To calculate how long it takes for a pulse to cover a distance of 25cm, we can use the formula:
time = distance / speed
In this case, the distance is 25cm and the speed is 0.5m/s, so we can plug in these values:
time = 25cm / (0.5m/s)
To convert cm to m we divide the distance by 100.
time = 25 / 100 m / 0.5m/s
time = 0.25s
So it takes 0.25 seconds for the pulse to cover a distance of 25cm, when the speed of the pulse is 0.5m/s.
When a capacitor that operates at 1,000 volts or less is removed from an energized circuit, the charge on the capacitor shall be drained to ? or less within ?
When a capacitor that runs at 1,000 volts or less is disconnected from an active circuit, the charge must be reduced within a reasonable amount of time to a safe level or less.
What will happen if a capacitor is completely drained?The safe level of charge for a capacitor that operates at 1,000 volts or less is typically considered to be below 50 volts.The appropriate time frame for draining the charge on a capacitor depends on the specific application and the safety regulations that apply to it.The National Electric Code (NEC) in US and other international standards have different regulations for safe handling of capacitors and the time frame for discharging the capacitors.It is important to consult the appropriate safety regulations and guidelines for the specific application in order to determine the correct time frame for draining the charge on a capacitor.It's also important to use the right tools and equipment to discharge the capacitors safely, such as using a discharge wand, bleeder resistors and etc.To summarize, when a capacitor that operates at 1,000 volts or less is removed from an energized circuit, the charge on the capacitor shall be drained to a safe level (generally less than 50 Volts) within an appropriate time frame, in compliance with the safety regulations.To learn more about capacitor refer:
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What is Newton's 3rd law of motion explain it with two examples?.
"According to Newton's third law, there is an equal and opposite reaction to every action." For instance, a rocket goes upward after receiving reaction force from an ejecting jet, and a bullet fired from a pistol receives force from the gun that causes it to move forward. The bullet pushes the weapon rearward with an equivalent amount of force.
A body's forces of action and reaction are never equal. The explanation for this is because action and response always occur in pairs, are of equal size, and always point in the opposite direction.They cannot counteract one another since they act on distinct bodies.
The force that the first object applies to the second during an interaction between two objects is referred to as the action. The force applied by the second body to the first body is known as the response force. Action and reaction are therefore opposite and of equal magnitude.
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After landing on Mars, you drop a marker from the door of your landing module and observe that it takes 2.1 ss to fall to the ground. When you dropped the marker from the module door on Earth, it took 1.3 ss to hit the ground.What is the magnitude of the acceleration due to gravity near the surface of Mars?Express your answer with the appropriate units.
Answer:
Approximately [tex]3.43\; {\rm m\cdot s^{-2}}[/tex], assuming that air resistance is negligible in both occasions, and that [tex]g_{\text{earth}} = 9.81\; {\rm m\cdot s^{-2}}[/tex] near the surface of the Earth.
Explanation:
Let [tex]x[/tex] denote the displacement of the marker. Let [tex]a[/tex] denote the acceleration of the marker. Let [tex]t[/tex] denote the time it takes for the marker to reach the ground.
Under the assumptions, acceleration of the marker would be constant, and the SUVAT equations would apply. Rearrange the SUVAT equation [tex]x = (1/2)\, a\, t^{2}[/tex] to find acceleration [tex]a[/tex]:
[tex]\begin{aligned}a &= \frac{2\, x}{t^{2}}\end{aligned}[/tex].
Let [tex]a_{\text{Mars}}[/tex] and [tex]t_{\text{Mars}}[/tex] denote the acceleration and time taken on Mars. Similarly, let [tex]a_{\text{Earth}}[/tex] and [tex]t_{\text{Earth}}[/tex] denote the acceleration and time taken on Earth. It is implied that the Marker travelled the same distance (same displacement, [tex]x[/tex]) both on Earth and on Mars.
Using the SUVAT equation from above:
[tex]\begin{aligned}a_{\text{Mars}} &= \frac{2\, x}{{t_{\text{Mars}}}^{2}}\end{aligned}[/tex].
[tex]\begin{aligned}a_{\text{Earth}} &= \frac{2\, x}{{t_{\text{Earth}}}^{2}}\end{aligned}[/tex].
