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A ball of mass m = 0.490 kg is dropped near the surface of the Earth. However, there exists an air resistance F = −βv, where β = 0.700 N · s/m. After a long time, the ball approaches a speed v. What is this speed?
Assume a point charge Q1 is at x=0 and a charge Q2 is at x= d. What is the relationship between these charges if the resulting electric field is zero at the following points:
a) x= d/2; b) x= 2d; c) x= -d/2
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A tiny ball weighs 0.0055 kg and carries a charge of of 3.25 x10-6 C. What electric field (magnitude and direction) is needed for the ball to remain suspended in air?
Two particles A and B are released from rest, having equal charges of -5 x10-4 and initially separated from each other by 0.25m. The masses of particles A and B are 5.25x10-6 kg and 3.75x10-6 kg respectively. Find the magnitude of the initial accelerations of particles A and B.
Find the electrostatic force between charges of +2.0C and +5.0 separated by a distance of 75m in a vacuum
The equation y = 5Sin (3x -4t), where y is in millimetres, x is in metres and t is in seconds represents a wave motion. Determine the frequency of the wave
The most common isotope of hydrogen contains a proton and an electron separated by about 5.0 x 10-11 m. The mass of a proton is approximately 1.7 x 10-27 kg. The mass of the electron is approximately 9.0 x 10-31 kg.
once kg of air expand at a constant temperature from a pressure of 820 kpa and a volume of 3 m³ to a pressure of 220 kpa. determine. a. change of Internal Energy b. change of Enthalpy
Find the electrostatic force between charges of -2.0 C and +5.0C separated by a distance of 75m in a vacuum.
