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A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 10° incline. His speed at the bottom is 15 m/s.
a- What is the length of the incline ?
b- How long does it take him to reach the bottom?
A simple pendulum has a mass of 0.650 kg and a length of 2.00 m. It is displaced through an angle of 7.0° and then released. What is the maximum speed of the bob
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
A meter stick is supported on a fulcrum at the 21 cm mark. A 0.80 kg object is hung from the zero end of the meter stick, What is the mass of the meter stick
An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. What is the horizontal force acting on the puck
A balloon is filled with 4.75 liters of helium at a pressure of 1.05 atm and a temperature of 28.0° C. Find the acceleration of the balloon if the rubber has a mass of 4.00 g
The suspension system of your 1200 kg car has a natural oscillation frequency of 2.00 Hz without functioning shock absorbers. At what speed are you driving
A beam of sodium light (landa =589 nm) is incident from air on a smooth surfac of water at an angle of 65 degrees (with respect to the vertical). Determine the wavelength of the light in the water
How does Betelgeuse's radius compare to that of the sun. What is the ratio of the surface temperature of this star to 5800 K the surface temperature of the sun.
An electron experiences a magnetic force of magnitude 4.20 10-15 N when moving at an angle of 45.0° with respect to a magnetic field of magnitude 3.90 10-3 T. Find the speed of the electron
The ball curves because it is spinning at an average angular velocity of 370 rev/min (assumed constant) on its way to the catcher's mitt. Illustrate what is the angular displacement of the baseball (in radians) as it travels from the pitcher to t..
A 125-kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1720 N. Inside this rocket, Find the acceleration of the rocket
A standing wave on a 77.4cm long string has three antinodes. If the string has linear mass density 3.92×10?5kg/m and tension 10.1N , what are the wave's frequency
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