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A roller coaster car rolls down a frictionless track, reaching a speed V0(Velocity original) at the bottom. If you want the car to go twice as fast at the bottom, by what factor must you increase the height of the track? If you could explain using equations to show your proof.
A cement block accidienatlly falls from rest from the ledge of a 63.7 -m-high building when the block is 18.2m above the ground a man 2.00m tall looks up notices that the block is directly above him
A sealed cubical container 17cm on a side contains three times Avogadro's number of molecules at a temperature of 16°C. Find out the force exerted by the gas on one of the walls of the container.
You are studying standing sound waves in an organ pipe of length L with both ends open, What is the frequency of the musical tone produced by the organ pipe in the situation described in part b
A thick-walled, non-conducting spherical shell has a positive uniform volume charge density p bounded by radii r1 and r2>r1. With V=0 at infinity, Find the net charge of the shell
A ball is kicked with an initial velocity of 15.5 m/s in the horizontal direction and 10.5 m/s in the vertical direction, At what speed does the ball hit the ground in m/s
If the asteroid fragment contains carbon, it may burn when entering Earth's atmosphere. Which type of chemical bond would result from this process
An airplane with a speed of 69.8 m/s is climbing upward at an angle of 40° with respect to the horizontal. Calculate the distance along the ground, measured from a point directly beneath the point of release
an astronaut weighs 1000N on the surface of the earth(radius = 6.38*10^6m) what is the weight of the astronaut at the elevation of 620 km above the earth's surface
A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 1.3 s later. How deep is the ocean at this point? Suppose the speed of sound in seawater is 1560 m/s and d..
A bottle has a mass of 31.00g when empty and 97.94g when filled with water. what is the specific gravity of the other fluid
An airplane pilot wishes to fly directly westward. According to the weather bureau, a wind of 70.0 km/h is blowing toward the south. What is the speed of the plane over the ground
A 3.2-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system when the 3.2-kg block is replaced by a 4.1-kg block
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