Energy = BTU x Mass x Temperature Change
We know that one BTU is the energy required to raise the temperature of one pound of water by one degree fahrenheit. We also know that the density of water is 1 gram/milliliter or approximately 8 pounds/gallon. Therefore, we can calculate the mass of one thousand gallons of water as follows:
Mass = Density x VolumeMass = 8 pounds/gallon x 1000 gallonsMass = 8000 poundsNow we can plug in the values into the formula and get the energy required to raise the temperature of one thousand gallons of water by 25 degrees F:
Energy = BTU x Mass x Temperature ChangeEnergy = 1 BTU/pound°F x 8000 pounds x 25°FEnergy = 200000 BTUAbout BTUBTU is a unit of energy used in the United States which means "British Thermal Unit" and is usually defined by an hour being the unit of BTU/hour or BTU/h. This unit is still commonly found in Great Britain or England in heating and air conditioning systems. But gradually this unit has changed to the energy unit from the SI unit, namely Joule (J).
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A cross-country skier moves 36 meters eastward, then 44
meters westward, and finally 22 meters eastward.
For this motion, what is the distance moved?
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Distance = 102
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number pad.
What is the magnitude and direction of the
displacement?
Magnitude =
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Answer:
a) 102 meters
b) 14 meters
c) The direction is eastward.
Explanation:
Distance is said to be the length between two points. It is a scalar quantity.
a) The distance moved = 36 + 44 + 22
= 102 meters
b) Displacement is the distance moved in a specified direction.
Representing the distance moved with specific direction as a directed number, 36 meters eastward = +36, 44 meters westward = -44, and 22 meters eastward = +22
/Displacement/ = +36 -44 +22
= +58-44
= 14
The magnitude of the displacement is 14 meters.
c) The direction is eastward.
So that the magnitude of displacement and his direction is 14 meters eastward.
A 40 kg girl is pushing a 40 kg boy in a 20 kg toy wagon. The wagon is moving at a constant speed of 2.0 m/s. Calculate the combined kinetic energy of the boyWhat is the acceleration of a 50 kg object pushed with a force of 500 newtons?
Answer:
Combined kinetic energy =120 joules
Acceleration= \(10 m/s^2\)
Explanation:
Given that the mass of the girl= 40 kg.
The mass of the boy= 40 kg.
The mass of the wagon = 20 kg.
The combined velocity of the boy and the wagon, v= 2.0 m/s.
The kinetic energy of any object having mass m and moving with the speed of v m/s, is
K.E.= \(\frac 1 2 mv^2\).
Here, the combined mass of the boy and the wagon = 40 + 20 = 60 kg.
So, the combined kinetic energy of the boy and the wagon
\(=\frac 12 60 \times 2^2= 120\) J
When a force is applied on the object having the mass m, then
F=ma,
where a is the acceleration produced in the object.
Here, F=500 newtons and m= 50 kg.
so, \(500=50\times a\)
\(\Rightarrow a = 500/50=10 m/s^2\).
Hence, the combined energy is 120 joules and the acceleration is 10 \(m/s^2\).
A copper penny has a mass of 3.0 g. A total of 4.0 × 10^12 electrons are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?
Then the separation between the two pennies will be O.354m.
To find the correct answer, we need to know about the electrostatic force of attraction.
What is the separation between the pennies?We have given with the information's,\(m=3*10^{-3}kg\\n=4*10^{12}\\\)
As we know that the charge of one electron is 1.6×10^-19C.Thus, the total charge on the penny will be,\(Q_1=4*10^{12}*1.6*10^{-19}=6.4*10^{-7}C.\\Q_2=-Q_1\)
We have the expression for electrostatic force of attraction as,\(F_e=\frac{kQ_1Q_2}{r^2} =mg\\\) , here given that the electrostatic force equal to the weight of the system.
We have to find the separation between the pennies.\(r=\sqrt{\frac{kQ_1Q_2}{mg} } =\sqrt{\frac{(6.4*10^{-7})^2}{4*3.14*8.85*10^{-12}*3*10^{-3}*9.8} }\\\\r=0.354m\)
Thus, we can conclude that the separation between the pennies is 0.354m.
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0.354m will be the separation between the two pennies.