[tex]\begin{aligned}\frac{a_{\text{Mars}}}{a_{\text{Earth}}} &= \frac{\displaystyle \frac{2\, x}{{{t_{\text{Mars}}}^{2}}}}{\displaystyle \frac{2\, x}{{{t_{\text{Earth}}}^{2}}}} \end{aligned}[/tex].
[tex]\begin{aligned}\frac{a_{\text{Mars}}}{a_{\text{Earth}}} &= \left(\frac{{t_{\text{Earth}}}}{{t_{\text{Mars}}}}\right)^{2}\end{aligned}[/tex].
[tex]\begin{aligned}a_{\text{Mars}} &= \left(\frac{{t_{\text{Earth}}}}{{t_{\text{Mars}}}}\right)^{2}\, a_{\text{Earth}} \\ &= \left(\frac{1.3\; {\rm s}}{2.2\; {\rm s}}\right)^{2}\, (9.81\; {\rm m\cdot s^{-2}}) \\ &\approx 3.43\; {\rm m\cdot s^{-2}}\end{aligned}[/tex].
helpppp plss
Object A has a momentum of +20 kg m/s, and object B has a momentum of -6 kg m/s. The two objects collide. After the collision, object A has a momentum of -4 kg m/s. What is the momentum of object B after the collision?
The final momentum of the object B is obtained as 18 Kg m/s.
What is the momentum?We have to note that the momentum of the object would be the product of the mass and the velocity of of the object. The direction of the momentum is the direction of the velocity of the object.
Then we have that;
Momentum after collision = Momentum before collision and this would imply that;
20 + (-6) = (-4) + X
X = momentum of object B
X = 14 + 4
X = 18 Kg m/s
Hence, we have used the principle of the conservation of the linear momentum here.
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You are standing at rest at a bus stop. A bus moving at a constant speed of passes you. When the rear of the bus is 12. 0 m past you, you realize that it is your bus, so you start to run toward it with a constant acceleration of how far would you have to run before you catch up with the rear of the bus, and how fast must you be running then? would an average college student be physically able to accomplish this?.
An average college student should be able to accomplish this.This is because 24 meters is a relatively short distance and 2 meters/second is a slow running speed.
What is distance?Distance is a measure of the amount of space between two points or objects. It is a scalar quantity, meaning it has magnitude but not direction, and is typically measured in units such as kilometers, miles, or meters. Distance can be measured in terms of length, width, or height. Distance is an essential element of everyday life and is used to calculate the length of a journey, the speed of a vehicle, or the time it takes to get from one place to another.
The distance you would have to run before you catch up with the rear of the bus is 24 meters. The speed you must be running at when you catch up with the bus is 2 meters/second.
An average college student should be able to accomplish this. This is because 24 meters is a relatively short distance and 2 meters/second is a slow running speed. This can easily be achieved by an average college student.
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A car uses 15 Joules in 23 seconds. Find power.
Power= 0.6521739130434783 Watts
Power is the amount of energy transferred or converted per unit time. The unit of power is watt, that is equal to one joule per second. Power is a scalar quantity.
Power = work/time,
P = w/t,
w = 15 joules
t = 23 seconds
P = 15/23
= 0.6521739130434783 Watts
Work is measured in joules and Time is measured in seconds.
Therefore, power is 0.6521739130434783 Watts.
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A olid weigh 0. 04N in air and 0. 024N when immered in aliquid of denity 800kg/m3 what i the volume of olid (g10 m/2
Answer: Correct answer is 2 × 10^-6
What is Upthrust force ?
-- Upthrust force is simply any force that is causing something to be pushed upwards.
--Archimedes' principle is a law of physics fundamental to fluid mechanics.
-- When an object is put into water or another liquid, there are two forces acting on it -
-- its weight pulling it down and upthrust force pushing it up.
Here in this question we need to find the actual volume of body
-- Upthrust = weight fluid displacement .
Weight of body in air - 0.04N
Weight of body immersed in liquid - 0.024N
So according to above situation
0.040 - 0.024 = PVg
0.016 = 800 x V x 10
V = 2.0 x 10^-6 m3
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PLEASE HELP!!!! A 0.5 kg football is moving at a velocity of
20 ms where it hits a receiver's hands who stops the ball in 0.075 seconds. What force did the receiver put on the ball?
