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A tennis player standing 12.6 m from the net hits the ball at 3.27° above the horizontal. To clear the net, the ball must rise at least 0.458 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving when it left the racket?
Discover the magnitude of acceleration
An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.40 10-11 m. What is EPEfina..
A carbon nanopaeticle contains 7000 carbon atoms. According to the Einstein model of a solid, how many oscillators are in this block
A singly charged positive ion has a mass of 1.77 × 10^?26 kg. Find the radius of the ion's path in the field
aircraft has cross section of 710 m^2, what percentage of radiated energy will be detected
Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. How much time is required for the projectile to come up to speed
Find the change in internal energy using first law of thermodynamics.
A 320 piano slides 3.3 down a 24 incline and is kept from accelerating by the man who is pushing back on it parallel to the incline. Determine the work done by the man on the piano.
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
A particle of mass 4.41x10-13 kg carries a charge of 3.97x10-11C. what is its speed in meters per second
A string vibrates according to the equation y=5sin(pi*x)/3 cos(40pi*t), where x and y are in centimeters and ti is in secons. What is the distance between nodes
A spherical ball with a radius of 2.660×10-1 m is completely submerged in a fluid that has a density of 1.081×103 kg/m3. What is the volume of the fluid displaced by the ball? What is the weight of the fluid displaced by the ball?
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