12,762 Answered Questions for the topic physics

Physics Math

10/22/22

Physics (Helps pls)
A flower pot falls from a ledge of a window building. the ledge is 80m high. How long will it take the pot to hit the ground?
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Physics

10/21/22

How far from the starting point is the hiker after these four legs of the hike? All angles are measured in a counter-clockwise direction from the positive x-axis. Answer in units of km
A hiker makes four straight-line walks A 12 km at 86 ◦ B 23 km at 222 ◦ C 17 km at 172 ◦ D 31 km at 122 ◦ in random directions and lengths starting at position (41 km, 41 km),
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Physics

10/21/22

A girl delivering newspapers travels 3 blocks west, 6 blocks north, then 5 blocks east. What is the magnitude of her resultant displacement? .
Find the direction (measured from due east, with counterclockwise positive) of her displacement. What is the total distance she travels? Answer in units of blocks
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Physics Calculus

10/21/22

Find t when the instantaneous acceleration is zero given S = t 3 − 4t 2 + 2t − 6.
Find t when the instantaneous acceleration is zero given S = t3 − 4t2 + 2t − 6.
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Physics

10/21/22

Kinematics in One Dimension ( Free Fall)
A ball is dropped from a height of 60ft above ground. Find the time it takes to hit the ground.Should I first convert 60ft. to meters? or just directly substitute it on the equation.
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Physics Calculus

10/21/22

A point moves along a path with an equation S = 36t − 1/3 t^3 + 24 where S is in meters and t is in seconds. Find the acceleration of the point when t = 1.
S = 36t − 1/3 t^3 + 24t = 1
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Physics

10/20/22

a computer is accelerated out a window at 8m/s/s. how much force was need for this acceleration?
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Physics

10/20/22

Physics elastic potential energy question

A spring-loaded toy uses a compressed spring to fire a marble out of a tube. A force of 220 Ncompresses the spring by 0.14 m. Calculate the elastic potential energy of the toy.
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Physics

10/20/22

Physic(s) Work Force of Particle
A particle moves in a straight line, parallel to the x axis, from xi to xf. It is acted upon by a force that is also parallel to the x axis and is given by f(x)= b/xA.Write an expression for the... more
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Physics Math

10/19/22

Physics (Vectors)

Solve the given problem using the parallelogram method and with the aid of protractor and ruler. Find the resultant of P = 6 km, 30 N of E and Q = 10 km, 50 NW.
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Physics

10/19/22

Please help me!
How long will it take a 1750 W motor to lift a 305 kg piano to a sixth-story window 16.0 m above the ground?
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Physics

10/19/22

Please help me!
A satellite of mass, mS, is in a circular orbit of radius, rS, around the Earth, determine its kinetic energy, K. Express your answer in terms of some or all of the variables mS, rS, and constants... more
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Physics

10/19/22

Please help me!
A vertical spring (ignore its mass), whose spring constant is 880 N/m, is attached to a table and is compressed down by 0.150 m. a) What upward speed can it give to a 0.340 kg ball when released?b)... more
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Physics

10/19/22

Please help me!
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order... more
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Physics

10/19/22

Please help me!
A novice skier, starting from rest, slides down a frictionless 13.0oincline whose vertical height is 150 m.  How fast is she going when she reaches the bottom?
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Physics

10/19/22

Please help me!
A spring has a spring constant of 82.0 N/m. How much must this spring be compressed to store 25.0 J of potential energy?
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Physics

10/19/22

Please help me!
Does the net work done on a particle depend on the choice of reference frame? Explain why or why not.
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Physics

10/19/22

Please help me!
A box of mass 4.0 kg is accelerated from rest by a force across a floor at a rate of 2.4 m/s2for 5.3 s. Find the net work done on the box. Express your answer using two significant figures.
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Physics

10/19/22

Please help me with this question!
How much work is done by the gravitational force when a 260 kg pile driver falls 2.30 m? Express your answer using three significant figures.
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Physics

10/19/22

Physics 2D Momentum
A 3520 kg truck moving north at 16.0 m/s makes an inelastic collision with a 1480 kg car moving 21.0 m/s east. What is the magnitude of their joint velocity after the collision?
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Physics

10/18/22

The amount of heat released when 1.5 grams of steam at 100 degrees Celsius is converted into liquid water at 100 degrees Celsius is ____ J.
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Physics Math

10/18/22

Physics and thanks for the help
What applied horizontal forces is required to accelerate a 10-kg body along a horizontal surface with the acceleration of 2 m/s^2 if the coefficient of kinetic friction is 0.3?
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Physics Math

10/18/22

Vector Subtraction

Let [A] = 4î − 5ĵ and [B] = −9î+ 6ĵ What is [C] = [A] − 3 [B)]? Give your answer as a magnitude and direciton.I'm able to get the magnitude, but whatever I find for the angle seems to be wrong.
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Physics

10/17/22

Uniform Circular Motion
Suppose a piece of dust is stuck to a CD such that it does not slip even when the CD is spinning.If the constant spin rate of the CD is 460 rpm, then what angular distance, in radians, is traveled... more
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10/17/22

, calculate the maximum error value and the number of bits to be transmitted per second
Assume that you have an analog signal with a maximum and minimum amplitude of +5 and -5 and a bandwidth of 1000 Hz. This signal is desired to be sampled in practice. If quantization level 256 is... more
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