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Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. The peaks of the ripples are 0.03 meters apart. What is the period of the water ripples?
A copper rod 20 cm long having a cross-sectional area of 7.0 cm2 is used to connect a boiler maintained at 100 oC to a large block of ice at 0 oC. What is the rate of change in entropy of the boiler
Two balls of putty, each mass m, move in opposite directions toward each other with speeds of 0.95. What is the mass of this ball of putty
A child operating a radio-controlled model car on a dock accidentally steers it off the edge. What is the car's speed at the instant it drives off the edge of the dock
A conducting wire is quadrupled in length and tripled in diameter. By what factor does its resistance change
q1. an airplane is flying with a velocity of 83.0 at an angle of 25.0 above the horizontal. when the plane is a
You are designing the section of a roller coaster ride. Previous sections of the ride give the train a speed of 14.9 m/s at the top of the incline, find the minimum radius you can use for the vertical loop
The blue ball moves at an angle of -35° and a velocity of 2.1 meters/second. What is the final y-momentum of the system?
A 19.0 m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder of aluminum 4.50 cm in diameter. How far to the side does the top of the pole flex
A rock of mass 42 kg accidentally breaks loose from the edge of a cliff and falls straight down. What is the magnitude of the acceleration of the rock
A +6.4 µC charge is placed at the origin and a -3.3 µC charge is placed at x = 25 cm. At what coordinates can a third charge be placed
An ultraviolet lamp emits light of wavelength 400 nm at the rate of 430 W. An infrared lamp emits light of wavelength 700 nm, also at the rate of 365 W. Which lamp emits photons at the greater rate
Two converging lenses (f1 = 9.00 cm and f2 = 6.00 cm) are separated by 18.0 cm. The lens on the left has the longer focal length. Locate the final image relative to the lens on the right
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