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Just before a baseball is hit by a bat, it has a velocity of 30 m/s, 15A??o below the +x axis. After it is hit by the bat, it has a velocity of 60 m/s, 30A??o above the -x axis. If the bat is in contact with the ball for 4 ms, what is the magnitude of the average acceleration of the ball while in contact with the bat? Please show the work that leads to the answer.
An object is placed 6 cm from a convex spherical mirror by a focal length of 3 cm. Estimate where the image is located and what its characteristics are. Where is the image located? -----cm Is it real or virtual? Is it upright or inverted?
A set of crash tests consists of running a test car moving at a speed of 13.0 m/s (28.6 m/h) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
An electron is accelerated through 2450 V from rest and then enters a region wherethere is a uniform 1.80 T magneticfield. What are the maximum and minimum magnitudes of the magentic force acting on this electron?
A beam of light is incident from air onto a flat piece ofpolystyrene at an angle of 52^{\circ} relative to a normal to the surface. What angle does the refracted ray make withthe plane of the surface?
aircraft has cross section of 710 m^2, what percentage of radiated energy will be detected
A satellite operates at an altitude of 20,200 km and utilizes communication frequencies of1575.42 MHz. Find the gravitational frequency change by respect to Earth.
a parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 3.90 and whose
A boat with an engine speed of 7m/s directs its motion straight across a river that is flowing south at 4.0m/s. What are the resultant speed and direction of the boat
A 2.0-nC point charge is located at the origin in the xy-plane. What is the magnitude of the electric field at the coordinates (0.32 m, 0.40 m)
Two particles of equal but unknown charge are held 45 cm apart. If their electrostatic repulsion is 2.2 X 10^5 Newtons, what is the magnitude of their charge
The average speed of blood in the aorta is 0.314 m/s and the radius of the aorta is 1.05 cm. What is the approximate average speed of the blood flow in the capillaries
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 5.20 m/s, Find the final velocities of the blocks
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