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A 0.165-{\rm kg} baseball pitchedhorizontally at 40.0 {\rm m/s} strikes a bat and ispopped straight up to a height of 30.0 {\rm m}.
a) If the contact time between bat and ball is 3.0 {\rm ms}, calculate the magnitude ofthe average force between the ball and bat during contact.b) Find the direction of the average force on the ball.
A tank circuit in a radio transmitter is aseries RCL circuit connected to an antenna. The antenna broadcastsradio signals at the resonant frequency of the tank circuit.
Each plate of a parallel-plate capacitor is a square of side 3.17 cm and the plates are separated by 0.551 mm. Find the electric field strength inside the capacitor
a person with a mass of 50 kg is standing on a scale in an elevator that is accelerating upwards at a rate of 3.2 ms2.
Nichrome wire of cross-sectional radius 0.780 mm is to be used in winding a heating coil. find the length (in meters) of wire needed to wind the coil
A Coast Guard cutter detects an unidentified ship at a distance of 22.0 km in the direction 15.0° east of north. Find the time required for the cutter to intercept the ship
A 180.0- g copper block at 90.0 oC is dropped into an aluminum calorimeter cup initially at 22.0 oC. What is the final temperature of the system
three children are throwing snowballs at each other. child a throws a snowball with a horizontal velocity v. if the
Two slits are separated by .1 mm. Planar light incident on them produces a diffraction pattern on a board 1.35 m away, estimate the wavelength of light
A boat whose speed in still water is 8 m/s, is directed across a river with a current of 6.0m/s. What is the speed of the boat as it crosses the river?
A constant horizontal force moves a 50 kg trunk 3.0 m up a 29° incline at constant speed. What is the work done by the applied force
An iron wire with a diameter of 1.2 mm has a uniform electric field of 0.35 V/m imposed along its entire length. What is the current density in the wire
Consider a straight wire with a radius A, carrying a current I, Use Ampere's law to calculate the magnetic field around the wire as a function of r, the distance from the center
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