We must understand the electrostatic force of attraction in order to arrive at the correct solution.
How far apart are the pennies from one another?One electron has a charge of 1.6 10-19 coulombs, as is common knowledge. Consequently, the total fee for the penny will be,\(Q_1=ne=4*10^{12}*1.67*10^{-19}=6.4*10^{-7}C\\Q_2=-Q_1\)
The expression of electrostatic force of attraction is as follows:\(F=\frac{kQ_1Q_2}{R^2}=mg\)
Given that the electrostatic force in this instance is equal to the system's weight.
We must determine the distance between the pennies.\(R=\sqrt{\frac{kQ_1Q_2}{mg} } =0.354m\)
As a result, we may say that the distance between the pennies is 0.354m.
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write an equation to help stacy find the gravitational force on an object if she knows the mass. in the equation let w represent gravitational force m represent mass and g represent the ratio you found in part s test your equation using a set of values from the table to be sure it works
The gravitational force on the object with a mass of 5 kg on the surface of the Earth is 49.05 N.
The equation that can help Stacy find the gravitational force on an object if she knows its mass is:
F = w = m x g
where:
F is the gravitational force (in Newtons, N)
m is the mass of the object (in kilograms, kg)
g is the acceleration due to gravity (in meters per second squared, \(m/s^2)\)
The value of g varies depending on the location of the object, but on the surface of the Earth, it is approximately 9.81 \(m/s^2.\)
To test the equation using a set of values from the table, let's say we have an object with a mass of 5 kg. Using the value of g on the surface of the Earth, we can calculate the gravitational force on the object as:
F = 5 kg x 9.81\(m/s^2\)
F = 49.05 N.
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Which value is equivalent to 178 centimeters?
A.
1.78 millimeters
B.
17.8 millimeters
C.
1.78 meters
D.
1.78 × 10-2 micrometers
E.
1.78 × 10-5 kilometers
Answer: The answer is C.
Explanation: 1 centimeter is equal to 0.01 of a meter and 178 centimeters times 0.01 is 1.78 meters, Hope that helps
What is the mass of a student who weighs 582 Newton?
cha
Answer:59.3
Explanation:
The force due to gravity or weight is 582 N. The mass of a student is 59.39 Kg.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Force = mass.acceleration
582 = m*9.8
m = 59.39 Kg.
The force due to gravity or weight is 582 N. The mass of a student is 59.39 Kg.
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priyadarshini means..........
Answer:
A submission from India says the name Priyadharshini means "Beloved and pleasing to look at" and is of Sanskrit origin. According to a user from India, the name Priyadharshini is of Indian (Sanskrit) origin and means "God gift".
how does current flowing through a resistor affect the temperature
A long-jumper leaves the ground at an angle of 20.0° above the horizontal and at a speed of 11.0 m/s.How far does he jump in the horizontal direction?(Assume his motion is equivalent to that of a particle.).
a. 12m
b. 7.94m
c. 10m
d. 0.384m
Answer:
The correct option is;
b. 7.94 m
Explanation:
The given parameters of the jump of the long jumper are;
The angle above the horizontal with which the long jumper leaves the ground, θ = 20.0°
The speed with which the long jumper leaves the ground, u = 11.0 m/s
The furthest horizontal distance the long jumper jumps, given that the motion is equivalent to that of a particle, is given by the formula for the range, R, of a projectile motion as follows;
\(R = \dfrac{u^2 \times sin \left (2 \cdot \theta \right )}{g}\)
Where;
g = The acceleration due to gravity ≈ 9.8 m/s²
u = The initial velocity of the long-jumper = 11.0 m/s
θ = The angle of the direction above the horizontal the long-jumper jumps = 20.0°
Plugging in the values, gives;
\(R = \dfrac{(11.0 \ m/s)^2 \times sin \left (2 \times 20.0 ^{\circ} \right )}{9.8} = \dfrac{121 \ m^2/s^2 \times sin \left (40.0 ^{\circ} \right )}{9.8 \ m/s^2} \approx 7.94 \ m\)
How far the long-jumper goes = The range, R, of the projectile motion ≈ 7.94 m.
