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A track is going down the air track with a photo gate near the end of the track. Find by what factor should the velocity of an object change in order for its kinetic energy to triple?
instructions read the problems carefully and answer all the questions in each problem. you are allowed to use three a4
A person walks first at a constant speed of 5.10 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.95 m/s. (a) What is her average speed over the entire trip? (b) What is her average veloci..
A helium-neon laser beam has a wavelength of 633 nm in air. What is the wavelength of the light in that liquid
A very hard rubber ball (m = 0.7 kg) is falling vertically at 9 m/s just before it bounces on the floor. find the average force exerted by the floor on the ball
earth's radius is 6.38x10^6 m, and it completes one revolution every day. What is the tangential speed of a person standing on the on the equator
If the car starts at height h= 3.00 R and the radius is R_1 = 24.0 m, compute the radial acceleration of the passengers while the car is at point C, which is at the end of a horizontal diameter.
A cart on a horizontal, linear track has a fan attached to it. The cart is positioned at one end of the track, and the fan is turned on. Find the net force exerted on the cart-fan combination
Three equal point charges, each with charge 1.50, are placed at the vertices of an equilateral triangle whose sides are of length 0.550. What is the electric potential energy of the system? (Take as zero the potential energy of the three charges w..
A 1 C charge is 15 meter from a second charge, then the force between then is 1 Newton, obtain the magnitude on the second charge
Consider a square loop of wire (sides of 0.25 m) with a resistor included. A bar magnet with the north end up front is approaching the closed loop and thus induces a current. what is the rate of energy dissipation across the resistor
a lens that has a focal length of 3.99 cm is used as a magnifying glass.a to obtain maximum magnification and an image
A gasoline engine absorbs 4190 J of heat and performs 3170 J of mechanical work for each turn of the engine shaft
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