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A baseball pitcher throws a baseball with a speed of 47 . In throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 , from behind the body to the point where it is released. Estimate the average acceleration of the ball during the throwing motion?
You are to program a robotic arm on the assembly line to move in a xy-plane. Its first displacement is; its second displacement is, of magnitude 6.51 and direction 62.7 measured in the sense from +x-axis toward -y-axis. The resultant of the two displ..
A rocket cruising past earth at 0.800c shoots a bullet out the back door, opposite the rocket's motion, at 0.900c relative to the rocket. What is the bullet's speed relative to the earth
A uniform disk of mass m=0.400 kg and radius R=20.0 cm is pinned to the wall near its rim. Find the angular frequency of oscillation if the disk is set swing back and forth
A bullet of mass 30 g collides completely inelastically with a ballistic pendulum of mass 2.5 kg. Calculate the velocity of the bullet right before it collides with the pendulum
An airplane propeller is rotating at 1250 rpm It takes 4.27×10^-3 s to turn through 32 degrees. At 201 rpm, what is the period of the propeller in seconds
The initial velocity of a car is vi=45km/hr in the positive x-direction. The final velocity of the car, vf is 66km/hr in a direction that points 75 (degrees) above the x-axis. Find the magnitude and direction of the change in velocity
A disk of radius 217 cm rotates about its axis. Points on the disk\'s rim undergo tangential acceleration of magnitude 2.31 m/s2. what is the tangential speed, v, of a point on the rim
What is the coefficient of kinetic friction between the table and floor.
In a model AC generator, a 503 turn rectangular coil 5.0 cm by 21 cm rotates at 120 rev/min in a uniform magnetic field of 0.59 T. What is the maximum emf induced in the coil
Find the de Broglie wavelength of an oxygen molecule of average kinetic energy in air at a temperature of 226.0 K
A sound pulse emitted underwater reflects off a school of fish and is detected at the same place 0.01 seconds later. How far away are the fish
A Carnot refrigerator extracts 30.0 kJ as heat during each cycle, operating with a coefficient of performance of 5.00. find the energy per cycle transferred as heat to the room
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