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Problem: A 1200kg car moving at 12.8m/s collides with stationary car of mass 1500 kg. of the two vehicles lock together, what is their combined velocity immediately after the collision?
A baseball player decides to keep going past second base and try for third base. If the player comes to rest at third base, how much work was done on the player by friction
It has been suggested that rotating cylinders about 9.0 mi long and 6.0mi in diameter be placed in space and utilized as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals the free-fall..
Aircraft equipped with powerful radar units are forbidden from turning them on when on the ground near people. Explain why this is so.
A 10 N object rests on a 10° incline. What is the normalforce? What is the parallel force? A 10 kg object rests on a10° incline. What are the normal and the parallel forces?
In a certain time, light travels 3.5km Ina vacuum. During the same time, light travels only 2 5 km in a liquid. What is the liquid refractive index
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity, What is the phase difference between the speakers
Explain how Einstein’s contribution to understanding the force between the earth and the moon differed from Newton’s. Include a brief statement of Einstein’s explanation in your answer.
The heat addition process of a Carnot heat engine utilizing a piston-cylinder mechanism is executed by vaporizing saturated liquid R134a at 100 [kPa] to saturated vapor.
How much work has he done? (b) Another player, wearing clothes that offer better protection against heat loss, is able to remain in the game long enough to do 2.1 × 105 J of work. What is the magnitude of the heat that he has lost?
a police officer in hot pursuit drives her car through a circular turn of radius 300m witha constant speed of 80.0km/h. what are the magnitude and the angle relative to vertical of the net force
The most common isotope of a single nucleus (stripped of its electrons) is accelerated from rest through a potential difference of 1200V, What element is the unknown nucleus on periodic table
A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of the hand is transformed into elastic potential energy of the bending board; if the board bends far enough, it breaks. what is the average force on..
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