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An air bubble ascends from the bottom of a lake 15 m deep. The temperature at the bottom of the lake is 4oC, and near the surface it is 20oC. • What is the pressure on the bubble at a depth of 15m?
• If the bubble was originally 0.1m3 in size at the bottom of the lake, what would be the volume of the bubble at the top of the lake?
What is the charge on each sphere if the two charges are alike?
you ar charged to work on reducing expenditures for a company.you think that the company can save considerable money on fuel costs by lowering the room temperature of the building for daily use, How much heat will be saved each morning
assume a charge starts at rest on an equipotential surface, is moved off that surface, and then is eventually returned to the same surface at rest after a round trip. How much work did it take to do this? Explain.
The maximum tension that a 0.5m string can tolerate is 14N. A 2.5kg ball is attracted to the string being whirled in a vertical circle. What is the maximum speed the ball can have at the top of the circle.
What is the net force exerted on the skier, assuming his acceleration is constant.
Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 2.10 x 105 m/s. What is the distance of closest approach?
A moon orbits a planet because of the gravitational force between them. Similarly, each body also experiences a tidal force due to gravity. Consider how the magnitude of the tidal force changes as distance between a planet and moon varies.
Consider an airplane flying at Mach 4 at 70,000 feet. A shock is formed due to supersonic flow. Find the total pressure at the nose using 3 approaches
Standing on ground 3.5 from the wall of a building, you want to throw a package from your 1.6 shoulder level to someone in a second-floor window 4.5 above the ground.
Show that the horizontal resultant of these two forces on the lamp is zero. Work out the weight of the lamp.
A highway is to be built between two towns, one of which lies 30.0 km south and 83.0 km west of the other. What is the shortest length of highway that can be built between the two towns, and at what angle would this highway be directed?
Iodine molecules dissociates into atoms after absorbing light of 4500 A.If one quantum of radiation is absorbed by each molecule, Find the KE of the iodine atoms
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