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Consider a tennis ball that is hit by a player at the baseline with a horizontal velocity of 50 m/s (about 110 mi/h). The ball travels as a projectile to the player's opponent on the opposite baseline, 24 m away, and makes 30 complete revolutions during this time. What is the ball's angular velocity?
rad/s
Suppose a distant world with surface gravity of 5.28 m/s2 has an atmospheric pressure of 7.16 multiply.gif 104 Pa at the surface. Calculate the pressure at a depth of 10.0 m in the methane ocean
q1. a 3.0 kg basketball travelling at 15ms collides with the 2.0- kg baseball which is initially at rest in the elastic
If an astronaut dropped a small rock near the surface of Neptune, how far (in m) would the rock fall in 1.5 s
q1. in accordance to one estimate the first atomic bomb released an energy equivalent to 20 kilotons of tnt. if 1 ton
A spaceship is approaching a space station at a speed of 2.0 105 m/s. find the frequency of the beacon observed on the spaceship
A Carnot engine operates between temperatures of 747 and 324 K. Calculate what the efficiency would be if (a) the temperature of the hot reservoir were raised by 42.5 K or (b) if the temperature of the cold reservoir were lowered by 42.5 K. (Give ..
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.1 kg and the sign has a mass of ms = 16.8 kg. What is the net force the hinge exerts on the beam
A 12-kg block initially slides at 18 m/s on a flat rough surface and eventually stops. what is the entropy change of the system
Radiation falling on a perfectly reflecting surface produces an average pressure p. what is the pressure at that surface in terms of p
A hot (70°C) lump of metal has a mass of 250g and a specific heat of 0.25 cal/g°C. John drops the metal into a 500 g calorimeter containing 75g of water at 20°C.
An initially uncharged 3.53-?F capacitor and a 8.01-k? resistor are connected in series to a 1.50-V battery that has negligible internal resistance. Calculate the circuit\'s time constant in milliseconds
What is constant acceleration
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