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the drawing shows a coin resting on the bottom of a beaker filled with an unknown liquid. a ray of light from the coin travels to the surface of the liquid and is refracted as it enters into the air. a person sees the ray as it skims just above the surface of the liquid. how fast is the light traveling in the liquid? let x=5.0cm and y=6.00cm.
A .30-06 rifle fires a bullet with a mass of 10 g at a velocity of 800 m/s. If the rifle has a mass of 4 kg, what is its recoil speed
A single slit has a width of 2.1x10^(-6)m and is used to form the diffraction pattern. Find out the angle that locates the second second dark fringe when the wavelength of the light is 430 nm.
Draw a free body diagram for the skydiver in the instant after he jumps.(Assume that at this point his velocity is near zero so that air resistance is still negligible.)
The Earth (5.98 x 10^24 kg) and the Moon (7.35 x 10^22) kg are separated by an average distance of 3.84 x 10^8 m
Suppose that while moving into an apartment you move a refridgerator into place by sliding it across the floor. What is the least force you could exert on the fridge to move it
The skiing duo of Brian (83 ) and Ashley (46 ) is always a crowd pleaser. In one routine, Brian, wearing wood skis, starts at the top of a 280 long, What is their speed at the bottom of the slope
You are boiling water in an alumunum pot. The radius of the bottom of the pot is 10 cm and the aluminum is 3 mm thick. What is the temperature of the outer surface of the aluminum pot
Two cylindrical bars, each with diameter of 2.30 cm, are welded together end to end. One of the original bars is copper and is 0.350 m long
A person pulls on the tether of a suitcase with a force of 15N at an angle of 60 degrees with the horizontal. what is the work done by friction in the same distance
Josh starts his sled at the top of a 3.0 m high hill that has a constant slope of 25°. After reaching the bottom, he slides across a horizontal patch of snow. How far from the base of the hill does he end up
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.48 km. What is the magnitude of the couple's displacement
Tritium (3H) decays by negative beta decay with a half-life of 12.16 years. Use an atomic weight. What is the mass in g of 1 mCi of tritium? 3.026 For 3H.To what nucleus does 3H decay.
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