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A balloon whose volume is 500m3 is to be filledwith hydrogen at atmospheric pressure. If the hydrogen isstored in cylinders having a volume of 2.50 m3 at anabsolute pressure of 35X105 Pa. How many cylinders are required? Temperature of hydrogen is constant.
A girl floats in a lake with 97 percent of her body beneaththe water. What is her mass density
Do you expect the mass to have SHM?
Water at a pressure of 3.2 atm at street level flows into an office building at a speed of 0.5 m/s through a pipe 5.6 cm in diameter. Calculate the water pressure in such a pipe on the top floor
Use the simulation in the cannon interactive in this section to answer the following questions. (a) Does cannonball's horizontal velocity change as it moves through the air? (b) Does its vertical velocity change? (c) If you enhance the cannonball's h..
A spelunker is surveying a cave. She follows a passage that takes her a distance 189 straight west, then a distance 220 in a direction 45 east of south, after that a distance 280 at 30 east of north. After a fourth unmeasured displacement she find..
Two overlapping beams of light of different wavelength ?a = 840 nm and ?b = 460 nm co-propagate through air, What is the angle between the beams travelling through the material
A 9.10 kg board is wedged into a corner and held by a spring at a 50° angle, as the Illustrating shows. The spring has a spring constant of 196 N/m and is parallel to the floor.
A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. What volume of water per second leaks into the ship
A circuit containing a 7.6 H inductor has an alternating current supplied to it. If Irms is 5.6 A and Vp is 28 V, find the frequency of the signal
In a crash test, a 1100 kg car slams into a concrete wall at 17.1 m/s and comes to rest in 0.275 s. a)Find out the magnitude of the impulse delivered to the car.b) Find the average stopping force.
A spacecraft moving away from Earth emits a 4990 Hz signal. A scientist on Earth measures the signal to be 4989 Hz. What is the speed of the spacecraft relative to Earth
Bowling balls can be made from a variety of substances and are required to have a circumference of roughly 27.0 inches. calculate the thickness of the shell
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