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Q. A loudspeaker of mass 22.0 is suspended a distance of = 1.00 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.90 .
Q. You throw a 143 g ball straight up to a height of 37.0 m.
(a) Assume that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand?
(b) Calculate the average force exerted by your hand while you are throwing it.
What is the magnitude of an average acceleration of the ball
A 2.46 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 110 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 10.4 m/s, while spring is..
A bolt is dropped from a bridge under construction, falling 92m to the valley below the bridge. (a) How much time does it take to pass through the last 26 percent of its fall? What is its speed (b) when it begins that last 26 percent of its fall a..
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with amplitude of 20.0 cm.
A hunter aims directly at a target (on the same level) 101m away. If the bullet leaves the gun at a velocity of 203m/s, by how much will it miss the target.
A circuit contains sic 60 W lamps with a resistance of 240 ohm each and a 10 ohm heater connected in parallel. The voltage across the circuit is 120 V. Find the current in the circuit.
A sailor strikes the side of his ship just below the surface of the sea. He hears echo of the wave reflected from the ocean floor directly below 9 s later. How deep is the ocean at this point.
A total of 34 bright and 34 dark Newton's rings (not counting the dark spot at the center) are observed as 550 -nm light falls normally on a planoconvex lens resting on a flat glass surface. How much broad is the center than the edges.
How fast (in ) must a centrifuge rotate if a particle 5.4 from the axis of rotation is to experience the acceleration of 300000 's.
A car is traveling at a constant speed of 38.8m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has constant acceleration. What acceleration must it..
assume the current in the coaxial cable, see the figure , is not uniformly distributed, but instead the current density varies linearly with distance from the center: for the inner conductor and for the outer conductor. Each conductor still carrie..
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary.
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