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Q. A baseball pitcher throws a fastball at a speed of 45.00m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 4.0 m. compute the acceleration; assume that it is constant and uniform.
When Capacitor C1 having voltage V is connected with another capacitor C2 having zero charge in parallel with C1 what would be the dissipated energy.
The quantity of charge q (in coulombs) that has passed through a surface of area 2.10 cm2 varies with time according to equation q = 7t3 + 5t + 6, where t is in seconds.
Calculate the direction, magnitude and line of action of the vertical and horizontal components of hydrostatic force acting on a surface.
A rifle with a barrel length of 62 cm fires a 12 g bullet with a horizontal speed of 460 m/s/s. The bullet strikes a block of wood and penetrates to a depth of 15 cm.
A mechanic pushes a 2.20 x10^3 kg car from rest to a speed of v, doing 5400 J of work in the process. During this time, the car moves 28.0 m. Neglecting friction between car and road, find each of the following.
A car is moving at a constant velocity for 3s until it is 3.0 m from a yellow light. It slows to a stop in 2.0s. It remains stopped for 50s and then speeds up for 2s.
A signal starts at x point. As it travels to y point it loses eight db. At point y the signal is boosted by ten db. As the signal travels to point z it loses 7 db.
Two 9cm diameter charged disks face each other, 25cm apart. Both disks are charged to - 80 nC.
An air molecule is moving at a velocity of 444 m/s. How various meters would the molecule move during 7.00 ms (milliseconds) if it didn't collide with any other molecules.
How many 112 W lightbulbs can you use in a 100 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 100 V.)
A ball is thrown straight up from the edge of the roof of the building. A second ball is dropped from the roof a time of 1.01 s later. You may ignore air resistance.
A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250 kg crate. What is the acceleration of the crate if the 750 N forces is maintained after the crate begins to move and coefficient of kine..
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