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As a 1240-kg truck travels up a 15.4-m-high hill, the nonconservative forces of friction and the force generated by the engine do work on the truck. If the work done by friction is ?3.16 105 J and the work done by the engine is +6.39 105 J, determine the change in the truck's kinetic energy as it travels from the bottom of the hill to the top of the hill.
Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous planet varies linearly with the height of the atmosphere.
Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 363 km above the earth's surface, Find the orbital speed for satellite A and satellite B
Draw a picture of a polarized and unpolarized E-field (go ahead and just do it at one point in space using an arrow(s)). Polarized means that the E-field oscillates perpendicularly at a fixed orientation relative to the direction of propagation.
A block of weight W can slide on a horizontal surface. A force of W/n1 is applied to the right that causes the block to accelerate with acceleration equal to g/n2. g is the acceleration by reason of gravity. If the coefficient of kinetic friction is ..
A parallel-plate capacitor is constructed with circular plates of radius 5.5×10?2m . The plates are separated by 0.23mm, Find the value of the dielectric constant, ?.
Compute the average intensity
What minimum constant acceleration does this need if the aircraft is to be airborne after a takeoff run of 250 m.
The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region, assuming it's constant? -140 N/C 140 N/C -35 N/C 35 N/C 75 N/C.
For no apparent reason, a poodle is running at a constant speed of 4.40 {rm m/s} in a circle with radius 3.0 {rm m}. Let vec v_1 be the velocity vector at time t_1, and let vec v_2 be the velocity vector at time t_2.
Frames S and S' are moving relative to each other along the x and x' axes. They set their clocks to t = t' = 0 when their origins coincide, Compute the spacetime interval ?s between the events
What is the unknown charge at x = +0.19 m in micro-coulombs? If negative, indicate so with a negative sign, but omit a sign if positive.
A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater, What is the smallest radius of copper wire that can be used in the extension cord
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