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At takeoff a commercial jet has a 55.0 m/s speed. Its tires have a diameter of 0.550 m.
(a) At how many rpm are the tires rotating? rpm
(b) What is the centripetal acceleration at the edge of the tire? m/s2
(c) With what force must a determined 10-15 kg bacterium cling to the rim? N
(d) Take the ratio of this force to the bacterium's weight. (force from part (c) / bacterium's weight)
The center of gravity of a 5 kg lower leg is 18 cm from the knee. When pivoted at the knee and allowed to swing, Find the moment of inertia of the lower leg
A current of 6.0 A is drawn from the battery in the figure shown below. How much is the voltage of the battery Vab in V
The carbon dioxide in a nuclear reactor is maintained at 40 bar (gauge) and 70 deg C. Estimate its density, specific weight and relative density.
An athlete catches a ball traveling at 20 m/s with her hands. Between the time she makes contact with the ball and the time the ball stops moving, What is the mass in kg of the ball
A 32.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 24.00 m. When she is partway down the slide, at a height h2 of 15.00 m, she is moving at a speed of 8.80 m/s. Compute the mechanical energy lost due to f..
After solving a difficult physics problem, an excited student throws his book straight up. It leaves his hand at 3.9 m/s from 1.5 m above the ground.
It is fairly easy to strip the two electrons off a helium atom, leaving a bare nucleus of two neutrons and two protons. What is the necessary voltage difference
An asteroid orbiting the Sun has a mass of 4.00Ã?1016 kg. At a particular instant, How far is the asteroid from the Sun
An equilateral triangle 10 m on a side has a 17 kg spheres whose enters are at each corner of the triangle. A spherical mass each has a radius of 0.5 m. if balls are released from rest, what speed will they have when they collide at the center of the..
A speaker generating a tone at 348 Hertz is stationary. A person is moving toward the speaker with a speed of 32 meter per second. Find the frequency of the tone perceived by the person
What is the final tempearture when a 3.0 kg gold bar at 99 degrees C is dropped into 0.22 kg of water at 25 degrees C
A wheel rotating with a constant angular acceleration turns through20 revolutions during a 3 s time interval. Its angularvelocity at the end of this interval is 12 rad / s. What is the angular acceleration of the wheel? Note that the initialangular v..
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