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1. Your friend Joe hangs from a horizontal bar by his two hands, with his arms each inclined 35 degrees from the vertical (so that his arms have an angle between them of 70 degrees. If his mass is 76 kg, what is the tension in each of his arms?
A 67kg man's arm, including the hand, can be modeled as a 70cm -long uniform cylinder with a mass of 3.5kg. by how much does he raise his center of gravity
A 9.58 m × 14.9 m house is built on a 14.2-cm-thick concrete slab. What is the heat-loss rate through the slab
A projectile is fired in such a way that its horizontal range is equal to 14 times its maximum height. What is the angle of projection
If you twirl a small 7.0-g wooden ball in a circle at 4.0 revolutions per second on a light 10-cm string, approximately how many units of angular momentum does it have
In a two-slit interference experiment, with the sits 0.041 mm apart and screen at a distance 75 cm, What is the wave length of the light
The traces of the rain on the side windows of the car make an angle of 60.0 with the vertical. Find out the velocity of the rain with respect to the following reference frames.
A 42.0 kg seal at an amusement park slides from rest down a ramp into the pool below. If the seal reaches the water with a speed of 4.30 m/s, what is the work done by kinetic friction
A street lamp weighs 180 N. It is supported by two wires that form an angle of 150° with each other. The tensions in the wires are equal.
A standard tournament domino is 1.5 in wide and 2.5 in long. What relative speed is required
Compute the heat absorbed by the gas and work done by the gas during expansion.
What horizontal force P must a worker exert on the rope to position 50 kg. crate directed over the trailer.
A meterstick is at rest in an inertial frame S2. If S2 moves with a speed of 0.7c with respect to a rest frame S1, find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
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