{i_y} = m \times v_i \times sin(60^\circ)\)
Substituting the given values, we get:
\(p_{i_x} = m \times 10 \ m/s \times cos(60^\circ) = 5m \ kg m/s\)
\(p_{i_y} = m \times 10 \ m/s \times sin(60^\circ) = 8.66m \ kg m/s\)
The final velocity of the ball is at an angle of 60 degrees above the negative x-direction. This means that the angle between the final velocity and the initial velocity is 120 degrees. We can use the law of reflection to determine the final x and y components of the velocity:
\(p_{f_x} = -p_{i_x}\)
\(p_{f_y} = p_{i_y}\)
So, the change in momentum of the ball is:
\(\Delta p_x = p_{f_x} - p_{i_x} = -2p_{i_x} = -10m \ kg m/s\)
\(\Delta p_y = p_{f_y} - p_{i_y} = 0\)
The impulse delivered by the wall is equal to the change in momentum of the ball:
\(J = \Delta p = \sqrt{(\Delta p_x^2 + \Delta p_y^2)} = 10m \ kg m/s\)
Therefore, the impulse delivered by the wall is 10 times the mass of the ball, in kg m/s.
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Related Questions
Maximum voltage produced in an AC generator completing 60 cycles in 30 sec is 250V. (a) What is period of armature? (b) How many cycles are completed in T/2 sec? (c) What is the maximum emf produced when the armature completes 180 0 rotation?
Answers
Answer:
a. 2 Hz b. 0.5 cycles c . 0 V
Explanation:
a. What is period of armature?
Since it takes the armature 30 seconds to complete 60 cycles, and frequency f = number of cycles/ time = 60 cycles/ 30 s = 2 cycles/ s = 2 Hz
b. How many cycles are completed in T/2 sec?
The period, T = 1/f = 1/2 Hz = 0.5 s.
So, it takes 0.5 s to complete 1 cycles. At t = T/2 = 0.5/2 = 0.25 s,
Since it takes 0.5 s to complete 1 cycle, then the number of cycles it completes in 0.25 s is 0.25/0.5 = 0.5 cycles.
c. What is the maximum emf produced when the armature completes 180° rotation?
Since the emf E = E₀sinθ and when θ = 180°, sinθ = sin180° = 0
E = E₀ × 0 = 0
E = 0
So, at 180° rotation, the maximum emf produced is 0 V.
Consider a particle bound in an infinite well, where the potential inside is not constant but a linearly varying
function. Suppose the particle is in a fairly high energy state, so that its wave function stretches across the entire well; that is, it isnât caught in the "low spot".
Decide how, if at all, its wavelength should vary. Then sketch a plausible wave function.
Answers
If the potential inside the infinite well is linearly varying, then the particle experiences a force that increases linearly as the particle moves from one end of the well to the other.
This means that the particle will have an acceleration that increases linearly and its velocity will increase linearly as well. As a result, the de Broglie wavelength, which is inversely proportional to the momentum, will decrease linearly across the well.
A plausible wave function for the particle in this situation would be a sine wave with decreasing wavelength across the well. The amplitude of the wave would decrease towards the edges of the well, reflecting the fact that the probability of finding the particle near the edges is lower due to the increasing potential energy there.
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The ecosystem with the greatest biodiversity is the one that has the greatest–
Group of answer choices
variety of living things.
average annual rainfall.
coverage of land area.
elevation above sea level.
Answers
Answer:
A) Variety of Living Things
Explanation:
Biodiversity is defined as the variety of life in the world or in a particular habitat or ecosystem.
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What type of adaptations involve chemical changes in body systems?
Answers
Answer:
Physiological adaptations are biochemical and metabolic changes in the cells of an organism, such as the development of poison in some plant species that protect the plant from environmental predators. Behavioral adaptations are adaptations in the behavior of an organism.
what can be used to describe electrical energy?
1.energy transferred through the movement of charges
2.kinetic energy of charged bodies in an electric field
3.potential energy stored in a battery
4.energy of light emitted by an electric bulb
energy transmitted by electric current
Answers
Electrical energy can be described as the energy transferred through the movement of charges, typically in the form of an electric current
define Electrical energy ?
Electrical energy is a form of energy that results from the movement of electric charges, typically in the form of an electric current. It is the energy that is transferred or converted from electric potential energy, which is the energy stored in a system due to the separation of charges. Electrical energy can be harnessed and used for various purposes, such as lighting, heating, powering electronic devices, and driving motors. It is an essential form of energy in modern society and plays a crucial role in many aspects of daily life.
