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A helium balloon lifts a basket and cargo weighing 1500. N understandard conditions. What is the minimun volume of the balloon? Use1.29 kg/m3 for density of air and 0.178 kg/m3 for density of helium.
Direction of the surface winds What is the expected composition
a diver springs upward from a board that is 3.17 meters above the water. at the instant she contacts the water her
An inclined plane is sliding, and accelerating, on a horizontal frictionless surface. What is minimum acceleration of the inclined plane
A 1N apple which is 5 m from the ground breaks from its stem and falls to the ground. When it has fallen a distance of 2 meters, calculate its mechanical energy relative to the ground
A wire loop bent into the shape of a square with 1.50 m sides is centered on the origin of the xy-plane. what current is present in the square wire
A 260 km long-high voltage transmission line 2.0 cm in diamter carries a steady current of 910A. If the conductor is copper with a free charge density of 8.8x10^28 electroncs per cubic meter, how many does it take one electron to travel the full ..
A jet of water squirts out horizontally from a hole near the bottom of the tank, What is the height, h, of the water level in the tank
A water bed has dimensions of 1.83 m x 2.13 m x 0.229 m. The floorof the bedroom will tolerate an additional weight of no more than6660 N. Find the weight of the water in the bed to determine whether it should be purchased.
A container holds a gas consisting of 1.05 moles of oxygenmolecules. One in a million of these molecules has lost a singleelectron. What is the net charge of the gas
A rocket reaches Low Earth Orbit of 300km above ground in 6 minutes. Estimate average acceleration of the rocket. how long would it take it to reach the Moon
Clarisse invests $61500 in money-market accounts at three different banks. Bank A pays 2% interest per year, bank B pays 2.5%, How much did she invest in each bank
Pilots can be tested for the stress of flying high-speed jets in a whirling "human centrifuge" which takes 1.0 min to turn through 20 complete revolutions before reaching its final speed. what was its final speed in rpm
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