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An object of mass 10 kg falling from a height of 20 m on to a hard floor rebounds to a height of 5m. If the time during which the object was in intact with the ground is 0.004s what was the force exported by the object on the ground?
Calculate the potential energy of a rock with a mass of 55 kg while sitting on a cliff that is 27 m high.
A 0.200-kg block along a horizontal track has a speed of 1.40 m/s, What is the spring's maximum compression if the track is frictionless
a rubber ball is shot straight up from the ground with speed v0. simultaneously a second rubber ball at height h
The asymptotic wavelength (λ limit) for the Brackett series is 1500 nm. Determine the wavelength of the first emission line
a wire of arbitrary shape which is confined to the x-y plane carries a current i from point a to point b in the plane.
A light source of wavelength λ illuminates a metal and ejects photoelectrons with a max KE of 1.00eV, Obtain what is the work function of the metal
One cubic meter of water (see Table 4.4 for the mass density of water) flowing over the Osprey Falls in Yellowstone National Park drops 46 m, what is the temperature increase of the water
Find the moment of inertia of a solid uniform sphere of radius R which has a spherical cavity of radius R/2. The spherical cavity is centered at a point R/2 from the center of the sphere. Take the axis of rotation to go through the center of the sphe..
An electron is held 2.10cm from a vertically aligned infinite charged plane and then released from rest. What is the surface charge density of the infinite plane
in 1996 nasa performed an experiment called the tethered satellite experiment. in this experiment a 2.30 x 104-m length
A 121 Watt driveway light bulb is on 6.5 hours per day. Assuming the power company charges 8.6 cents for each kilowatt-hour of electricity used. Calculate the annual cost to operate the bulb
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the astronaut's orbital speed
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