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Find (a) the energy absorbed as heat and (b) the change in entropy of a 3.94 kg block of copper whose temperature is increased reversibly from 21.1°C to 88.4°C. The specific heat of copper is 386 J/kg·K.
A skier of mass 71.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull him a distance of 57.5 m up a 31.0° slope (assumed frictionless) at a constant speed of 2.20 m/s
One way to attack a satellite in Earth orbit is tolaunch a swarm of pellets in the same orbit as the satellite but inthe opposite direction. What is the kinetic energy of the pellet in the reference frame of the satellite just before the collision
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
a roller coaster traverses a vertical circular track.a what speed must the car have so that it will just make it over
A slender rod with a length of 0.300m rotates with an angular speed of 8.80rad/s about an axis through one end and perpendicular to the rod. What is the induced emf in the rod
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 25.0° below the horizontal. Find the car's position relative to the base of the cliff when the car lands in the ocean
when a pair of slits is illuminated by white light sometimes one orders rainbow will overlap with that of another
A student bikes to school by traveling first = 1.10 north, then = 0.300 west, and finally = 0.100 south. what distance would the bird cover
A charged object has two forces acting on it: F1 (4 Newtons, pointing up at 120 degrees from the positive x axis), Compute the total (net) force acting on the object
A 0.45mW laser produces a beam of light with a diameter of 1.5mm. What is the average intensity of this beam
The escape speed of a particular planet with a radius of 8.600e+6 m is 14,500 m/s. What is the mass of the planet
Given that the goal is to allow all vehicles to come safely to a stop before reaching the intersection, calculate the maximum desired speed limit
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