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Four wooden beams, each of length 2a, are nailed together at their midpoints to form the support system shown. Assuming that only vertical forces are exerted at the connections, determine the vertical reactions at A, D, E, and H.
Saturn has an equatorial radius of 6.00 107 m and a mass of 5.67 1026 kg. Compute the acceleration of gravity at the equator of Saturn
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 0.680 m wide.
a block of mass m is attached to two springs with spring constants k1 and k2 ina parallel b series
On one of the very last lines in the solution it is stated that x= L/ 2.414. Then it skips to say that x= 0.414*L. What is the reasoning behind this step
A light bulb used in a slide projector draws a current of 6 amperes and provides a 20 ohm resistance in a circuit. What voltage is supplied to the circuit
Consider a thin rod of mass 3.7 kg, length 1.8m and uniform density. The rod is pivoted at one end on a frictionless horizontal pin
Three point charges are located on the x-axis. The first charge, q1= 10uC, is at x= -1.00m; the second charge, q2 = 20.0 uC,, Find the force that each charge is subjected
The horizontal surface is frictionless and the system is free from rest. Using energy concepts, determine the speed of m3 after it moves down a distance of 6.0 m.
Suppose you make a cup of tea with boiling water straight from a kettle, but then the phone rings, Estimate the change in entropy of the room during the cooling of the tea
A bean of 50 keV x-rays (104/second) a beam of a750 keV photons are incident on a 1 centimeter thick sample of bone. Compute the energy disposition for each beam
A rotating object starts from rest at t = 0 s and has s constant angular acceleration. At a time t = 7.0 s the object has an angular velocity of omega = 16 rad/s. What is the angular velocity at time t = 14 s?
A ball of mass 20 kg moves with a velocity of 2 m/s along the +x axis (call it ball A). It collides with a ball of mass 12 kg which is initially at rest (call it B), What is the final velocity of ball B
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