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A rod of length l and mass m, pivoted at one end, is held by a spring at its midpoint and a spring at its far end, both pulling in opposite directions. The springs have spring constant k, and at equilibrium their pull is perpendicular to the rod. Find the frequency of small oscillations about the equilibrium position.
A 5.80uFparallel-plate air capacitor has a plate separation of 4.00mmand is charged to a potential difference of 400V. Calculate the energy density in the region between the plates
A 1590 kg car starts from rest on a horizontal road and gains a speed of 61 km/h in 30 s (a) what is its kinetic energy at the end of the 30 s.
The filament in an incandescent light bulb is made from tungsten (resistivity 5.6 x 10-8 ?·m). how long must the wire be
A straight wire of length l is oriented esast-west and is in a magnetic field B pointing north. what is the current through the rod
A constant 0.28 T magnetic field passes through a loop at an angle of 35 degrees with respect to the normal of the area of the loop. find the flux through the loop
A Circuit has two identical capacitors with capacitance 4x10^-6 in parallel connected to two identical four ohm resistors in parallel. What is the initial charge on the capacitors
the bridge is 3910m long and is constructed of steel. how much longer is the bridge on a warm summer day (30.0 C) than on a cold winter day (-5.0 c)
a ball with a mass of 12 kg is traveling towards the left at a speed of 10 ms another ball with a mass of 14 kg is
The motor of a Scout rocket uses up all the fuel and stops when the rocket is at an altitude of 200 km above the surface of the Earth, How high will this rocket rise
Two canoes are tied together and traveling down a river with the current. Spotting a waterfall, the two canoeists cut the rope, What is the combined mass of this canoe and rider
A(n) 716 kg elevator starts from rest. It moves upward for 4.36 s with a constant acceleration until it reaches its cruising speed of 2.14 m/s. Find the average power delivered by the elevator motor
Consider a conical pendulum with a bob of mass m = 81.0 kg on a string of length L = 10.0 m that makes an angle of ? = 6.00° with the vertical. Determine the radial acceleration of the bob
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