The correct answer is 1. Electrical energy can be described as the energy transferred through the movement of charges, typically in the form of an electric current. Options 2, 3, and 4 refer to other forms of energy related to electricity but do not fully describe electrical energy itself.
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Mrs. Flores was driving in her car at 40 mph when she left work. This is an
example of
Velocity
O Acceleration
Speed
Direction
Answers
Speed, good luck. need to be 20 characters
What is the effect of increase in heat on:
1. Plastic
2. Iron
Answers
Explanation:
1.Plastic
Thermal Degradation – Plastic materials subjected to prolonged exposure to high temperatures will lose strength and toughness, becoming more prone to cracking, chipping, and breaking, at a rate in proportion to the temperature and time of exposure.
2.Iron
At room temperature, the iron atoms are in an unusual loosely packed open arrangement; as iron is heated past 912 degrees Celsius, the atoms become more closely packed before loosening again at 1,394 degrees Celsius and ultimately melting at 1,538 degrees Celsius
From a penalty kick, the ball rebounds off the goalkeeper back to the player who took the kick. That player then kicks the ball into the goal. What is the correct restart
Answers
The correct restart is for there to be another kick off taken in this type of scenario.
What is Kick-off in Soccer?This is a method of restarting play in which the ball is put on the center circle and passed by a player.
Kick offs occur at the beginning of any halves or when a goal is scored during the match which is why it's the most appropriate choice.
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Answer:Kick offs occur at the beginning of any halves or when a goal is scored during the match which is why it's the most appropriate choice.
Explanation:
An Olympic sprinter runs towards you while holding a green glow stick. Assuming you had sensitive enough equipment, the light from the glow stick will appear: Blueshifted Greenshifted As a blackbody O Redshifted
Answers
The light from the green glow stick held by the Olympic sprinter will appear redshifted.
The phenomenon of redshift occurs when the source of light is moving away from the observer. In this case, as the sprinter is running towards you, the distance between you and the glow stick is decreasing over time. This decrease in distance causes a Doppler shift in the frequency of the light emitted by the glow stick.
Since the light is redshifted, its wavelength increases and the frequency decreases compared to its original emitted frequency. As a result, the light that reaches your eyes appears more towards the red end of the visible spectrum.
It is important to note that the color of the glow stick itself remains the same, but due to the relative motion between the source (the sprinter) and the observer (you), the light undergoes a change in frequency and appears redshifted.
This phenomenon is similar to the redshift observed in cosmology, where the light from distant galaxies appears to be redshifted due to the expansion of the universe.
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Jeff was struggling with his agggressive behavior. Throughout high school he often found himself in fights. Five years after high school he became an Extreme Sports contender. He channeled his agression and is happily married with a calmer personality outside the ring.
Answers
Any action intended to hurt, harm, or cause suffering to another living thing or group of beings is considered to be aggressive.
What causes harm?Specifically, acts that injure someone physically. action that harms psychological health, such as that which instills apprehension, concern, or anguish.When you hurt your brother, you also hurt him. One way to damage someone is to hurt them physically.
Distress: What is it?People who are distressed could also believe that they are unable to handle or cope with alterations brought on by everyday activities or medical conditions like cancer. It is unfavourable, unhealthy, and discouraging. Stressors events that trigger the stress reaction in our bodies. A stressor is anything that creates stress.
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Calculate the energy released in the fusion reaction (2/1)H + (2/1)H ----> (3/2)He + (1/0)n . The atomic mass of (2/1)H (deuterium) is 2.014101 amu.
Answers
The energy released in the reaction as E = (5.817 x 10^-30 kg) x (3 x 10^8 m/s)^2 = 5.235 x 10^-13 J, or approximately 5.24 x 10^-10 J. To calculate the energy released in the fusion reaction (2/1)H + (2/1)H --> (3/2)He + (1/0)n, we first need to calculate the mass difference between the reactants and products. T
he atomic mass of (2/1)H is 2.014101 amu, and the atomic mass of (3/2)He is 3.016029 amu. The atomic mass of (1/0)n is 1.008665 amu.
The total mass of the reactants is (2 x 2.014101) = 4.028202 amu. The total mass of the products is (3.016029 + 1.008665) = 4.024694 amu.
The mass difference is 4.028202 - 4.024694 = 0.003508 amu. To convert this to energy, we use Einstein's famous equation, E=mc^2.
