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A capacitor with air between its plates is charged to 80 V and then disconnected from the battery. When a piece of glass is placed between the plates, the voltage across the capacitor drops to 28 V. What is the dielectric constant of this glass? Assume the glass completely ?lls the space between the plates.
The rectangle shown in Figure P3.57 has sides parallel to the x and y axes. Find the perimeter of the rectangle
It collides with a 10,000 kg railway car resting at the bottom of the track with its brakes off. The two cars couple together and roll up the track to a height of h. find out h.
A volume of 2000 cm^3 of carbon dioxide gas at normal pressure and 20 C is compressed isothermally into a 2 cm^3 container, what is the final pressure inside the container
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 9 A, and that of the vacuum cleaner is 5.5 A. Determine the power consumed by the vacuum cleaner.
A 564 Hz sound wave travels through a substance. What is the speed of sound in the substance
Consider two particles with masses that differ by a factor of 325. what is the ratio of their kinetic energies
a solid aluminum ingot weighs 89n in the air. the ignot is suspended from a rope and totally immersed inn water. what is the tension in the rope
A weightlifter bench-presses a 170.0 kg barbell from his chest to a height equal the length of his arms 0.750 m. What is the potential energy of the barbell relative to the weightlifter\'s chest after he lifts the barbell
Light is refracted through diamond from air. If the angle of incidence is 30 °, what is the speed of light in diamond
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 14.9 rad/s. What is the angular speed of the wheel at the higher temperature
How long can craft hover over the moon surface Contract between Einstein's calculations and observed precession
Two objects of the same mass, m = 1.00 kg, are projected towards each other. The first object initially has velocity (20.0m/s)i^. What is the change in kinetic energy in the collision
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