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What is the maximum weight that a balloon full with 1.00 m3 of helium can lift in air? Suppose that the density of air is 1.20 kg/m3 and that of helium is 0.177 kg/m3. Neglect the mass of the balloon.
A cylindrical vessel 16 feet in diameter and 15 in height is constructed to withstand a maximum internalpressure of 500 psia. What is the maximum weight of nitrogen
several students are riding in bumper cars at an amusement park. the combined mass ofcar a and its occupant is 250 kg.
A man runs at a velocity of 4.5 m/s frao 15.0 min. When going up an increasingly steep hill, How far did he run
A block of cheese has a mass of 20 kg is at rest on the floor. Thisblock is then pushed by a horizontal force of 8 N across the floor.The final speed is 2 m/s. Determine the distance the box was pushed.
a rock is thrown horizontally with a speed of 17 ms from a vertical cliff of height 30 m.a how long does it take to
A force F applied to an object of mass m1 produces the acceleration of 3.10 m/s2. The same force applied to a second object of mass m2 produces an acceleration of 1.90 m/s2.
A flywheel comprises a uniform circular disk with a moment of inertia of 5.70×101 Kg m2. What energy (in Joules) must this force dissipate to stop the wheel
A small metal sphere of mass 6.9 g and charge 5.9 μC is firedwith an initial speed of 4.9 m/s directly toward the center of asecond metal sphere carrying charge 7.2 μC. This second sphereis held fixed.
Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity.
Hurricane winds of 95 m/h are blowing over the flat roof of a well sealed house. What is the difference in air pressure between the inside and outside of the house
A tank circuit in a radio transmitter is aseries RCL circuit connected to an antenna. The antenna broadcastsradio signals at the resonant frequency of the tank circuit.
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration
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