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A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With three 6.63 g coins stacked over the 11.8 cm mark, the stick is found to balance at the 39.0 cm mark. What is the mass of the meter stick, in g?
Boxes A and B have masses of 12 kg and 4 kg, in that order. The two boxes are released from rest. Use conservation of energy to find out the boxes speed when box B has fallen a distance of 00.5 m.
A number of people are riding in a hot-air balloon. The combined mass of the people and balloon is 281 kg. The balloon is motionless in the air, since the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' f..
48 g of ice at -10oC is added to 150 g glass filled with 250 g of water at 20oC. At what temperature will the mixture reach equilibrium
Michael Phelps won a gold medal at the 2008 Beijiing olympics by swimming the 200 meter medley in 1:54:80. On an off-day Mike swims the medley in 1:58:32. What is the speed in mph? (Give the ans. to two decimal places)
High-voltage power lines are a familiar sight throughout the country, What is the resistance of 15 kilometers of this wire
Illustrate what is the average emf that is induced in this coil if it is in a region where B=2.0 T upward, and the coil's plane is perpendicular to B?
A 0.40-kg iron horseshoe is dropped into 1.15L of water in a 0.34-kg iron pot initially at 20.0?C. Determine the initial temperature of the hot horseshoe.
Suppose that you want to take a photograph of yourself as you look at your image in a mirror 3.1m away, For what distance should the camera lens be focused
Let all the three charges be placed at the center of a tetrahedron, composed of four triangular faces of equal area. Calculate the net flux through each surface
A 800- kg car collides with a 1500- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car
An electron and a positron, each moving at3.0×105m/s, collide head on, disappear, Determine the momentum of each photon
A woman has a mass of 59 kg, What is her weight on earth and What are her mass and her weight on the moon
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