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Questions: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 22.0 m/s. In the process, he moves his hand through a distance of 1.30 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.
A person of mass 75kg hauls himself off the floor up a vertical rope with an acceleration of 0.68m/s. calculate the tension in the rope
Suppose 1.00kg of water at 100 degrees Celsius is mixed with 1.00kg of water at 0 degrees Celsius. What is the total charge in entropy of the mixture
In Mexico, a courageous diver runs horizontally off the edge of a sea side cliff 48.8 m above the sea (about six stories high). Calculate her speed and direction angle of her velocity as she hits the water(or rocks)
A Coast Guard cutter detects an unidentified ship at a distance of 20.2 km in the direction 16.7° east of north. The ship is traveling at 24 km/h on a course at 40.1° east of north. The Coast Guard wishes to send a speedboat to intercept the vesse..
Suppose the speed of light were only 3000 m/s. A jet fighter moving toward a target on the ground at 600 m/s shoots bullets, What are the bullets' velocity relative to the target
A 20.0micro F capacitor is charged by a 155.0-V power supply, then disconnected from the power and connected in series with a 0.280-mH inductor, Calculate the oscillation frequency of the circuit
For a short time, the path of the plane is described by If the plane is rising with a constant velocity of 10 m/s, determine the magnitudes of the velocity and acceleration
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. find the tension in the tightrope
What is the total work W_fric completed on the block by the force of friction as the block moves a distance 8 rm m up the incline.
What is the formula for the acceleration a of the cart in terms of the cart's mass M, the hanger's mass m, and the acceleration of gravity g?
A square loop of wire has sides of length 3 cm. A magnetic field points out of the screen; its magnitude is B = 3.0t2y, What is the emf around the square at t = 2.00 s
A block of mass m=7.10 kg slides down a 30 degree incline which is 3.60 m high. Determine the speeds of the two blocks after the collision
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