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An outfielder throws a1.91 kgbaseball at a speed of 68 m/s and an initial angle of54.6degrees. What is the kinetic energyof the ball at the highest point of its motion?
An L-R-C series circuit consists of a 2.50?F capacitor, a 5.50mH inductor, What is the maximum current through the capacitor
The barricade at the end of a subway line has a large spring designed to compress 2.00 m when stopping a 1.60 ? 105 kg train moving at 0.300 m/s. What speed would the train be going if it only compressed the spring 0.900 m
A hotel elevator ascends 160m with a maximum speed of 4.20 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. How long does it take to make the complete trip from bottom to top.
A block of mass m = 3.07 kg is attached to a spring (k = 29.3 N/m) by a rope that hangs over a pulley of mass M = 6.14 kg and radius R = 8.81 cm. find the maximum extension of the spring
A rod suspended on its end and acting as a physcial pendulum swings with a period of T=1.49 sec. What is the length of this physical pendulum
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.8×106 one at an angle 17 degrees west of north, What is the total work they do on the supertanker
A charge of -7.1 micro-Coulombs is placed at x = 0, y = 0. A charge of +18.7 micro-Coulombs is placed at x = 0, y = +30 cm. Another charge of +31.3 micro-Coulombs is placed at x = +31 cm, y = 0 cm.
The drawing shows four point charges. The value of q is 2.06 µC, and the distance d is 0.98 m. Find the total potential at the location P. Assume that the potential of a point charge is zero at infinity. 1 V
A 100 kg car travelling at 20 m/s collides with a 100 kg car traveling at 8 m/s in opposite direction, a) if the two cars stick together, what is their final velocity
describe how an electric current is generated and transported. assess the current state of our national grid in the
Illustrate what is the velocity of the second block after the bullet imbeds itself? (b) Find the ratio of the total kinetic energy after the collision to that before the collision.
A flight attendant pulls her 63N flight bag a distance of 308m along a level airport floor at a constant velocity. The force she exerts is 45N at an angle of 57° above horizontal. Find the work she does on flight bag.
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