The orbital velocity (v) depends on
mass (m), distance (r) and acceleration due to
granty (g) . obtain an
expression for orbital
velocity
9. In a __________ collision, 100% of both vehicles' speed is directed towards the point of impact. A. head-on B. rear-end C. side-impact
Answer: A
Explanation:
:)
How much work would it take to swing a 6kg sledgehammer over a distance of 2m if 100n of force is applied?
Answer:
200J
Explanation:
Given parameters:
Mass of sledgehammer = 6kg
Distance = 2m
Force applied = 100N
Unknown:
Work done = ?
Solution:
Workdone is the force applied to move a body through a certain distance;
Work done = Force x distance
Work done = 100 x 2 = 200J
Two forces p and Q acting perpendicular to each other have a resultant of 50N. Given that the sum of p and Q is 70N calculate the value of the forces p and Q
According to the given statement,
The sum of p and Q is 70N , the value of the forces p and Q is
25N
What is magnitude?"Distance or quantity" is how magnitude is simply defined. It shows how an object moves when it is in motion, whether that movement is absolute, relative, or of a certain size. It serves as a way to describe something's size or scope. Magnitude is a general term used in physics to describe size or distance.
In order to compare the speeds of a car and a bicycle, the magnitude can be used as an explanation. Additionally, it can be used to describe the length a particular object has travelled or the magnitude of an object's amount.
According to the given value,
The magnitude of Q= the horizontal component of the resultant force.
θ= 90°-30°= 60°
|Q|= 50cos 60°= 25N.
Hence, the sum of p and Q is 70N , the value of the forces p and Q is 25N.
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The Gulf Stream is an ocean current that runs from the southern tip of Florida up the eastern coast of the U.S. And ends in the North Atlantic. How would this Northern flowing stream affect the coast of Europe?
Answer:
The Northern flowing stream will affect the coast of Europe by making climate of Western Europe and Northern Europe to be warmer than other areas that are located around the same latitude and this is simply because of the North Atlantic Current
Explanation:
The Northern flowing stream will affect the coast of Europe because the North Atlantic current causes the Gulf stream to be split into two ( 2 ) and the Northern stream which is a warm stream crossing over to Northern Europe. The Gulf stream makes climate of Western Europe and Northern Europe to be warmer than other areas that are located around the same latitude and this is simply because of the North Atlantic Current
ASAP
List some actions industry leaders can take to directly address the causes of global warming.
Global warming is mainly caused by the greenhouse gases. If industries take actions to reduce the evolution of these gases, global warming can be decreased a lot. To reduce these gases they have to plan for proper waste management and gas testing steps.
What is global warming?Global warming is the geographical process of warming up of the earth's surface and as a result ecosystems will be disordered and snow hills are starting to met leading to rise in sea level.
The main cause of global warming is the greenhouse gas effect. Greenhouse gases are methane, carbon dioxide, oxides of nitrogen and sulfur. They will intensely absorb heat from the atmosphere and warm up the surface of earth.
Evolution of carbon dioxide from factories should minimized by proper strategies. Similarly catalytic reactions and alternative chemicals for carbon dioxide and oxides of sulfur and nitrogen can be used to minimize global warming.
Burning of plastics and fossil fuels have to be reduced and proper waste management have to be planned by the industries.
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calculator a cylinder has a radius it rolls down a hill with a linear acceleration. what is the angle of the hill
The approximate value for the angle of the hill when a cylinder has a radius r, it rolls down a hill with a linear acceleration a, is θ ≈ a/(g + μ).
Let's first define the variables and parameters we have in this problem:
r: radius of the cylinder
a: linear acceleration of the cylinder
θ: angle of the hill
When the cylinder rolls down the hill, there are two forces acting on it: the force of gravity (mg) and the force of friction (f). The force of gravity can be broken down into its components perpendicular (mgcosθ) and parallel (mgsinθ) to the surface of the hill.
The force of friction acts in the opposite direction of the cylinder's motion and is given by f = μN, where μ is the coefficient of friction and N is the normal force. The normal force is equal to the perpendicular component of the force of gravity, so N = mgcosθ.