The force applied on the football by the receiver is 80 N.
How to calculate force for football with moving velocity pf 20 ms?To calculate the force that the receiver put on the ball, we can use the equation:force = mass x accelerationwhere mass is the mass of the ball (0.5 kg) First, we need to calculate the change in velocity (delta v) by subtracting the final velocity (0 m/s) from the initial velocity (20 m/s):delta v = 20 m/s - 0 m/s = 20 m/sNext, we need to calculate the time it took for the receiver to stop the ball (t) : 0.075 secFinally, we can use the equation:force = mass x acceleration = 0.5 kg x (delta v / t) = 0.5 kg x (20 m/s / 0.075 sec) = 80 NSo the force put on the ball by the receiver is 80 N.
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In studying motion, you need to account for how ______changes As____Passes
In studying motion, you need to account for how position changes changes as time passes.
The position of an object is usually described in terms of its distance from a reference point, and motion is the change in position over time. To study motion, you need to observe how an object's position changes as time passes, and use this information to describe and explain the motion. This is done by using different quantities such as distance, displacement, speed, velocity and acceleration, which allow to quantify and analyze the motion.
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Why is a mole 6. 022 x10 23?.
The mole value stated, 6.022 x 10^23, is known as Avagadro's number for the scientist who determined how many atoms there are in 12 grams of carbon.
Why use 12 grams: Theoretical atomic mass of the carbon-12 isotope is given here (6 protons and 6 neutrons). The name is completely unrelated to the animal. Wilhelm Ostwald, a German chemist, is typically credited with coining the term. The Latin term moles, which meaning "a mass," is ultimately where the word mole originates, not from German.
A mole is a crucial unit of measurement used by chemists. Similar to how having a dozen eggs says you have twelve eggs, having a mole of something indicates that you have 602,214,076,000,000,000,000,000 of that particular thing. Chemists are required to measure in moles.
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Correct Question:
Why is a mole 6.022 x 10^23?.
0 7. 7
Give one concluion that can be made about the relationhip between the length of a
kayak and the eae of turning. [1 mark]
Give two concluion that can be made about the relationhip between the hape of
the kayak and it tability
Using the paddle to grasp the water and then moving the pressure from the blade through your body and into your kayak is called transferring power.
How does length affect kayak?Shorter hulls turn more rapidly, whereas longer boats have more storage space for overnight touring equipment and cruise more effectively. The difference in length of a few inches won't be obvious, but two feet or more will be apparent. Depth: Long-legged kayakers have more space thanks to deeper hulls, which also provide a little extra storage.Since both of these muscle groups need to be actively moving during paddling, kayakers must have strong shoulders and arms.Canoeing is sometimes referred to as kayaking, with the kayak being the name of the boat used. Crossing a stream of water is the main goal of canoeing.To learn more about kayak refer to:
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a small bullet is fired into a large piece of wood. after the bullet penetrates the wood, the assembly moves as one unit along a low-friction track in the direction of travel of the bullet.
1) After the bullet is stuck in the piece of wood, is the momentum of the wood (not including the bullet; assuming the piece of wood was initially at rest) greater than, equal to, or less than the initial momentum of the bullet?
Choose from:
a)The momentum of the wood is greater than the initial momentum of the bullet
b) The momentum of the wood is greater than the initial momentum of the bullet.
c)The momentum of the wood is less than the initial momentum of the bullet
Following the bullet's passage through the wood, the entire assembly moves in the same direction as the bullet along a low-friction track gravitation
What does a bullet's kinetic energy consist of?The kinetic energy a bullet has when it leaves a gun's muzzle is known as muzzle energy. Muzzle power is used as a crude indicator of the destructive power of a certain rifle or cartridge, ignoring elements like aerodynamics or gravitation for the purposes of comparison.
What is the term for when a bullet returns?The term "ricochet" (/rke/ RIK-shay; French: [ik]) refers to a rebounding, bounce, or skip from a surface, especially in the situation of.
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What is the formula of electric torque?.
Torque on an electric dipole is given by the formula, τ = q d e sinθ, where, τ is torque, q is charge, electric field strength e, angle between dipole and electric field.
