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A freezer is used to freeze 2.0 L of water completely into ice. The water andthe freezer remain at a constant temperature of T =0°C.
(a) Determine the change in the entropy of thewater.
J/K
(b) Determine the change in the entropy of the freezer.
A dentist's drill starts from rest. After 3.20 s of constant angular acceleration it turns at a rate of 2.3 104 rev/min. Find the drill's angular acceleration
A puck slides on a surface for 5.6 m before it stops. If it was moving at a velocity of 15 m/s and has a mass of 1.2 kg, what is the force of friction exerted on the puck
In the system shown in the figure below, a horizontal force F with arrowx acts on an object of mass m2 = 8.60 kg. The horizontal surface is frictionless. Consider the acceleration of the sliding object as a function of Fx.
A 240 , 50.0-cm-diameter turntable rotates on frictionless bearings at 57 . A 22 block sits at the center of the turntable. A compressed spring shoots the block radically outward along a frictionless groove in surface of the turntable. What is turn..
ray of light comes to the interface that is part of a sphere of radius r=15.0 cm. Where does the refracted ray cross the principal axis if the incident ray is 5.0 cm away from the principal axis
A grl is strapped to a board that is moving so that gamma along the length of the board is 2.0. what is the diameter of your hole in her reference frame when she arrives
A uniform 2.95- kg spinning disk with a radius of 0.243 m is brought to rest by a brake-pad pressed against the side 0.165 m from the rotation axis. What frictional force was applied by the brake pad
It position is xo>0 and i give it a kick so that it moves back towards the origin and executed simple harmonic motion with amplitude 2xo. Find out its position as a fuction of time in the forum of x(t)=acos(wt-&)
Two cars with equal mass collide head on. One car is going 18 mph. That car is push backward about 38 feet. What is the speed of other vehicle.
The equation of a transverse wave on a string is y = (6.1 mm) sin[(30 m-1)x + (300 s-1)t] The tension in the string is 42 N. Find the linear density of this string
How high will a 0.32kg rock go if thrown straight up by someone who does 119J of work on it? Avoid air resistance.
A double slit experiment is performed with sodium(yellow) light of wavelength 589.3nm and the interference pattern is observed on a screen 100 cm away. determine the separation between slits
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