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A 249.0 kg block of ice at 0*C is placed in a large lake. The temperature of the lake is just slightly higher than 0*C, and the ice melts.
1) What is the entropy change of the ice?
2) What is the entropy change of the lake?
3) What is the entropy change of the universe, that is, the ice plus the lake?
The front 1.20 m of a 1600 kg car is designed as a "crumple zone " that collapses to absorb the shock of a collision. what is the magnitude of the average force on the car
There are four coils of wire being used as electromagnets. They all have the equal size and are made up of the same material but have a different number of loops.
What is frequency of the fork
While, entering a freeway , a car accelerates from a speed of 90 m/s at a rate of 2.17 m/s^2 for 5.50 s. Whats the cars final velocity
Suppose a particle with mass m release from rest in a uniform gravity g. Suppose the drag force is proportional to speed square, find an expression that gives the relationship between velocity and time
A city employee wanted to measure the height of a tall tree. The employee stood 9.50 m from the base of the tree; and he saw that his line of sight made an angle of 65.2 degrees above the horizon,
Physics - Classical Mechanics - Inclined Plane, A packing crate is placed on a plane inclined at an angle of 350 from horizontal. If the coefficient of static friction
Find the net rate of radiation by a pot at 45.1°C that has been placed in a -24.1°C freezer. The pot\'s surface area is 0.117 m2 and its emissivity is 0.635
The first electron has the initial velocity v0 that makes an angle θ=45° with the lower plate and has a magnitude of 7.53×106 m/s. would this electron strike one of the plates? If so, what is the horizontal distance from the left edge? If not enter t..
A 2110-kg test rocket is launched vertically from the launch pad. Its fuel (of negligible mass) provides a thrust force so that its vertical velocity as a function of time is given by v(t)=At+Bt^2, What was the initial thrust due to the fuel
Assume you knew some unstable particles have a half life of 1.00 seconds when not moving but had a half-life of 5.00 seconds while in a particle accelerator. How fast must the particles have been traveling
Two cars are 1.35km apat and starting com rest mov directly toward each other. Car a has an acceleration of .37 m/s2 and car b has acceleration of .52 ms2
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