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A tennis ball is struck at the base line of the court, 13.3 m from the net. The ball is given an initialvelocity with a horizontal component equal to 22.0 m/s at an initial elevation of 1.45 m.
a) What vertical component of initial velocity must be given to the ball, such that it barely clears the 1.00 m high net?b) How far beyond the net will the ball hit the ground?
What is the speed of an electron that has a total energy of zero in a hydrogen atom
During WWII some paratroopers landed in gliders instead of dropped by parachute. The gliders had no power of their own, Find the lift force provided by the glider's wings
A solid disk rotates at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m
If a ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = -16t^2 + 20t. How many seconds does it take for the ball to reach its greatest height, and what is this height.
A long, current-carrying solenoid with an air core has 1640 turns per meter of length and a radius of 0.0173 m. What is the mutual inductance of this system
A torque of 11Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
You close the top of your straw with your thumb and lift the straw out of your glass containing Coke. How large is the error (in per cent) if you neglect the air in the straw
A Goodyear blimp typically contains 4250 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. What is the mass (in kg) of the helium in the blimp
The locomotive is moving at 25 km/h. The engineer of the high speed train immediately applies the brakes. What must be the magnitude of the resulting constant deceleration if a collision is to be just avoided.
Two slits of equal width are a distance 0.57 mm apart and are illuminated by coherent, mono-chromatic light. compute the widths of the slits
Suzy is holding her kite on a string 25.0 m long when the kite hits the top of a flagpole, which is 14.9 m higher than her hands. Assuming that the string is taut and forms a straight line
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