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A 2.0 gram bullet leaves the barrel of a gun at a speed of 325 m/s.
Calculate its kinetic energy.
Calculate the average force exerted by the expanding gases on the bullet as it moves the length of the 41 cm long barrel.
A 10-kg block of ice has a temperature of -12°C. The pressure is one atmosphere. Theblock absorbs 4.12 multiplied by 106J of heat. What is the final temperature of the liquid water
After hitting a long fly ball that goes over the right fielder's head and lands in the outfield, how much work was done on the player by friction
A 40 cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. how far will a point on the edge of the wheel have traveled in this time. what is the ratio of the new force to the old force.
An arrow has a velocity of 45.0 m/s when it reaches a straw target. estimate its average acceleration while coming to rest
A heat engine makes use of 785 kJ of heat to produce 245kJ of work. It operates at a temperature of 285 oC It exhausts heat to the 22.5 oC atmosphere. What is its ideal efficiency and its actual efficiency. Why are these two quantities so different..
A satellite operates at an altitude of 20,200 km and uses communication frequencies of1575.42 MHz. Find the gravitational frequency change with respect to Earth.
Suppose you put five electrons into a 0.30nm -wide one-dimensional rigid box (i.e., an infinite potential well). What is the ground-state energy
An electron microscope is designed to resolve objectsas small as 0.14 nm. What energy electronsmust be used in this instrument?
A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9 x 10^7 m. If the satellite circles the planet once every 2.1 h in the larger orbit, what is the mass of the planet
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. What is the force exerted by the muscle if its effective perpendicular lever arm is2.00 cm
a ships anchor chain is wrapped around a hollow steel drum of mass m 500 kg and radius r 0.5m. the drum is located on
When a golfer tees off, the head of her golf club which has a mass of 280 g is traveling 58 m/s just before it strikes a 46-g golf ball at rest on a tee. determine the speed of the golf ball just after impact
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