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Force of a Baseball Swing. A baseball has mass 0.145 kg.
A) If the velocity of a pitched ball has a magnitude of 45.0 m/s and the batted ball's velocity is 55.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball.
B) Find the magnitude of the impulse applied to it by the bat.
C) If the ball remains in contact with the bat for 2.00 ms, find the magnitude of the average force applied by the bat.
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
A step-up transformer for long-range transmission of electric power is used to create a potential difference of 1.0921 x 10^5 V across the secondary. How many turns are in the primary
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp.
A block of mass M=0.986kg is floating stationary in a beaker of water. A string connected to the bottom of the beaker holds the block in place. find the direction of the buoyant force acting on the block
A 196.3 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. The force keeping the satellite in orbit is 40.1 N
A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below, Find the magnitude of the net force exerted by the wire on the crooked tooth
Using your value for n, find the speed of light inside the lucite rectangle. what will be the wavelength of the light inside the material
q.water flows over a dam at the rate of 670 and falls vertically 78 before striking the turbine blades.estimate the
A sodium atom (Z = 11) contains 11 protons in its nucleus. Strictly speaking, the Bohr model does not apply, determine the corresponding radius r of the outermost Bohr orbit
What is torque exerted by the fish about an axis
A block of mass 6 kg, which has an initial speed of 3 m/s at time t = 0, slides on a horizontal surface. obtain the magnitude of the acceleration of the block
In a certain compound microscope, the object is 9.0 mm from the objective. What overall magnification is produced
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