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A batter hits a baseball m = 0.48 kg from rest with a force of F = 86 N, The ball is in contact with the bat for t = 0.26 s. It is observed that the ball leaves the bat with an angle of ? = 27 degrees with respect to the horizontal.
A. How long was the ball in the air if it hit from the top of a clif with a height of a clif with a height of h= 129
B. How far did he ball travel horizontally in meters?
A 1.36 103-kg car traveling initially with a speed of 20.0 m/s in an easterly direction crashes into the rear end of a 9.00 103-kg truck moving in the same direction at 15.0 m/s. How much mechanical energy is lost in the collision
A water slide launches a child horizontally above a swimming pool. How far from the launch point does the child land in the water
A certain superconducting magnet in the form of a solenoid of length 0.30 m can produce a magnetic field of 13.0 T in its core when its coils carry a current of 105 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find o..
A horizontal spring-mass system oscillates on a frictionless table. If the mass is 3.8 kg, the spring constant is 100 N/m, find the maximum extension of the spring
A silver coin lies on the bottom of a clear lake 5.5 m deep. The coin is 4 cm in diameter. What is the angle of refraction
A 22 child slides down a 2.4 -high playground slide. She starts from rest, and her speed at the bottom is 1.9 What is the change in thermal energy of the seat of her pants
The flux through a loop is given by ?m = (0.20t 2 - 0.58t) , where ?m is in webers and t is in seconds. Find the induced emf as a function of time
The period of oscillation of an object in a frictionless tunnel running through the Earth is 84.3 min. What is the time of oscillation of an object in a similar tunnel on the Moon.
After an afternoon party, a small cooler full of ice is dumped onto the hot ground and melts. If the cooler contained 7.20 kg of ice and the temperature of the ground was 40.5°C, calculate the energy that is required to melt all the ice at 0°C. Th..
At what angle should a curve of radius 155m be banked, so cars can travel safely at 26m/s without relying on friction.
for a particle in a one demention box, the ground state wave function is: psi=(2/L)^1/2 sin(piX/L), What is the probebility that the particle is in the right-hand half on the box
A wooden block weighing 7 N is at rest on top of a wooden desk. The coefficient of static friction between the block, Find the minimum horizontal force required to move the block
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