Initial volume to the final volume
A child's helium-filled balloon escapes at sea level and 21oC. When it reaches an altitude of 3000 m, where the temperature is 3oC and the pressure only 0.6 atm, what is the ratio of the initial volume to the final volume?
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Two 2.0-cm-diameter insulating spheres have a 7.00 cm space between them. One sphere is charged to + 13.0 nC, the other to - 20.0 nC. What is the electric field strength at the midpoint between the two spheres? (N/C)
The process of osmoregulation is used to control the solute concentration and water balance of fluids which bathe the body cells (eg. interstitial fluid). Considering the basic model for excretion in animals, which of the following processes does not
What are the block's oscillation frequency? What is the block's distance from equilibrium when the speed is 36 cm/s? What is the block's position at t=1.0 s?
What were the two most important sources of income for the English East India Company?
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The interference pattern has its first dark fringe (the one adjacent to the central maximum) at the same angle. What is the distance between the centers of the two slits?
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Check this speed with the result you get from simple conservation of energy considerations. Consider the Earth's mass density to be uniform throughout. [Hint: recall Gauss' Law as it applies to the gravitational field of a spherically symmetric ma
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