How many electrons would have to be placed on sphere
A metal sphere of radius 5.00 cm is initially uncharged. How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.61 105 N/C at a point 7.82 cm from the center of the sphere?
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The mean distance from the center of the earth to the center of the moon is rem = 3.84 × 108 m. The mass of the earth is me = 5.98 × 1024 kg and the mass of the moon is mm = 7.34 × 1022 kg. The mean radius of the earth is re = 6.
The average density of the material in intergalactic space is approximately 2.5 × 10^-27 kg/m^3. What is the volume of a lead sample, = 11 300 kg/m^3, that has the same mass as 8.0 × 10^24 m^3 of intergalactic space?
A football is thrown horizontally with an initial velocity of (16.4 m/s). Find the velocity vector of the ball 1.89 s after it is thrown.
A person who walks for exercise produces the position-time graph shown. Calculate the average velocity, including sign, for (a) segment A, (b) segment B, (c) segment C, and (d) segment D
How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.61 105 N/C at a point 7.82 cm from the center of the sphere?
Car racers lower their cars closer to the ground as a matter of style. James wants to lower his car by replacing all four of his original coil springs with new ones offered as an option by the car manufacturer.* In science, we try to represent com
When the balloon is 3.09 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?
A monochromatic light is incident on the surface of a metal with work function W = 2.2 eV. If a stopping potential V = - 2 V is required to make the photocurrent zero, what is the wavelength of light in nm?
A hare and a tortoise compete in a race over a straight course 2.25 km long. How far is the tortoise from the finish line when the hare resumes the race?
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