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Suppose the end of your finger is charged.
A.) Estimate the breakdown voltage in the air for your finger
B.) About what surface charge density would have to be on yourfinger at this voltage
A negative charge (-q) with a mass of 0.29 kg is dangling vertically on a string. Directly below this charge, is a charge with same amount of charge, but with the opposite sign (+q). When it is located 22.74 cm below the charge on the string, the ..
What are the x and y components of the shell. What is the acceleration of the two blocks, in meters per second squared.
A 116 g Frisbee is 28 cm in diameter and has about half its mass spread uniformly in a disk, and the other half concentrated in the rim. What is the magnitude of the torque, assumed constant, that the student applies
Two people stand 3 m away from a large plane mirror and spaced 3.8 m apart in a dark room. At what angle of incidence should one of them shine a flashlight on mirror so that the reflected beam directly strikes the other person.
A 770 kg car moving at 21 m/s brakes to a stop. The brakes contain about 15 kg of iron, which absorbs the energy. What is the increase in temperature of the brakes.
Compare the gravitational lens to the one found in a telescope.
A 450 N ladder rests against a smooth wall, What is the friction force on the ladder at its base
A certain airplane has a speed of 250.0 km/h and is diving at an angle of 30.0° below the horizontal when the pilot releases a radar decoy. The horizontal distance between the release point and the point where the decoy strikes the ground is 700 m..
The compound gear to the right is located inside a truck, whose engine rotates the driving gear with a torque of 816 N·m. find the moments of inertia of both the large and small gears
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.6 m radius and is 1.2 m high. The walls are 1.0 cm thick.
A unit of area, often used in measuring land areas, is the "hectare", defined as 104m2. An open-pit coal mine consumes 66hectares of land, down to a depth of 23m, each year. What volume of earth, in cubic kilometers, is removed in this time.
A satellite orbiting the moon very near the surface has a period of 110 min, What is the free-fall acceleration on the surface of the moon in SI units
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