The net force acting on the cylinder is given by F = mgsinθ - μmgcosθ = ma, where m is the mass of the cylinder. We can solve for θ to get:
sinθ - μcosθ = a/g
where g is the acceleration due to gravity. We can use a numerical method like Newton-Raphson to solve this equation for θ, or we can make some approximations to simplify the equation. If we assume that μ is small and sinθ ≈ θ (valid for small angles), we can rewrite the equation as:
θ ≈ a/(g + μ)
This gives us an approximate value for the angle of the hill. However, if we want a more precise answer, we can use the exact equation and plug in the values of r, a, and μ to solve for θ.
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assume the motions and currents mentioned are along the x axis and fields are in the y direction.
(a) Does an electric field exert a force on a stationary charged object?
Yes/No
(b) Does a magnetic field do so?
Yes/No
(c) Does an electric field exert a force on a moving charged object?
Yes/No
(d) Does a magnetic field do so?
Yes/No
(e) Does an electric field exert a force on a straight current-carrying wire?
Yes/No
(f) Does a magnetic field do so?
Yes/No
(g) Does an electric field exert a force on a beam of moving electrons?
Yes/No
(h) Does a magnetic field do so?
Yes/No
Electric field is a physical field occupied by a charged particle on another particle in its surrounding. It is denoted by E. It is an invisible field.
a) Yes, an object with charge q experiences force from an electric field of intensity E. This force still acts even when the item is stationary because, as we can see, it is independent of the speed of the object.
b) No, the magnetic force produced by an object with charge q and speed v is equal to the magnetic force produced by an object with charge q and speed v in a magnetic field of intensity of B.
c) The electric force is still very strong. Point (a) shows that the electric force is still present and unaffected by the charge's speed.
d) The magnetic force F is no longer zero because the object is now moving at a specific speed v.
e) The answer is that the electric field does exert a force on the charges moving along the wire because it does so constantly to a charge.
f) Because a magnetic field always exerts a force on a moving charge, the charges flowing through the wire are being affected by the magnetic field. This is because the current in the wire is made up of charges travelling at a constant v.
g) Since an electric field exerts force and electrons have an electric charge, this argument makes sense. As a result, an electric charge and, by extension, an electron beam are always under the influence of an electric field.
h) The magnetic force is constant since the speed of the electrons in the beam is constant (v). V is not equal to zero, hence the magnetic field is not zero either.
As a result, an object with charge q experiences a force from an electric field of intensity E. This force still acts even when the item is stationary because, as we can see, it is independent of the speed of the object.
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this si a 2 part question84) A shock absorber is designed to quickly damp out the oscillations that a car would otherwise make because it is suspended on springs. (a) Find the period of oscillation of a 1610-kg car that is suspended by springs that make an effective force constant of 5.75×104 N/m. (b) Find the damping constant b that will reduce the amplitude of oscillations of this car by a factor of 5.00 within a time equal to half the period of oscillation.
Given data
*The given mass of the car is m = 1610 kg
*The given effective force constant is k = 5.75 × 10^4 N/m
(a)
The formula for the period of oscillation of a 1610 kg car is given as
\(T=2\pi\sqrt[]{\frac{m}{k}}\)Substitute the known values in the above expression as
\(\begin{gathered} T=2\times3.14\times\sqrt[]{\frac{1610}{5.75\times10^4}} \\ =1.05\text{ s} \end{gathered}\)Hence, the time period of oscillation of a 1610 kg car is T = 1.05 s
(b)
As from the given data, the amplitude of the oscillation of the car decreases by a factor of 5.00. Then, the expression for the amplitude of the oscillation, and the damping constant (b) is calculated as
\(A=A_0e^{-\frac{bt}{2m}}\)Substitute the known values in the above expression as
\(\begin{gathered} \frac{A_0}{5.0}=A_0e^{-\frac{bt}{2m}} \\ bt=2m\ln (5.0)_{} \\ b(\frac{T}{2})=2m\ln (5.0) \\ b=\frac{4m\ln (5.0)}{T} \\ =\frac{4\times1610\times\ln (5.0)}{1.05} \\ =9871.2\text{ kg/s} \end{gathered}\)Hence, the damping constant is b = 9871.2 kg/s
In the figure above, according to Kepler's laws of planetary motion,a. A1 = A2b. Δt1 > Δt2c. if Δt1 = Δt2, then the orbit is circulard. if Δt1 = Δt2, then A1 = A2
I cannot provide a main answer without a specific question or topic. Please provide more context or a specific question.
