The gauge pressure of the water in a swimming pool at 10 ft is twice the gauge pressure of the water at 5 ft
a. True
b. False
Indicate whether the statement is true or false
True
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Block A of mass 8.0 kg and block X are attached to a rope that passes over a pulley. A 50-N force P is applied horizontally to block A, keeping it in contact with a rough vertical face
The coefficients of static and kinetic friction between the wall and block A are ?s = 0.40 and ?k = 0.30. The pulley is light and frictionless. In the figure, the mass of block X is adjusted until block A descends at constant velocity of 4.75 cm/s when it is set into motion. What is the mass of block X? A) 6.5 kg B) 7.2 kg C) 8.0 kg D) 8.8 kg E) 9.5 kg
If you could count stars at a rate of about one per second, how long would it take to count all the stars in the Milky Way Galaxy?
A) several days B) several thousand years C) several weeks D) several years
A spaceship is traveling to the Moon. At what point is it beyond the pull of Earth's gravity?
A) when it gets above the atmosphere B) when it is half-way there C) when it is closer to the Moon than it is to Earth D) It is never beyond the pull of Earth's gravity.
Two parallel wires each carrying a current in opposite directions will ________ one another.
Fill in the blank(s) with the appropriate word(s).