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A block of mass m is thrown vertically down from a height of 8m. Determine the mass of the block, its initial and final velocities and the potential and kinetic energies at the start and end of its travel. The Kinetic energies of the block when it is 2m below the start is 250J and 642 J when it is 2m above the ground
Light of wavelength 650 nm falls on a 0.31 mm wide slit and forms a diffraction pattern on a screen 1.5 m away. Find the width of the central maximum
Suppose the magnitude of the gravitational force between two spherical objects is 2000 when they are 100 apart. find the magnitude of the gravitational force between the objects
an automobile tire is inflated with air originally at 10.0degc and normal atmospheric pressure. during the process the
A monatomic ideal gas expands adiabatically from an initial volume of 72 L, What is the final volume of the gas
A tube 1.20 m long is closed at one end. A stretched wire is placed near the open end. The wire is 0.330m long and has a mass of 9.60g.
A child whose mass is 40 kg obstruction is on the 3rd floor of the building at a height of 15 m above the ground. Calculate the potential energy of the child if the child is now located on the 5th floor and is located 25 m from the ground!
Calculate the magnitude of the average force on a bumper that collapses 0.180 m while bringing a 850-kg car to rest from an initial speed of 1.9 m/s.
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
If you had only one telescope and wanted to take both visible-light and ultraviolet pictures of stars, explain where should you locate your telescope
if you were to walk briefly in space without a spacesuit while far from the sun as an astronaut does in the movie 2001a
A solenoid of length 50 centimeter is made of 11000 circular coils. It carries a steady current of 11 Amp. Estimate the initial flux through the small coil
In 1960 a Tampa, Florida, mother reportedly raised one end of a car that had fallen onto her son when a jack failed. determine how much work did her force do on the car
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