Determining the spring constant problem
A 1000 kg safe is held 2 m above a heavy duty spring when the rope holding it breaks. The safe compresses the spring 50 cm. What is the spring constant?
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Two identical point charges (q = +7.25 10-6 C) are fixed at diagonally opposite corners of a square with sides of length 0.485 m. A test charge (q0 = -2.60 10-8 C), with a mass of 7.05 10-8 kg, is released from rest at one of the empty corners of t
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. Each door is 0.700 m wide.
An interference pattern is observed on the screen 0.4 m away from the grating but the fringes are not evenly distributed. In some regions on the screen, there are overlapped fringes.
An irreguarly shaped object of mass 2.40 kg has a moment of inertia of 4.566 kgm^2 about an axis through the point 1.05 m from its center of mass. Calculate the moment of intertia about a parallel axisthrough its center of mass.
Consider an infinitely large homogeneous mixture of 235U and a moderating material. Determine the ratio of fuel-to-moderator density that will render this system critical for the following moderators:
If the clock's driving spring is allowed to run down, damping due to the friction will cause the pendulum to slow to an eventual stop. If the time constant for decay is 300 sec, how long will it take for the pendulum's swing to be reduced to half
A jet flying at 110 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 1.64 × 105 kg. Calculate the magnitude of the necessary lifting force.
A copper calorimeter can with mass 0.100kg contains 0.160kg of water and 0.018kg of ice in thermal equilibrium at atmospheric pressure.
A wedge-shaped sliver of glass viewed from above is illuminated with 436-nm light. The sharp edge is dark. What is the thickness of the glass at the fifth bright fringe.
A 5.9cm -thick layer of oil (n=1.46) is sandwiched between a 1.5 -thick sheet of glass and a 2.5 cm-thick sheet of polystyrene plastic (n=1.59). How long (in ns ) does it take light incident perpendicular to the glass to pass through this 9.9cm -t
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