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Player serves a tennis ball 2.2 m above the ground. The ball leaves his racquet with a speed of 56 m/s at an angle 10 degree below the horizontal. The horizontal distance to the net is 7 m, and the net is 1.0 m high.
what's the ball clea the net?
In a closed circuit (that consists of a electric heater, a metal conducting rod, and two rails), it must have an outside force applied to keep the rod moving at a constant speed. What is the velocity of the moving conducting rod
A solenoid 88.0 cm long has a radius of 2.60 cm and a winding of 2000 turns; it carries a current of 3.60 A. Calculate the magnetic field outside the solenoid
A toy top has a string wrapped around its body. The string has a length of 64cm and is wrapped around the top at a place where its radius is 2.0cm. What is the final angular velocity in rpm of the top when the string is completely unwound
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree,as well as its height, How far away is the tree?
A flutist assembles her flute in a room where the speed of sound is 342m/s . When she plays the note A, it is in perfect tune with a 440Hz tuning fork. How many beats per second will she hear if she now plays the note A as the tuning fork is sounde..
One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.0° with the x-axis. Illustrate what is the magnitude of the third force?
Density is the ratio of an object;s mass to its volume. Would you except density to be a vector or a sdcalar quanity? Explain.
a projectile of mass 0.212kg is shot from a cannon. The end of the cannon barrel is at height 6.4m, the initial velocity of the projectile is 9.3m/s. How long does it take the projectile to hit the ground
A 0.5 kg dart is fired vertically from a spring gun that has spring constant of 4000 N/m. Determine maximum height reached by dart.
The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 7.00 s, Through how many revolutions does the tub turn while it is in motion
The naturally occurring charge on the ground on a fine day out in the open country is -1.00 nC/m2. Calculate the electric potential at this height
Jack and Jim are resting on an offshore raft after a swim. They estimate that the horizontal distance between a trough, Calculate how fast the waves are moving
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