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Aroldis Chapman throws a baseball towards a batter from a height of 2.3 m, the batter is 17.5m away from the release point. The initial velocity is directed 1.8 degrees below the horizontal. Ignore air resistance. (a) What must the initial speed of the ball be if the pitch is to arrive at the batter exactly 1.00 m above the ground? (b) How long does it take the ball to reach the batter? (c) If there were no gravity, at what angle would the pitch have to be thrown?
Find the work done by this force on the particle and the final speed of the particle as it moves along a path.
find the mass of Earth from the period T and the radius r of the Moon's orbit about the Earth. T=27.3 days and r=3.82E5 km. suppose the Moon orbits the center of Earth rather than the center of mass of the Earth-Moon system.
what is the absolute magnitude of the force on each charge?
Explain the velocity of two different objects: heavy rock & light feather. 1st, describe what happens when the two objects are dropped on Earth. 2nd, compare this to what happens on the Moon.
A dart is thrown horizontally toward the bull's-eye, point P on the (non-standard size) dart board in the figure, with an initial speed of 8.9 m/s. It hits at point Q on the rim, vertically below P 0.14 s later. What is the distance PQ? How far aw..
The bunchberry flower has the fastest-moving parts ever seen in a plant.at first , the stamen are held by the petals in a bent position, storing elastic energy like a coiled spring.
Four particles with masses 4 kg, 2 kg, 4 kg, and 2 kg are associated by rigid rods of negligible mass. The origin is centered on the mass in the lower left corner, and all the particles are located in Quadrant 1. The rectangle is 5 m wide and 4 m ..
Two negative chrges are placed on the x-axis. A charge of -11.4 micro coulmbs is placed at x=0cm and another charge of -5.4 m/C is placed at x=119cm. where on the x axis is the total field between the two charges zero? Answer in cm
A rectangular block of ice 14.0 m on each side and 1.4 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3.
An 10m, 210N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50° angle with the ground. How far up the ladder can an 850N person climb before ladder b..
The flywheel of an engine has a moment of inertia 3.00 {rm kg} cdot {rm m} ^ {2} about its rotation axis. What is its final kinetic energy.
Estimate the ball's rise in temperature.
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