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Because it can go from rest to 14.9 m/s (about 33 mi/h) in 2.2 s, one of the fastest-accelerating animals is the cheetah. If its mass is 56.0 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in the following units. (a) watts (b) horsepower
a positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. what is the system's total kinetic energy
The frequency of light emitted by a toaster is 2.5 GHz. How many toaster photons are required to heat the water
The rain-soaked shoes of a man may explode if ground current from nearby lightning vaporizes the water. find what average current is required to vaporize water
A cylinder contains 2 moles of an ideal monatomic gas that is initially at state A with a volume of 0.01 m^3 and a pressure of 4.0x10^5 Pa. Is this device a refrigerator or a heat engine
A mass of 2.4 kg is moving at 19.2 m/s in the positive x direction. What is the total kinetic energy of both masses
A combination lock has a 1.5 -diameter knob that is part of the dial you turn to unlock the lock. What is the most torque you can exert on the knob
A copper block is removed from a 300^0 C oven and dropped into 1 L of water at 20.0^0 C. The water quickly reaches 25.5^0 C and after that remains at that temperature. What is the mass of copper block.
A battery is designed to have an EMF of 12.0V. When the battery is connected to an unknown resistor in series the terminal voltage drops down to 10.0V. what is the value of the unknown resistor
A ball is thrown directly upward with an initial velocity of 10 m/s. how long is the ball in the air
A car initially traveling at 23.2 m/s undergoes a constant negative acceleration of magnitude 2.10 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the ..
a spacecraft is in orbit around a planet. the radius of the orbit is 3.0 times the radius of the planet which is r
A sled and rider with with a combined mass of 50kg are at the top of a hil a height of 14m above the level ground below, After the push, what is the total mechanical energy of the sled and rider at the top of the hill
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