The speed of light, c, is approximately 3 x 10^8 m/s. Converting the mass difference to kilograms, we get 0.003508 x 1.66054 x 10^-27 kg/amu = 5.817 x 10^-30 kg.
Using these values, we can calculate the energy released in the reaction as E = (5.817 x 10^-30 kg) x (3 x 10^8 m/s)^2 = 5.235 x 10^-13 J, or approximately 5.24 x 10^-10 J.
In the fusion reaction, two deuterium nuclei ((2/1)H) combine to form a helium-3 nucleus ((3/2)He) and a neutron ((1/0)n).
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find the lateral area and surface area of a right rectangular prism with height of 7 inches, length 3 inches, and width 4 inches.
Answers
The lateral area of the prism is 98 square inches and the surface area is 122 square inches.
What is the lateral area and surface area?To find the lateral area and surface area of a right rectangular prism with height 7 inches, length 3 inches, and width 4 inches, we can use the following formulas:
Lateral area = 2h(l + w)
Surface area = 2lw + 2lh + 2wh
Plugging in the given values, we get:
Lateral area = 2(7)(3 + 4) = 2(7)(7) = 98 square inches
Surface area = 2(3)(4) + 2(3)(7) + 2(4)(7) = 24 + 42 + 56 = 122 square inches
Therefore, the lateral area of the prism is 98 square inches and the surface area is 122 square inches.
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HEY CAN YALL PLS HELP ME OUT IN DIS RQ I RLY NEED HELP!!!!!!!!!1
Answers
Answer:
The correct answer is 1.08 kg
Explanation:
From the data provided:
Weight (cup + water)= 2.58 kg
Weght (cup) = 1.50 kg
Thus, we simply calculate the difference between the full cup and the empty cup to obtain the net weight of water:
Weight (water) = Weight (cup + water) - Weght (cup)
= 2.58 kg - 1.50 kg
= 1.08 kg
Answer:
1 US cup of water (cup) = 0.52 pounds of water (lb wt.)
Explanation:
How do we increase power? Do we increase or decrease current (amperage)? Do we increase or decrease voltage
Answers
Answer:
Increase the power of a hypothesis test
Use a larger sample. ...
Improve your process. ...
Use a higher significance level (also called alpha or α). ...
Choose a larger value for Differences. ...
Use a directional hypothesis (also called the one-tailed hypothesis).
The two main ways of increasing the current in an electrical circuit are by increasing the voltage or by decreasing the resistance.
Which force is most important inside an atom?
O A. Gravity
O B. Air resistance
O C. Friction
O D. Strong nuclear force
Answers
Answer:
D- fuerza nuclear fuerte
Explanation:
which color of visible light would have the least energy? which would have the most energy? how do you know?
Answers
The color of visible light that would have the least energy is red. On the other hand, the color of visible light that would have the most energy is violet.
This is because red light has the longest wavelength and the lowest frequency out of all the colors in the visible spectrum. Violet light has the shortest wavelength and the highest frequency out of all the colors in the visible spectrum.
This relationship between wavelength, frequency, and energy can be explained by the relationship between electromagnetic waves and energy. All electromagnetic waves, including visible light, have a certain amount of energy that is proportional to their frequency. The higher the frequency, the more energy the wave has.
This relationship can also be seen in the electromagnetic spectrum, where higher energy waves (such as X-rays and gamma rays) have shorter wavelengths and higher frequencies, while lower energy waves (such as radio waves) have longer wavelengths and lower frequencies.
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what kind of material is associated with new technology
Answers
Answer:
Silicon was touted as the revolutionary material that can do wonders in the tech industry.
Explanation:
A 1650 kg car is going a street at 42 m/s east. What is the momentum of the car
Answers
Formula for momentum:
\(p=mv\)
momentum(measured in kg*m/s) = mass(measured in kg) * velocity(measured in m/s)
__________________________________________________________
Given:
\(m=1650kg\)
\(v=42m/s\)
\(p=?\)
__________________________________________________________
Finding momentum:
\(p=mv\)
\(p=1650\times42\)
__________________________________________________________
Answer:
\(\fbox{p = 69,300 kg*m/s}\)
How can you make a chemical change to paper
Answers
-- burn it (it combines with Oxygen and makes new substances)
-- chew it (it combines with your saliva and makes new substances)
-- swallow it (your stomach juices dissolve it and make new substances)
I think that's as far as I should go with it.
