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An aircraft weighing 892 N is accelerated at 9.9 m/s/s for 5 seconds, at which time the aircraft launches. Assume the acceleration is constant. What is the force required to launch the aircraft?
A tennis ball is hit with a vertical speed of 30 m/s and a horizontal speed of 25 m/s. How long will the ball remain in the air? How far will it travel horizontally during this time?
I hold a flat mirror 24.6 cm in front of my face. There is a freckle on my face 1 mm in diameter. Find the angular size of the freckle on the image of my face as viewed by my eye
A 0.15 kg particle moving to the left with a speed of 0.05 m/s, Determine the final velocity of each particle and the fraction of total energy transferred to the 0.27 kg particle
The catapult on an aircraft carrier can take an aircraft from 0 to 209 mph (the launch speed) in 9 seconds, at which time the aircraft launches
Two small beads having positive charges24qandqare fixed at the opposite ends of a horizontal insulating rod, At what position is the third bead in equilibrium
Imagine holding a really light object on top of a really massive object, and then dropping both of them at the same time onto the ground, how high will the little object bounce
welding machine draws a 18A of current at 240V. When it is inadvertently connected to a 120V outlet, the current in it is 10A. Is the machine's resistance ohmic
A neutral (uncharged) capacitor has a charge of -3.00C moved from one of the plates to the other in a time of 5.00 sec, leaving +3.00C on the 1st plate. The +charges don't move, only the electrons. What was the average current?
A block of mass m is accelerated across a rough surface by a (massless) rope passing over an ideal pulley and connected to a second mass m2. Derive an expression for the acceleration of the sliding block
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.80m tall that is 4.35m fromt he lens. How far must the lens be from the photocells
A charge of 2.5 Coulombs is uniformly distributed throughout a nonconduction sphere of radius 0.15 m. calculate the charge density in the sphere
A 1442 kg car is traveling south, and a 2028 kg van is traveling west. what is the speed of each vehicle
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