When we consider a dipole that is placed in a uniform electric field e, to calculate the torque experienced by the dipole when placed in an external field with the axis of the dipole is at an angle to the electric field.
F = ± q e
The elements of the dipole-perpendicular force, F = ± q e sin θ
We know, τ = r × F = (q e sin θ) d = q d e sin θ
The dipole rotates when it is exposed to a consistent external electric field. Furthermore, the sum of the force and its arm determines its magnitude. The distance between the site of application of force and the point of rotation of the dipole is known as the arm.
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if the rms value is 125 volts, what is the peak value?
if the RMS value is 125 volts, the peak value is 177.7 volts.
The peak value of an alternating current (AC) signal can be calculated from its root mean square (RMS) value.
In this case, if the RMS value is 125 volts, the peak value can be determined by multiplying the RMS value by the square root of 2.
This results in a peak value of approximately 177.7 volts.
The calculation can be seen as follows:
Peak Value = RMS Value x Square Root of 2
Peak Value = 125 x √2
Peak Value = 177.7 volts
The peak value is important in electrical engineering as it is used to determine the maximum voltage in an AC signal, allowing engineers to better understand the power requirements of a given circuit.
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What are 5 kinetic and potential energy examples?.
Following are some examples of both kinetic energy and potential energy:
Kinetic energy:
The movement of stars in the galaxyConstantly moving water in oceans and rivers A person walkingA charged particle in an electric field A crumb falling from a tablePotential energy:
A rock placed on the edge of a cliffA roller coasterA kid at the top of a slideA yoyo before it is releasedA raised weightPotential energy is the type of energy that is stationary, where stored energy is realesed; while kinetic energy is the type of energy that possesses in objected during their motion, where energy for movement is used actively.
Every moving object and particle involves kinetic energy. An object and particle at rest have zero kinetic energy. Because kinetic energy reflects the form of energy which is exhibited by the objects when they are in motion. On the other hand, the potential energy of an object is signified in its position, not its motion. It refers to the energy of position.
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What force depends on mass and gravity?.
Gravitational force depends on mass and gravity.
Gravity has a force called gravitational force which is the force that pulls an object toward the earth. example, A leaf or fruit falls from a tree to the ground, river water flows down a river, or a ball is thrown up and lifted up and returned to the ground, to name a few examples of motion due to gravity. It is the force that exists between all objects in the universe. Two non-zero mass objects or particles are attracted to each other by gravity. Gravity acts on objects of all sizes, from elementary particles to clusters of galaxies.
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A cientit deign an experiment to meaure the impact force of a falling object to the ladder to a different rung and drop a ball on the cale and climb to a higher rung to continue the experiment
The experiment can be used to measure the impact force of a falling object to the ladder to a different rung. By dropping the ball from different rungs and measuring the impact force.
What is the experiment ?The goal is to create original content that is free from any form of plagiarism. The words should be written in a way that expresses the writer's unique perspective or opinion on the topic. The challenge is to come up with one hundred original words that accurately convey the writer's thoughts and feelings.
1. Set up a ladder with different rungs at different heights.
2. Put a ball at the base of the ladder.
3. Measure the exact height of each rung.
4. Drop the ball from each rung and measure the impact force by using a force meter.
5. Record the impact force for each rung and compare the results.
6. Repeat the experiment multiple times to ensure accuracy.
The experiment can be used to measure the impact force of a falling object to the ladder to a different rung. By dropping the ball from different rungs and measuring the impact force, we will be able to determine how the impact force changes when the object is dropped from a higher rung. This experiment will help us understand the relationship between the height of the rung and the impact force.
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What is the difference between g and g Class 9?.
a stone is thrown straight downward with a speed of 20 m/s from the top of a tall building. if the stone strikes the ground 3.0 s later, about how tall is the building? assume air resistance is negligible.
According to the problem the building is approximately 59 meters tall.
What is building?Building is the process of constructing a structure from individual components. It involves the planning, design, and construction of a structure with the use of materials such as wood, metal, concrete, and other materials. Building involves working with architects to ensure that the design meets all local building codes and regulations. Once approved, the project is ready to begin.
The height of the building can be calculated using the equation:
h = vt + 1/2gt²
where h is height of the building, v is initial velocity, t is time, and g is acceleration due to gravity.
