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A 35.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 430 N.
(a) Find the child's speed at the lowest point.b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)
Laboratory in your city accidentally released some radioactive gas
Given the strategic decisions in the case, Classify three leadership actions that the industry would need to be consider to implement the decisions. Explain why these are critical to implementing the strategic decision.
the radius of curvature of the cornea is typically 7.7 mm. if we construct a lens with this radius of curvature on one
What is size of the gravitational force on the moon
An AC voltage of the form ?v = 100 sin 1 000t, where ?v is in volts and t is in seconds, is applied to a series RLC circuit. Find the average power delivered to the circuit
As a baseball is being thrown, it goes from 0.0 to 40.0 m/s in 0.17 s. What is the acceleration of the baseball
A 0.15 kg ball hits a wall with a velocity of (4.00 m/s) + (5.50 m/s) + (5.50 m/s) . It rebounds from the wall with a velocity of (2.00 m/s) + (3.50 m/s) + (-3.20 m/s). What is the change in the ball's momentum?
you have a mechanism by which you can use a magnetic spectrograph to chose the energy of the beta rays from a 137cs
A piece of copper wire has a resistance per unit length of 6.45 10-3 ?/m, Find the magnetic field strength at the center of the coil
An electron is accelerated through 2450 V from rest and then enters a region wherethere is a uniform 1.80 T magneticfield. What are the maximum and minimum magnitudes of the magentic force acting on this electron?
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.30 106 kg/s. how much power would be produced by these falls
A system has a heat source supplying heat at a rate of 149 W and is doing work at a rate of 104.3 W. At what rate is the internal energy of the system changing
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