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The coefficient of static friction between the sole of an athletic shoe and the basketball court floor is 0.67. Ken wears these shoes when he plays basketball. If Ken exerts a normal contact force of 1400 N when he pushes off the floor to run down the court, how large is the friction force exerted by Ken's shoes on the floor?
neglect air resistance during the descent. she comes to rest 3 m under the surface of the water. Find out the average force that the water exerts on the diver
A 60.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.36 102 m/s from the top of a cliff 162 m above level ground, obtain the initial total mechanical energy of the projectile
An underwater scuba diver sees the Sun at an apparent angle of 26? from the vertical. What is the Sun's angle of inclination
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.06 nm. What is the final state of the hydrogen atom
Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.3m behind the grating. Three bright fringes are seen on both sides of central maximum.
A wooden block (mass 0.1kg) is set on a rotating disk. What is the minimum coefficient of friction to ensure the block does not slide outward
You have been employed by the local circus to plan their human cannonball performance. For this act, a spring loaded cannon will shoot a human projectile, the Great Flyinski, across the big top to the net below. What do you tell the ringmaster
The temperature of 2.00 moles of argon gas is lowered from 2.80 x 10^2 K to 1.90 x 10^2 K. Find the change in the average kinetic energy per atom.
You have been visiting a distant planet. Your measurements have determined that the planet's mass is two times that of earth but the free-fall acceleration at the surface is only one-fourth as large. What is the planet's radius
A bar of length 2 cm slides along metal rails at a speed of 1 cm/s. The bar and rails are in a magnectic field of 2 T, pointing out of the page. what is the induced emf in the bar and rails
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. A +12.9 uC charge moves from the origin to the point (x, y) = (20.0cm, 45.6 cm). What was the change in the potential energy of this charge
In order for Sasha (in A-5) to feel weightless at the top of the ride, a) at what linear speed must the Ferris wheel tum? b) At this speed, how much would she appear to weigh at the bottom of the Ferris wheel.
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