Which is a statement of Bernoulli's principle?
a. The pressure in a fluid decreases as its velocity decreases.
b. The pressure in a fluid decreases as its temperature decreases.
c. The pressure in a fluid decreases as its velocity increases.
d. The pressure in a fluid decreases as its temperature increases.
e. The speed of a fluid increases as its velocity increases.
c
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A person pushes on a doorknob with a force of 5.00 N perpendicular to the surface of the door. The doorknob is located 0.800 m from axis of the hinges of the door. The door begins to rotate with an angular acceleration of 2.00 rad/s2
What is the moment of inertia of the door about the hinges? A) 2.00 kg?m2 B) 1.00 kg?m2 C) 12.5 kg?m2 D) 8.00 kg?m2 E) 6.40 kg?m2
What causes the outward gas pressure that balances the inward pull of gravity in a main-sequence star?
a. the rapid outward flow of gas
b. the rapid inward flow of the gas
c. the high temperature of the gas
d. the high density of the gas
e. the high temperature and the high density of the gas
On Io, volcanic eruptions, such as those from Prometheus, can send material how far above the surface?
A) 150 km or more B) 2-3 km C) A few meters D) Just far enough to get a surface flow E) Nowhere—volcanoes are not found on moons.
The gravitational slingshot effect can increase the speed of a spacecraft, but not decrease it
Indicate whether the statement is true or false