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A child is twirling a 0.0120 kg ball on a string in ahorizontal circle whose radius is 0.100 m. The ball travelsonce around the circule in 0.500 s.
A- determine the centripetal force acting on the ball?
B- if the speed is doubled, does the centripetal force double?if not, by what factor does the centripetal force increase?
Visible light of wavelength 480 nm is incident on a diffraction grating with a slit spacing of 0.003 mm
A current of 27.0 mA is maintained in a single circular loop of 1.90 m circumference. A magnetic field of 0.870 T is directed parallel to the plane of the loop. Calculate the magnetic moment of the loop
In each of the following cases, the mass is 32.0 kg and the radius is 7.50 cm. (a) What is the moment of inertia (kg m2) of a solid cylinder rotating about an axis parallel to the symmetry axis but passing through the edge of the cylinder? (b) What i..
Five moles of an ideal monatomic gas with an initial temperature of 128 C expand and, in the process, evaluate the final temperature of the gas
A barge of mass 5x 10^4 kg is pulled along the Erie Canal by two mules, walking along towpaths parallel to the canal on either side of it. The ropes harnessed to the mules make angles of 45° to the canal.
An electric device, which heats water by immersing a resistance wire in the water, What is the resistance of the heater wire
A car accelerates from rest at a constant rate of 2m/s2 for 5s. At the end of this time the speed of the car is 10 m/s. How far does the car travel in this time
A light pipe consists of a central strand of material surrounded by an outer coating. The interior portion of the pipe has an index of refraction of 1.74. If all rays striking the interior walls of the pipe with incident angles greater than 66.6 deg..
An object at rest explodes into three peices of equal mass. One moves east at 20 m/s; What is the velocity of the third piece
explain the shape of the distribution of sample means.
Shown on the right is large block 17.0 cm wide, 16.0 cm long, and 27.00 cm high of mass 2.55 kg. This block is passing through air (density ?air = 1.43 kg/m3). Calculate the terminal velocity of the block if it is traveling downward with a drag coeff..
A child of mass 30 kg stands at the edge of a merry-go-round of mass 130 kg and radius 2.3 m, and both are initially at rest. How far does the child walk as measured relative to the merry-go-round
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