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A freezer is used to freeze 5.0 L of water completely into ice. The water and the freezer remain at a constant temperature of T = 0°C.
(a) Determine the change in the entropy of the water.
J/K
(b) Determine the change in the entropy of the freezer.
An archer pulls back 0.75 m on a bow which has a stiffness of 200 N/m. The arrow weighs 50 g. What is the velocity of the arrow immediately after release
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 62.9 N, Jill pulls with 87.7 N in the northeast direction, What is the direction of the net force
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
What is mechanical energy dissipated by resistive forces
The truncated form of the virial equation is P(VB) = RT , where B is a constant that depends only on temperature. Derive the expression for reversible isothermal work for a gas that obeys this equation of state.
The current in an electron beam in a cathode-ray tube is measured to be 70 uA. How many electrons hit the screen in 5.0s
The ink drops have a mass = 1.0×10-11 each and leave the nozzle and travel horizontally toward the paper at velocity = 22. The drops pass through a charging unit that gives each drop a positive charge by causing it to lose some electrons.
using planck's law, Evaluate the Stefan-Boltzmann constant and Evalute the constant in the wien displacement law
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, What is its kinetic energy at the end of this interval
assume you throw someone a ball, thereby transporting kinetic energy. Could you consider the motion of the ball to be a mechanical wave pulse.
A sports car accelerates with constant acceleration from rest to a speed of 31.57 m/s in 4.127 s. The angular acceleration of the rear wheels is 17.75 s-2. What is the radius of the rear wheels
Compute the magnitude of the torque on the tree due to the tension in the rope, with the base of the tree acting as the reference point
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