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What is the magnitude of the free-fall acceleration of a ball (mass m) due to the Earth's gravity at an altitude of 7R, where R is the radius of the Earth?
If that angular acceleration is 1.8rad/s^2, illustrate what is the total momentum of inertia about the axis of you and the chair?
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
A futuristic design for a car is to have a large disk -like flywheel within the car storing kinetic energy. find the maximum attainable speed of the car
The electric field between the plates of a paper-separated (K=3.75) capacitor is 8.19×104. determine the area of each plate
A gate in an irrigation canal is in the form of a semi-circle with radius of 4m (straight side on top). Find the hydrostatic force on the gate
A copper (cu) penny has a mass of 3.11 g. The molar mass of copper is 63.5 g/mol. How many atoms of Cu are there ? what fraction of the electrons have been removed
The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 38Nm. With what force must you pull
Two masses of 27 kg and 18 kg are suspended by a pulley that has a radius of 12 cm and a mass of 9 kg, Determine the speeds of the two masses as they pass each other
A 30.0-kg block is resting on a flat horizontal table. On top of this block is resting a 15.0-kg block, to which a horizontal spring is attached. determine the amount by which the spring is compressed
What is the intensity of the sound waves at point.
A coil of 57. turns of wire has a diameter of 9.5 cm and carries 7.2 Amperes. How many Gauss is that
An X-ray tube gives electrons, which start at rest, a constant acceleration over a distance of 23cm. If their final speed is 1.3 x 107 m/s, what are the time they spend accelerating
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