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A block with mass m = 2.00 kg is placed against a spring on a frictionless incline with angle = 21°. (The block is not attached to the spring). The spring, with spring constant k = 19.8 N/cm, is compressed 16.2 cm and then released. What is the elastic potential energy of the compressed spring?
What is the change in the gravitational potential energy of the block-Earth system as the block moves from the release point to its highest point on the incline?
How far along the incline is the highest point from the release point?
an iron casting containing a number of cavities weighs 5.70e3 n in air and 3.74e3 n in water. what is the total volume
A single conservative force acts on a 5.30-kg particle within a system due to its interaction with the rest of the system. calculate the change in the potential energy of the system
A pump lifts 200 kilogram of water per hour a height of 5.0 meter. Find the minimum necessary power output rating of the water pump
If an object of 50 grams of unknown material at 100 degrees C is mixed with 100 grams of water at 0 degrees C, the final temperature is 40 degrees C
Two people, one twice as massive as the other, try to play tug of war on a nearly frictionless, level, icy surface. How far does the heavier person slide
1. when a charged particle moves at an angle of 15deg with respect to a magnetic field it experiences a magnetic force
A toy battery has an emf of 15.0 V. The terminal voltage of the battery is 11.6 V when it is delivering 20.0 W of power to an external load resistor R. What is the value of R? What is the internal resistance of the battery?
a rock of mass m 1.35 kg is dropped from a height of h 2.7 m into a pool of water. at a time of t 1.37 s after
A daredevil jumps a canyon 9.6 m wide. To do so, he drives a car up a 18° incline. What minimum speed must he achieve to clear the canyon
A 2.30kg hoop 2.20m in diameter is rolling to the right without slipping on a horizontal floor at a steady 3.00rad/s. What is the total kinetic energy of the hoop
A certain lightbulb has a tungsten filament with a resistance of 18.0 when cold and 138 when hot. Find the temperature of the hot filament
A 600 Hz sound wave travels through a gas. If the wavelength of the sound is 0.4 m, what is the speed of sound in the gas
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