Why will be according to Kepler's laws of planetary motion?The given options are related to Kepler's laws of planetary motion, which describe the motion of planets around the sun. Kepler's first law states that the planets move in elliptical orbits around the sun, with the sun at one of the foci of the ellipse.
Therefore, option (d) is correct, stating that if Δt1 = Δt2, then A1 = A2. This means that the areas swept out by the planet in equal time intervals are equal, regardless of their location in the elliptical orbit.
Option (a) is incorrect because A1 and A2 represent the areas swept out by the planet, and do not have a direct relationship with each other.
Option (b) is also incorrect because Δt1 and Δt2 represent the time intervals taken by the planet to sweep out the areas A1 and A2, respectively. These time intervals will depend on the position of the planet in its orbit, and not on the size of the areas.
Option (c) is also incorrect because a circular orbit is a special case of an elliptical orbit, where the two foci of the ellipse coincide. Therefore, the statement "if Δt1 = Δt2, then the orbit is circular" is not necessarily true.
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A given mass of gas has a pressure of 80N/m² at a temperature of 40°C. if the temperature is reduced to 27°C with the volume remaining constant, the new pressure is A. 46.ON/m² B. 75.ON/m² C. 80.0N/m² D. 85.0N/m²
Answer:
Correct Answer: Option B
Explanation:
Explanation
P1/T1 = P2/T2
80/(273+47) = P1/(273+27) = 75Nm-2
Answer: 75.0 Nm^-2
Explanation:
P1/T1 = P2/T2 80/(273+47) = P1/(273+27) = 75Nm-2
sleep and stress levels can be improved by what?
Answer:
A healthy diet, low in sugar, caffeine, and alcohol, can promote health and reduce stress.
Explanation:
A healthy diet, low in sugar, caffeine, and alcohol, can promote health and reduce stress. Get adequate sleep: A good night's sleep makes you able to tackle the day's stress more easily. When you are tired, you are less patient and more easily agitated, which can increase stress.
a cell containing cyanamide is least likely to carry on the process of what transport
Answer:
Active transport
A 9.0-kg bowling ball on a horizontal, frictionless surface experiences a net force of 6.0 n. what will be its acceleration?
This question involves the concepts of Newton's Second Law of Motion.
The acceleration of the bowling ball will be "0.67 m/s²".
Newton's Second Law of MotionAccording to Newton's Second Law of Motion, when an unbalanced force is applied on an object, it produces an acceleration in it, in the direction of the applied force. This acceleration is directly proportional to the force applied and inversely proportional to the mass of the object. Mathematically,
\(F=ma\\\\a=\frac{F}{m}\)
where,
a = acceleration = ?F = Magnitude of the applied force = 6 Nm = Mass of the ball = 9 kgTherefore,
\(a=\frac{6\ N}{9\ kg}\)
a = 0.67 m/s²
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Lithium sodium potassium rubidium cesium and francium are the same column. Why are these elements in the same column in the periodic table
The periodic table has the provided elements in the same column because they have the same amount of valence electrons.Why do elements belonging to the same group exhibit the same chemical behaviour.
Because they all have the same amount of valence electrons in their valence shells, the elements Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are arranged in the same column in the periodic table.
The number of electrons in an element's outermost shell determines its chemical characteristics. If two elements have the same number of valence electrons, they belong to the same group. As a result, every element in the same group on the current periodic table has the same chemical characteristics.
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A 3. 50 kg block is pulled along a moving conveyor belt at a constant speed of 0. 500 m/s relative to a stationary observer while the belt moves at a constant speed of 0. 200 m/s in the same direction. If the coefficient of kinetic friction is 0. 400, the magnitude of the mechanical energy dissipated, in J, caused by the force of friction on the block in 8. 00 s is
A 3.50 kg block is pulled along a moving conveyor belt at a constant speed of 0.500 m/s relative to a stationary observer while the belt moves at a constant speed of 0.200 m/s in the same direction. If the coefficient of kinetic friction is 0.400, the magnitude of the work, in J, done on the block by the force of friction in 8.00 s is 32.9 J.
