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A tank of helium gas used to inflate toy balloons is at a pressureof 15.5x108 Pa and a temjperature of 293K. The tank'svolume is 0.020 m3. How large a balloon would it fill at1.00 atmoshpere and 323K?
the microwave radiation left over from the big bang explosion of the universe has an average energy density of 3.95
High-voltage power lines are a familiar sight throughout the country, What is the resistance of 15 kilometers of this wire
A 2m3 balloon filled with helium at sea level climbs to 10,000 m. The temperature at sea-level is 20C, What is the volume of the balloon at 10,000 m
suppose a high voltage dc generator produces a potential difference of 75. kv across an air gap distance of 1.25 cm.
a small negatively charged particle has a charge of 1.33e-6 c and a mass of 8 mg. it moves from point a where the
A transmission line 200 km long has a resistance of 10 ? and carries a current of 1200 A. What is the potential difference between two pilons separated by 200 m
A gremlin is a tiny mythical creature often blamed for mechanical failures. Suppose for a moment that a shrewd physicist catches one such gremlin and makes it work for her instead of against her.
A battery with an emf of 12.0 V shows a terminal voltage of 11.0V when operating in a circuit with two lightbulbs rated, What is the battery's internal resistance
A 0.15 kg baseball collides with a 1.0kg bat. The ball has a velocity of 40 m/s immediately prior to the collision. Estimate how fast the baseball is moving as it leaves the bat following the collision
q1. a superball with a mass of 62.50 g is dropped from a height of 1.70 m. it rebounds to a height of 1.47 m.what is
A nurse applies a force of 4.40 N to the piston of a syringe. Thepiston has an area of 5.00 x 10^-5 m^2. What is the pressure increase in the fluid within the syringe
An electron is accelerated from rest through through a potential difference of 35,000 V. What is the electron's kinetic energy in Joules
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