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A 65.0 kg base runner begins his slide into second base when moving at a speed of 4.2 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. Explain how much mechanical energy is lost due to friction acting on the runner? How far does he slide?
What is the capacitance of a pair of circular plates with a radius of 9.0cm separated by 3.2mm of mica?
What are the lowest and the highest frequencies. calculate the acceleration of the crate.
Vector A has a magnitude of 7m and makes an angle of 58o with the positive x axis. Vector B also has a magnitude of 7 m and is directed along negative x axis. Enter your answers in distance then angle (in degrees).
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
why the mass of the dishwater is large enough. If vector B is added to C = 2.0 ihat + 3.0 jhat, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of C. What is the magnitude of vector B.
Make use of 9.80 for the magnitude of the acceleration because of gravity.
Does the growth of a plant or animal violate the second low.
How several meters away is a cliff if an echo is heard 0.587 s after the original sound? Assume that sound traveled at 343 m/s on that day.
Water flows through a Venturi meter with a pipe diameter of 10.0 cm and a constriction diameter of 5.6 cm. The U-tube manometer is partially filled with mercury.
A girl is standing at the edge of the cliff 271 m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed of 6.17 m/s. a) how long does it take the rock to hit ground? b) What is the speed of the ro..
Two 10 cm long thin glass rods uniformly charged to + 10;{rm nC} are placed side by side, 4cm apart. What are the electric field strengths E_1, E_2, and E_3 at distances 1.0 cm, 2cm, and 3cm to the right of the rod on the left, along line connecti..
Hakeem throws a 10.50 g ball straight down from a height of 2m. The ball strikes the floor at a speed of 7m/s. What was the initial speed of the ball? Presume that air resistance is negligible.
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