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In the sum A + B = C, vector A has a magnitude of 11.0 m and is angled 33.5° counterclockwise from the +x direction, and vector C has a magnitude of 15.0 m and is angled 21.5° counterclockwise from the -x direction. What are the magnitude and the angle (relative to +x) of B?
A sports car moving at constant speed travels 90 m in 4.9s. If it then brakes and comes to a stop in 4s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be direction of travel.)
A 20 Kg loudspeaker is suspended 2.0 m below the ceilling by two cables that are each 30' from vertical . What is the tension in the cables
on planet x the alien residents use a temperature scale in which they define 0 degrees x to be the melting point of
A heavy crate is attached to the wall by a light rope. Another rope hangs off the opposite edge of the box. If you slowly increase the force on the free rope by pulling on it in a horizontal direction, which rope will break? Ignore friction and th..
A 10 μF capacitor is charged to 15 V. It is next connected in series with an uncharged 5.00-μF capacitor. The series combination is finally connected across a 50.0-V battery, as diagrammed. Find out the new potential differences across the 5-μF an..
A 66 {rm kg} skier speeds down a trail, as shown in the figure . The surface is smooth and inclined at the angle of 22 ^circ with the horizontal. Find the magnitude of the net force acting on the skier.
A student (m= 75kg) falls freely from rest and strikes the ground. During the collision with ground, he comes to rest in a time of 0.040s.
A 4.47 m long pole stands vertically in a lake having a depth of 2.22 m. while the sun is 62.6 degrees above the horizon, find the length of the pole's shadow on the bottom of the lake.
A body cools from 50 degre celcious to 49 degree celcious in 5 seconds. Hw long would it take to cool from 40 degree celcious to 39 degree celcious.
an electron enters a region of space containing a uniform 0.0000163-t magnetic field. its speed is 109 ms and it enters
To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. What was the raven's speed right after the collision
A high speed photograph of club hitting a golf ball is shown in the figure below. find the average force exerted on the ball by the club
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