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Galileo dropped a ball from the tower of Pisa. The ball hit the ground in 3 seconds.
part a) what was the speed on striking the ground?
part b) what was the average speed of the ball during the 3 seconds?
part c) how high is the tower of pisa?
A 2200kg sport utility vehicle travelling at 96 km/h can be stopped in 0.20 s if it hits a concrete wall. Suppose a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash a..
What is voltage difference between floor and hover-board
Your cup of coffee is too hot to drink when served at 95.What is mass of an ice cube, taken from a -19.0 freezer, that will cool your coffee to a pleasant 62.
Assume, instead, that the observer had been moving away from Earth with a speed of 0.80c. How much time would observer have measured for the car to be filled in this case.
A 310kg wooden raft floats on a lake. When a 75kg man stands on the raft, it sinks 3.20cm deeper into the water. When he steps off, the raft vibrates for a while.
The area of a room floor is 25ft^2. How many square meters are on the floor? a)7.6m^2 b)2.3m^2 c)82m^2 d)2.6*10^2m^2 e)none
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
You & your friend peter are putting new shingles on a roof pitched at 25 degrees. You are sitting on the very top of the roof when peter, who is at the edge of the roof directly below you, 5.1m away, asks you for the box of nails. Rather than carr..
A screen with a double-slit with a slit separation of 0.03 mm is illuminated by light of a wavelength 600nm. What is the distance from the slit to the screen in meters
A hunter aims directly at a target (on the same level) 160 m away, If the bullet leaves the gun at a speed of 260 m/s, by how much will it miss the target
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. Her dog runs ahead, at twice the speed, reaches the campground and turns around until it meets her again. Then, the dog proce..
A continuous line of charge lies along an x axis, extending from x = +x0 to positive infinity. The line carries charge with the uniform linear charge density λ0. What are the magnitude and direction of the electric field at the origin.
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