If a riding lawnmower engine exerts 19 hp in one minute to move the mower, how much work is done? (Hint convert: 1 watt equals 0.00135962 hp)
Answers
Answer:
Work done = 838470 Joules.
Explanation:
Given the following data;
Power = 19 hp
Time = 1 minute to seconds = 60 seconds.
Next, we would convert the unit of power in "hp" to "Watt."
1 Watt = 0.00135962 horsepower
x Watt = 19 horsepower
Cross-multiplying, we have;
19 = 0.00135962x
x = 19/0.00135962
x = 13974.5 Watts.
Now, to find the work done in moving the mower;
Work done = power * time
Substituting into the formula, we have;
Work done = 13974.5 * 60
Work done = 838470 Joules.
16. What will happen If a fast-moving car making a loud noise drives away
from a person?
O A. The frequency of the sound waves reaching the person's ear will be greater
than the frequency of the waves leaving the car.
OB. The pitch of the sound being heard by the person will appear to be lower
than the pitch of the source.
OC. The pitch of the sound being heard by the person will appear to be higher
than the pitch of the source.
O D. The pitch and frequency of the sound waves reaching the person's ear will
remain unchanged.
Answers
The frequency of the sound waves reaching the person's ear will be greater than the frequency of the waves leaving the car.
Thus, When an object's vibrations pass through a medium and hit the human eardrum, sound is created. According to physics, sound is created as a pressure wave.
When an object vibrates, the air molecules in its immediate vicinity also vibrate, starting a cascade of sound wave oscillations across the medium.
The physics definition acknowledges that sound exists irrespective of an individual's reception, in contrast to the physiological definition, which also takes into account how a subject perceives sound.
Thus, The frequency of the sound waves reaching the person's ear will be greater than the frequency of the waves leaving the car.
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The electron gun in a television tube uses a uniform electric field to accelerate electrons from rest to 4.5×107m/s in a distance of 1.2 cm.
What is the electric field strength?
Answers
Thus, the electric field strength is found to be approximately 3.83 × 10^6 N/C.
To find the electric field strength, we can use the equation for the work-energy principle:
ΔKE = q * E * d
Where ΔKE is the change in kinetic energy, q is the charge of an electron, E is the electric field strength, and d is the distance the electron travels.
First, find the change in kinetic energy:
ΔKE = 0.5 * m * v^2
where m is the mass of an electron (9.11 × 10^-31 kg) and v is the final velocity (4.5 × 10^7 m/s).
ΔKE = 0.5 * (9.11 × 10^-31 kg) * (4.5 × 10^7 m/s)^2 ≈ 9.22 × 10^-16 J
Next, we need the charge of an electron (q), which is -1.6 × 10^-19 C. The distance (d) is 1.2 cm, which needs to be converted to meters: d = 1.2 × 10^-2 m.
Now we can solve for the electric field strength (E):
E = ΔKE / (q * d)
E = (9.22 × 10^-16 J) / ((-1.6 × 10^-19 C) * (1.2 × 10^-2 m))
E ≈ 3.83 × 10^6 N/C
The electric field strength is approximately 3.83 × 10^6 N/C.
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They confessed their guilt.
Answers
Answer:
heyyy
May I Know the full question
An ice skater's mass is 5 Kg, she hits a wall with a force of 10 N. What was her acceleration?
Answers
Answer:
What was her acceleration and distance she moved during her ... Identify the following as a scalar or vector: the mass of an object, the number of leaves on a ... Once the chair is in motion, a 127 N horizontal force keeps it moving at a constant velocity. a. ... A 65 kg skater standing on frictionless ice throws a 0.15 kg snowball ...
Explanation:
Which equation shows the beta decay of a transuranium element?
Answers
239 239 0
Np → Pu + e
93 94 -1 is the equation shows the beta decay of a transuranium element.
What is a Transuranium element?These are elements whose atomic number is greater than that of uranium which is 92.
Neptunio has an atomic number of 93 which is why option D was chosen as the most appropriate choice.
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The earth is compressed to keep one third of radius .Calculate the acceleration of the new earth.(acceleration due to gravity of the earth before it is compressed is 9.8m/s^2.