When two surfaces move relative to each other, the friction between them converts kinetic energy into thermal energy (that is, work to heat). As demonstrated by the utilisation of friction caused by rubbing pieces of wood together to ignite a fire, this feature may have severe repercussions. When motion with friction occurs, such as when a viscous fluid is churned, kinetic energy is transformed to thermal energy. Another significant effect of many forms of friction is wear, which can lead to performance deterioration or component damage. The science of tribology includes friction.
Let's first find the velocity of the block with respect to belt is
v(b) = 0.5 m/s - 0.2 m/s = 0.3 m/s
Distance travelled by the block is,
d = v(b) × t = 0.3 m/s × 8 s = 2.4 m
the work done on the block by the force of friction in 8.00 s,
W = f(r)d = μmgd = 0.4 × 3.5 × 9.8 × 2.4 = 32.9 J
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"the majority of working teens are employed by restaurants, grocery stores, and department stores." what is the subject in this sentence? majority teens employed stores
The appropriate subject in this sentence is "the majority of working teens."
Remember that a sentence's subject is typically a noun. The word or phrase that denotes an object, identifies a person or location, etc. is known as the subject.
The predicate of the sentence is "Employed by restaurants, grocery stores, and department stores."
The predicate, which can describe an action or a state of being, frequently follows the subject.
The verb acts as the "are" between the subject and predicate. It links or connects the sentence's subject with a word that renames or describes it, making it a linking verb.
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Explain why there is a delay between the arrival of the sound transmitted through the steel pipe and the sound transmitted by the air in the pipe.
Answer: RATE ME AND MAKE ME BRAININESS AND THANK ME
Explanation:Sound waves are pressure waves that travel through Earth's crust, water bodies, and atmosphere. Natural sound frequencies specify the frequency attributes of sound waves that will efficiently induce vibration in a body (e.g., the tympanic membrane of the ear) or that naturally result from the vibration of that body.
Sound waves can potentiate or cancel in accord with the principle of superposition and whether they are in phase or out of phase with each other. Waves of all forms can undergo constructive or destructive interference. Sound waves also exhibit Doppler shifts—an apparent change in frequency due to relative motion between the source of sound emission and the receiving point. When sound waves move toward an observer the Doppler effect shifts observed frequencies higher. When sound waves move away from an observer the Doppler effect shifted observed frequencies lower. The Doppler effect is commonly and easily observed in the passage of planes, trains, and automobiles.
The speed of propagation of a sound wave is dependent upon the density of the medium of transmission. Weather conditions (e.g., temperature , pressure, humidity , etc.) and certain geophysical and topographical features (e.g., mountains or hills) can obstruct sound transmission. The alteration of sound waves by commonly encountered meteorological conditions is generally negligible except when the sound waves propagate over long distances or emanate from a high frequency source. In the extreme cases, atmospheric conditions can bend or alter sound wave transmission.
The speed of sound in steel is about 17 times as fast as it's speed in air.
Naturally, when a sound starts out at one end of a pipe, it reaches the other end thru the steel before it reaches the other end thru the air in the pipe.
The longer the pipe is, the longer will be the delay between the arrival of the two sounds at the other end.
Please explain the different ways offense can score and how many points each way is worth? Answer in complete sentences.
Answer:
what sport bruh
Explanation:
Answer:
in wat sport exactly
Explanation:
in eat sport
The function of the __________is to store and supply fuel to the cylinder chamber where it can be mixed with air, vaporized, and burned to produce energy.
Answer:
The function of the fuel system is to store and supply fuel to the cylinder chamber where it can be mixed with air, vaporized, and burned to produce energy.
hope it helps (^^)
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An iron atom (Fe) has 26 protons in it. If the atom has 20 electrons in it, explain what type of charge it has and how you can tell.
Answer:
The iron atom has a positive charge, making it a cation.
Explanation:
The atom has a nucleus, where the protons and neutrons, which are the subatomic particles with the highest mass, are located. Practically all the mass of the atom is concentrated in the nucleus.Protons have a positive electrical charge, while neutrons have no charge.
Electrons move around the nucleus with other negatively charged particles.
An iron atom (Fe) has 26 protons and 20 electrons in it. That is, there are 6 more protons than electrons. As mentioned, protons are positively charged. So the iron atom has a positive charge, making it a cation.