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A young girl spins a hula hoop of mass 0.74 kg and radius 0.73 m around her waist. Assuming that the girl's waist is much smaller that the hoop, use the parallel axis theorem to compute the rotational inertia of the hula hoop about its axis of rotation.
A. 1.2 kg m^2
B. 1.6 kg m^2
C. 0.39 kg m^2
D. 0.79 kg m^2
A 1100 kg cannon, which fires a 50 kg shell witha speed of 506 m/s relative to the muzzle, is set at anelevation angle of 39° above the horizontal. At what angle with the ground is the shell projected
A reservoir has an area of 45000 sq.ft and a uniform thickness of 10 meters. Determine the pore volume of the reservoir
What is the new resistance level of a copper wire if the length is changed from 200ft to 100yd, the area is changed from 40,000CM to 0.04 in.^2
A rolling ball has the initial velocity of 1.6m/s with fix acceleration of 0.33m/s2, obtain the final velocity after 3.6second? Obtain how far does the ball travel
An engineer is designing a runway for a new airport. Of the planes which will use the airport, the lowest acceleration rate will be 3 m/s2. Assuming the minimum acceleration, what is the minimum allowed length for the runway
a 2.60microf capacitor is charged by a 12.0-v battery. it is disconnected from the battery and then connected to an
A fly sits on a potter's wheel .30 m from its axle. The wheel's rotational speed decreases from 4.0 rad/s to 2.0 rad/s in 5.0 s. Determine the wheel's average rotational acceleration
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. What is the pilot's apparent weight at the lowest point if his true weight is 160 lb
Compare the distance he wanted to cover in the real world with the "theoretical" distance that could be covered if there was no air resistance - If the engine was close to 100% efficient how much petrol would be used to overcome air resistance duri..
A uniform diving board, 12m long and 20kg mass is placed on a platform. How far can a 60kg person walk down the board from the edge of the platform without board tipping over.
A 70 kg window cleaner uses a 20 kg ladder that is 5.4 mlong. He places one end on the ground 2.2m from a wall, What is the angle of this force on the ladder
The largest-caliber antiaircraft gun operated by the German air force during World War II was the 12.8 cm Flak 40. What propulsive force was necessary to attain the muzzle speed
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