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A tennis ball has a mass of 57 grams and can easily be served at 80 miles/hr.
Suppose several machines launch a rate of 100 tennis balls per second at 80 mph toward a wall where the balls make elastic collisions. Assuming 100 head-on collisions per second, what is the total steady force exerted on the wall? Calculate in Newtons, then in pounds.
An electron has a spin magnetic moment of magnitude ? = 9.285·10–24 A m2. Consequently, it has energy associated with its orientation in a magnetic field.
Calculate the value of μ for the Earth-Sun System, the value of μ for the Moon-Earth system, and then,assuming that the mass of the Earth is negligible in the first system (ie that μ for the Sun is just G times the mass of the Sun) and the mass of t..
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, What is the electric potential energy of this system of charges
A 8.0 x15 swimming pool slopes linearly from a 1 depth at one end to a 3.70 depth at the other. What is the mass of water in the pool.
A 64 kilograms water skier is being pulled by a nylon tow rope that is attached to a boat. Obtain the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
A horizontal platform the shape of a circular disk rotates in a horizontal plane about a frictionless vertical axis by an initial angular speed ?A dog (mass m) is initially riding the merry-go-round at its rim, however then slowly walks toward the ce..
White light is incident on a soap film (n = 1.29) in air. compute the minimum thickness of the soap film
The person in Figure P5.35 weighs 165 lb. As seen from the front, each light crutch makes an angle of 24.0° with the vertical. Determine the magnitude of the compression force in each crutch
a cart is propelled over an xy plane with acceleration components ax 4.0 ms2 and ay -2.0 ms2. its initial velocity
A laser produces an average power of 5.5 W in a light beam 1.0 mm in diameter. Find the peak electric field of the laser light
A record was set for stair climbing when a person ran up 1600 steps of the Empire State Building in 10 minutes 59 seconds. determine his average power output during the climb
Consider a roller coaster as it travels near the bottom of its track, what is the radius of curvature of the track
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