In this case, v = 20 m/s, t = 3.0 s, and g = 9.8 m/s².
Plugging these values into the equation gives us:
h = 20(3) + 1/2 (9.8)(3)² = 59 m
Therefore, the building is approximately 59 meters tall.
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Select the correct answer. What happens to the sum of the ball’s kinetic energy and potential energy as the ball rolls from point A to point E? Assume there’s no friction between the ball and the ground. An image shows a curve that starts at point A, decreases at B, then increases at C and D, and ends at E. A. The sum decreases. B. The sum increases. C. The sum remains the same. D. The sum always equals zero.
The thing that happens to the sum of the ball’s kinetic energy and potential energy as the ball rolls from point A to point E is option C. The sum remains the same.
What is the kinetic energy about?The total mechanical energy of an object is the sum of its kinetic energy (energy of motion) and its potential energy (energy of position or stored energy). According to the law of conservation of energy, the total mechanical energy of an object remains constant in an isolated system, as long as no external forces (like friction, air resistance) are acting on it.
The image attached is a curved path, and the ball is rolling from point A to point E. As the ball moves down the incline, it gains kinetic energy, and potential energy is lost, but the total energy remains constant.
When it reaches point B, it has the maximum kinetic energy and minimum potential energy, and as it continues on the path, its potential energy increases, and kinetic energy decreases. At point E, it has the minimum kinetic energy and maximum potential energy. However, the total energy remains the same.
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the tension force in a cable can be resolved into a horizontal component and a vertical component.
the tension of the cable is 2000N
the cable makes an angle of 20 degrees with the horizontal.
draw a vector diagram to determine the magnitude of the two components of the tension force in the cable.
The two components of the force are;
Vertical component = 684 N
Horizontal component = 1879 N
How do we resolve the tension force?We have to note that the tension force that is know to act along a string. We have to note that the tension force just like all the other forces that we have must have direction. The direction of the force can also be resolved into the vertical and the horizontal components of the force.
Now we know that;
Vertical components of the force = 2000 N sin 20 = 684 N
Horizontal component of the force = 2000 N cos 20 = 1879 N
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Calculate the standard uncertainty for the Young's modulus,
in units kN/m2
To calculate the standard uncertainty of the Young's modulus, in units kN/m2, you need to use the formula for the standard deviation of a sample, which is the square root of the variance.
The variance is calculated by taking the sum of the squared differences between each value and the mean, and then dividing by the number of values in the sample. Therefore, you need to first calculate the mean value of the Young's modulus, and then use the formula to calculate the standard deviation. Once you have the standard deviation, you can multiply it by the appropriate conversion factor to get the standard uncertainty in units kN/m2.
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What is Newton's 3rd law of motion give 2 examples?.
Newton's 3rd law states that for every action there will always be an equal and opposite reaction. 2 examples of newton's 3rd law are a) launching of a rocket, b) firing a bullet from the gun.
Newton's 3rd law states that for every action there will always be an equal reaction in the opposite direction. When a rocket is launched from the earth, it applies a force on the ground that generate the enough reaction force that causes the rocket to generate orbital velocity.
On the other hand, when a bullet is fired from a gun it applies a force on the gun, which generate a recoil velocity in the gun. The gun also applies equal reaction to the bullet. As the bullet mass is very less as compared to the gun, so the velocity generated in the bullet will be much higher than the recoil velocity.
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How was it possible for the bike and the semi-truck to have the same
momentum?
Answers/
1-One had more mass and greater velocity
2-The situation is not possible
3-One had less mass but greater velocity
4-One had less mass and less velocity
momentum depends on mass (m) and velocity (v) of object
momentum (p) = m × v
we can get the same value of momentum (m) by different pair values of m and v, for example if a truch has more mass and less velocity and the bike has less mass but more velocity then there must be a case when their momentum is same.
correct answer
3-) One had less mass but greater velocity
What are Newton's 1st 2nd 3rd and 4th laws of motion?.
Newton's 1st, 2nd, 3rd, and 4th laws are 1) Law of inertia 2) Force's law 3) action-reaction relationship and 4) Newton's law of gravitation.
