Determining the terminal speed
What is the terminal speed for an 77.0 skier going down a 45.0 snow-covered slope on wooden skis = 0.060? Assume that the skier is 1.70 tall and 0.500 wide
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Megan's mass is 30 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 2.8 m/s at the bottom of the slide. How much work was done by friction on Megan? Assume that air resistance is negligible.
The distance between the first and fifth minimum on a screen 60 cm behind the slits is 6.0 mm. What is the wavelength of the light used in this experiment?
A pendulum of length 5.0 m is held out to point A (see diagram below). At the vertical position, an overhang effectively cuts the length of the pendulum by an amount equal to 4.0 m.
Two horizontal forces, 249 N and 165 N, are exerted in opposite directions on a crate. What is the net horizontal force on the crate? Be sure to indicate the direction of the net force. (Assume that the 249 N force is in the positive direction.)
An exponential distribution with a mean time of thirty minutes. Over the long run, approximately what percentage of machines, on average, will be operating?
A loudspeaker of mass 22.0 kg is suspended a distance of h = 2.20 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.10 m. What is the tension in each of the cables?
What frequency is heard by a stationary observer when the engine moves toward him at 25.0m/s is the temperature outside is 40 degrees Celsius, speed of sound 355m/s?
At the same time, a stationary trumpeter played the same note. Ballot heard 4 beats/s. How fast was the train moving toward him? The speed of sound in air is 343 m/s .
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