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A baseball weighing 150 g is moving in the negative x-direction toward a batter with an initial speed 40 m/s. The batter hits it back to move in the postivie x-direction with speed 36 m/s.
A) Calculate the impulse experienced by the baseball?
B) If the baseball had contact with the bat for 38 ms, what was the magnitude of the force exerted by the bat?
The electric potential inside a conducting sphere is 245V, and a distance d = 32.0cm from the surface of the sphere, the potential is 175V. Calculate (a) the radius of the sphere and (b) the charge on the sphere.
If the induced voltage is 0.5 V, as B field is decreasing at a rate of 0.5 T/s in a loop. Calculate the area of the loop
A charged capacitor is connected to an inductor. At time t=0 the charge on the capacitor is Q= 6uC. What is the amplitude of the current at that same instant
A 65 kg skateboarder comes over the top of a hill at 5.0 m/s and reaches 10 m/s at the bottom. Find the total work done on the skateboarder
A trombone has an effective length of 160 cm and the speed of sound in air is 345 m/s. Notes are selected by moving a U-shaped tube in or out to change effective length of the trombone.
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
An electron acquires 5.95×10?16J of kinetic energy when it is accelerated by an electric field from plate A to plate B
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF, What is the voltage of the second defibrillator
If the two halves of the log only separate by a distance of 0.05m while the wedge travels 0.2m into the log, how much force is the wedge exerting on the two halves of the log to rip them apart.
A friend tells you that when he takes off his eyeglasses and holds them 18cm above a printed page, what is the focal length of your friend's glasses
A proton moves at 7.50 X 10 ^7 m/s, perpendicular to a magnetic field. The field causes the proton to travel in a circular path of radius 0.800m.
Suppose that all movement occurs in a straight line up and down along the y axis. Find out the muzzle velocity of the ball (i.e., the velocity of the ball at spring's equilibrium position).
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