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A 83 kg solid sphere with a 19 cm radius is suspended by a vertical wire. A torque of 0.41 N·m is required to rotate the sphere through an angle of 0.81 rad and then maintain that orientation. What is the period of the oscillations that result when the sphere is then released?
c denotes partial differentiation wrt coordinate xc and c denotes covariant differentiation wrt coordinate xc .1.
The energy eigenstates of the hydrogen atom are described by Schrödinger wavefunctions ?(r), where the energy of the ground state ?100(r)=-13.6eV. Determine the expectation value of the energy
A 72 cm long, 1.0 mm diameter steel guitar string must be tightened to a tension of 1800 N by turning the tuning screws. By how much is the string stretched
In a typical lightning flash, the potential difference between the cloud and the ground is 10^9V and the charge transferred is 30 C. Calculate the final speed of the car
A laser pulse has an energy of 15 J and a beam radius of 2 mm. The pulse duration is 11 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
question consider a system of two balls in freefall neglect drag. one ball has a mass of 5kg and the other of 7kg. what
Two students are on a balcony 18.30 m above the street. One student throws a ball, b1, vertically downward at 16.80 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed.
A child is twirling a 0.0224-kg ball on a string in a horizontal circle whose radius is 0.104 m. The ball travels once around the circle in 0.350 s. Determine the centripetal force acting on the ball
A 3.00-kg block starts from rest at the top of a 35.5° incline and slides 2.00 m down the incline in 1.50 s, Find the frictional force acting on the block
A cubic box of volume = 0.34300m^3 is filled with air at atmospheric pressure at 20.000*C. What is the net force on one side of the box
two charges e and -e are a distance of 0.620 nm apart in an electric field e that has a magnitude of 3.55 knc and is
Suppose that 1.4 moles of an ideal diatomic gas has a temperature of 1273 K, and that each molecule has a mass 2.32 × 10-26 kg, How many degrees of freedom does each molecule of the gas have
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