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Interactive LearningWare 18.2 provides one approach to solving problems such as this one. The drawing shows three point charges fixed in place. The charge at the coordinate origin has a value of q1 = +11.6C; the other two have identical magnitudes, but opposite signs: q2 = -4.87C and q3 = +4.87C.
(a) Determine the net force exerted on q1 by the other two charges.
(b) If q1 had a mass of 1.50 g and it were free to move, what would be its acceleration?
What is the mass of the block on the left. Find this angle of the thread.
A soccer player 'heads' the size 5 ball deflecting it by 46.0°, and keeps its speed of 15.90 m/s constant. A size 5 ball has a mass of approximately 0.421 kg. What is the magnitude of the impulse which the player must impart to the ball.
Sit on a rotating chair. Slowly twist your body in one direction and after that rapidly twist it in the other. What is going to happen? Is angular momentum conserved and if not why.
A lamp (R=150), an electric heater (R=23), and a fan (R=50) are connected in parallel across a123V line. calculate the power is expended in the heater
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. As a sedan passes by the first cruiser, its speed is measured to be 99.7 mph.
The Big Bang theory states that the beginning of the universe was accompanied by a huge burst of photons. Calculate the peak wavelength of this radiation
A protostar has a temperature of 3000 K,radius of 2*10^8 km at stage 4. At stage 6, Calculate the star's change in absolute magnitude as it evolves from stage 4 to stage 6
If the rope tension is 120 N, and if the rope does 2500 J of work on the box, what angle theta does the rope make with the horizontal
Thus, to eliminate the difficulties with motion sickness, designers must choose the distance between the astronaut's feet and the axis about which the space station rotates to be greater than a certain least value. What is this least value.
A 80.5 kg firefighter slides down a pole while a constant frictional force of 300 N retards her motion. Find the firefighter's speed just before she collides with the platform
A spring with spring constant 19 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 2.5 and released. The ball makes 33 oscillations in 15 seconds. What is its utmost speed.
A block of ice starts from rest on an apartment building's roof, which slopes at 41° below the horizontal. How far from the building does the block strike the ground
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