Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown
The pressure on A2 is __________.
4 psi
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An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has he transferred to the spring, if the spring constant is 52.9 N/cm?
A) 423 J B) 423 kJ C) 4230 kJ D) 4230 J
A raindrop is doing its part to form a primary rainbow. Red and blue light enter near the top of the raindrop together from the sun. Both red and blue are reflected once at the back surface of the drop, but when the two rays emerge on the sunward side
A. the red ray lies above the blue ray and is more nearly horizontal than the blue ray. B. the blue ray lies above the red ray and is more nearly horizontal than the red ray. C. the blue ray lies below the yellow ray and is more nearly horizontal than the yellow ray. D. None of these choices are correct
Imagine a small magnet with its north pole vertically upward passing near the south pole of an external magnet that is above the small magnet. In what direction does the net force acting on the magnet point?
A. Upward. B. Downward. C. There is zero net force. D. None of the above (explain).
A high tide is occurring at Charleston, South Carolina (70°W, 12°N). At approximately what other longitude is a high tide occurring?
a. 110°E b. 70°E c. 20°E d. 20°W e. 110°W