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a skier starts from rest at the top of a hill inclined at 10.5 degrees. The hill is 200m long and the coefficient of friction is .075. At the bottom the hill the friction remains the same. How far does she slide before coming to a rest?
How much charge does the battery supply to each plate.
One cubic meter of water flowing over Niagara Falls in New York drops 96.6 meters. how much heat energy would the water have
A block of weight 46.7 N is hanging from a rope. The tension in the rope is 32.5 N, pulling upward on the block. What is the magnitude of the tension in the rope
What is the force on a test charge Q at the center.
A uniform, thin, solid door has height 2.40 m, width 0.900 m, and mass 22.5 kg. Find its moment of inertia for rotation on its hinges
A 22 nC charge is placed at the origin of an x-y coordinate system. A 16 nC charge is placed at coordinate (0, 8cm) and a -14 nC charge is at (-6cm, 0). What is the electric potential at coordinate (-6cm, 8cm)
A diver 32.0 m deep in 8.00 °C fresh water exhales a 1 cm diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where water temperature is 25°C? Hint: suppose the air bubble is always in thermal equilibrium wit..
A train 389 m long is moving on a straight track with a speed of 40.6 m/s. The engineer applies the brakes at a crossing, find how long (in s) the train blocked the crossing
A flash of light is emitted at position x1 on the x-axis and is absorbed at position x2=x1+d. In a reference frame moving with velocity v along the x-axis: What is the spatial separation d' between the point of emission and the point of absorption ..
Use the value of the Sun's luminosity (3.90×10^26 watts, or 3.90×10^26 joules per second) to calculate what mass of hydrogen the Sun will convert into helium during its entire main-sequence lifetime of 1.2×10^10 years.
A thermos contains 151 cm3 of coffee at 85.7 °C. To cool the coffee, you drop two 10.6-g ice cubes into the thermos. What is the final temperature of the coffee in degrees Celsius
This bat hears its own sound plus the sound reflected by the wall. Explain how fast should the bat fly in order to hear a beat frequency of 10.0Hz?
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