Newton's 1st law also known as the law of inertia. A balling rolling on the ground stops after some time due to the opposite force of friction working between the ball and the ground.
Newton's 2nd law of force states that the rate of change of momentum of an object is equal to the force applied by the object. When a bullet is fired from a gun change in the momentum of the bullet generate the force that cause the bullet to be fired and to generate the recoil velocity in the gun.
Newton's 3rd law states the action-reaction relationship. When a rocket is launched from the earth, it applies a force on the ground that generate the enough reaction force that causes the rocket to generate orbital velocity.
Newton's 4th law of gravitation states that every object attracts every other object in the universe with a force, called gravitational force. This force is directly proportional to the product of the masses of both the object and inversely proportional to the square of the distance between them. Mathematically it is described as:
F = GmM/R²
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A rock of ma m = 0. 52 kg i attached to a male tring of length L = 0. 79 m. The rock i wung in a vertical circle fater and fater up to a peed of v = 4. 8 m/, at which time the tring break. Thi occur when the tring i horizontal a hown in the figure A. What i the magnitude of the tenion, in newton, at which the tring break? and B. How high, in meter, doe the rock travel? Ue a value of h = 0 at the location of the break
A rock of ma m = 0. 52 kg i attached to a male string of length L = 0. 79 m, the magnitude of the tension at which the string breaks is 1576.2 N. The rock travels 227.3 m high after the string breaks.
a) To determine the magnitude of the tension at which the string breaks:
L = 0.79 m
v = 4.8 m/s
= 480 cm/s.
= 79 cm.
So,
F = (0.52 kg)(480 cm/s)²/(79 cm)
= 1576.2 N
b) To determine how high the rock travels after the string breaks, we need to use the conservation of energy principle:
KE = (1/2)(0.52 kg)(480 cm/s)²
= 117,964.8 J
KE = (1/2)mv²
= (1/2)T(L)
= (1/2)(1576.2 N)(79 cm)
= 62,360.1 J.
KE = PE
117,964.8 J = (0.52 kg)(9.81 m/s²)h
h = 227.3 m
Thus, the rock travels 227.3 m high after the string breaks.
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Calculate the answer to the correct
number of significant digits.
15.3 + 1.285
What is the SI unit of momentum Mcq?.
The SI unit of momentum is kilogram meters per second (kg*m/s).
This unit of measurement is used to express the momentum of an object in the International System of Units (SI). The kilogram is the base unit of mass in the SI and the meter per second (m/s) is the base unit of velocity in the SI. When we multiply the two, we get the unit of momentum. It is a vector quantity having both magnitude and direction. Momentum is an important concept in physics and it is used to describe the motion of objects, from subatomic particles to galaxies. The principle of conservation of momentum is widely used in physics, particularly in fields such as mechanics, thermodynamics, and quantum mechanics.
Momentum is a measure of an object's motion. Momentum is the product of an object's mass and velocity, and is represented by the symbol "p." In physics, momentum is considered to be a vector quantity, meaning it has both magnitude and direction.
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Find the sum of the measures of the interior angles of a convex 20-gon?
Answer:
The sum of the exterior angles must always be 360 deg.
Consider an equilateral triangle 3 * 120 = 360
For a square 4 * 90 = 360
For a pentagon 5 * 72 = 360
So for a 20-gon each interior angle = 180 - 18 = 162 with an exterior angle of 18
One must rotate 18 * 20 to get the full 360 deg so the side is back where it started
Since each interior angle = 162 deg one has
20 * 162 = 3240 deg for the sum of the interior angles
PLS HELP RN
A ball is thrown horizontally at 7.7 m/s from the top of a hill 59.6 m high. How far from the
base of the cliff does the ball hit the ground?
h = v 0 y 2 2 g ,This equation, which only depends on the vertical component of the initial velocity, specifies the maximum height of a projectile above its launch site.
How do you calculate a ball's maximum height when you throw it up with height?Calculate the ball's greatest height using the vertical motion model, h = -16t2 + vt + s, where v is the initial velocity in feet/second and s is the height in feet.
The maximum range is 45; why?We can see that for the longest-range punts 2 = 90 degrees and, consequently, = 45 degrees because the sine function has an input angle of 90 degrees that results in its highest output value, 1. In other terms, a projectile moves the farthest.
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