Answers
Answer: read your text book
Explanation:
A 7.50 kg bowling ball moving6.42 m/s strikes a 1.60 kg bowlingpin at rest. After, the pin moves14.8 m/s at a -47.0° angle. Whatis the y-component of the ball'sfinal velocity?y-component (m/s)Enter
Answers
let the bowling ball initially is moving along the x-axis,
The whole process can be represented as,
Before the collision the net kinetic energy of the balls is,
\(K_{iy}=\frac{1}{2}\times m_1\times(v_1\cos (90^o))^2+\frac{1}{2}\times m_2\times(0)^2\)where the values of the variables are given as,
\(\begin{gathered} m_1=7.5\text{ kg} \\ v_1=6.42ms^{-1} \\ m_2=1.6\text{ kg} \end{gathered}\)As the value of cos(90) is zero.
Substituting the known values,
The value of the net kinetic energy with the velocity along the y-axis before the collision is,
\(K_{iy}=0\)The velocity of the second ball is at rest in the initial state, thus its value is taken as zero.
After the collision of the balls, the net kinetic energy is,
\(\begin{gathered} K_{fy}=\frac{1}{2}\times m_1\times(v^{\prime}_1\sin (\alpha))^2+\frac{1}{2}\times m_1\times(v^{\prime}_2\sin (-47^o))^2 \\ K_{fy}=\frac{1}{2}\times m_1\times(v_{1fy})^2+\frac{1}{2}\times m_1\times(v^{\prime}_2\sin (-47^o))^2 \end{gathered}\)Negative sign here indicating the direction of the final balls motion will be opposite to the each other.
The values of the variables are given as,
\(v^{\prime}_2=14.8ms^{-1}\)Substituting the known values,
The value final kinetic enegry of the balls with velocity along the y-axis is,
\(\begin{gathered} K_{fy}=\frac{1}{2}\times7.5\times(v_{1fy})^2+\frac{1}{2}\times1.6\times(14.8\times\sin (360^o-47^o)^2 \\ K_{fy}=3.75\times(v_{1fy})^2-93.72 \end{gathered}\)Here 360 degree is used because the pin ball direction is downward of the positive x-axis.
Then by the law of conservation of energy along the y-axis,
\(\begin{gathered} K_{iy}=K_{fy} \\ 0=3.75\times(v_{1fy})^2-93.72 \\ (v_{1fy})^2=\frac{93.72}{3.75} \\ (v_{1fy})^2=25 \\ v_{1fy}=5ms^{-1} \end{gathered}\)Thus, the y component of the final velocity of the bowling ball of mass m1 is 5 meter per second.
Many people love roller coasters. Some people call them scream machines. They agree that
riding a roller coaster is a thrilling experience. What you may not realize while you are going 60 miles an hour is that a roller coaster has no
engine. You are not being propelled around the track by a motor or pulled by anything. A roller coaster moves on its own. How do you think that
can happen?
Answers
Answer:
There is some sort of "rollers" on the trail part that is used to make the roller coaster move when it is going up. Then because of that, the speed gets quicker when it drops down, so then it could move for a longer time until it reaches the next arch.
Explanation:
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if the cost of electrical energy is $0.075 per kilowatt-hour, how much does it cost to operate the light for an hour?
Answers
$0.075 is the cost to operate the light for an hour.
As per the given information,
The cost of electrical energy = $0.075 per kilowatt-hour
Kilowatt-hours, or kWh, are the measure of electrical energy. They are calculated by multiplying the amount of power used (measured in kW) by the number of hours during which it is used. The total cost of energy is calculated by multiplying that figure by the price per kWh.
If we assume that the light uses 1 kilowatt-hour of electrical energy every hour of use, we can compute the cost of running the light for an hour as follows:
Cost = Energy used x Cost per kilowatt-hour
Cost = 1 kilowatt-hour x $0.075 per kilowatt-hour
Cost = $0.075
Therefore, it would cost $0.075 to operate the light for one hour. If the light consumes more or less than 1 kilowatt-hour per hour, then the cost would be proportionally higher or lower.
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how to calculate the coefficient of friction if you dont have a number
Answers
The coefficient of friction can only be calculated if you have a numerical value.
It is a dimensionless constant that expresses the relationship between two surfaces' frictional forces. As a result, it is a number that varies depending on the materials and surfaces involved.
To find the coefficient of friction, you must perform an experiment to measure the frictional force between two surfaces.
In this experiment, the force required to move a block or object over a horizontal surface must be measured. The formula for frictional force is as follows:
Ff = Fn * µ
Where:
Ff = frictional force,
Fn = normal force,
µ = coefficient of friction
Thus, we may rearrange the formula to find µ as follows:
µ = Ff/Fn
Where:
Ff = frictional force,
Fn = normal force
Therefore, we require numerical values for both the frictional force and the normal force to find the coefficient of friction (µ).
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