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Figure shows an exploded view of an airplane engine, reduction gear, and pro- peller. The engine and propeller rotate clockwise, viewed from the propeller end. The reduction gear housing is bolted to the engine housing through the bolt holes shown. Neglect friction losses in the reduction gear. When the engine develops 150 hp at 3600 rpm,
(a) What is the direction and magnitude of the torque applied to the engine housing by the reduction gear housing?
(b) What is the magnitude and direction of the torque reaction tending to rotate (roll) the aircraft?
(c) What is an advantage of using opposite-rotating engines with twin-engine propeller-driven aircraft?
A certain isotope of technetium has a half-life of 6.0 hours. Technetium is used in various medical procedures such as stress tests on the heart. What fraction of an initial dose remains in the body 24 hours after the initial dose?
An electromagnetic wave in vacuum has an electric field amplitude of 220 V/m. Calculate the amplitude of the corresponding magnetic field
To make an order-of-magnitude estimate of the energy level spacings in the nucleus, Calculate the energy of the ground state
A chair of weight 130 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.00 N directed at the angle of 35.0 degrees below the horizontal and the chair slides along the floor. Using Newton's law..
What is the wavelength for sounds of 20 Hz and 20 kHz in air? (Use 343 m/s for the speed of sound in air). How many times does your ear-drum vibate back and forth per second for each of these sounds?
Express the time in terms of given quantities. T catch = ? How far from Car B's starting line will the cars be when Car B passes Car A? Express your answer in terms of known quantities.
A square coil containing 950 loops with a side length of 10 cm is turning in a uniform magnetic field. It is experimentally found that turning the loop at a constant speed with a period of 0.12 s produces a maximum voltage of 0.065 V. Can you writ..
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -95?C. By how much does her mass increase
The starter motor of a car engine draws a current of 200A from the battery. The copper wire to the motor is 4.60mm in diameter and 1.2 m long. How much charge passes through the starter motor
Estimate the average force exerted by a shot-putter on a 7kg shot if the shot is moved through a distance of 2.6m and is released with a speed of 10m/s
in a television set the power needed to operate the picture tube is 95 w and is derived from the secondary coil of a
What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 30 km/h and the coefficient of static friction between tires and track is 0.21
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