Many supernovas are thought to result in
A) neutron stars. B) regular stars like our sun.
C) red giant stars. D) white dwarfs.
A
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Adiabatic processes occur in Earth's
A) atmosphere. B) oceans. C) mantle. D) all of the above E) none of the above
In accord with general relativity, a person living at the top of a skyscraper ages
A) faster than a person on the ground floor. B) slower than a person on the ground floor. C) at the same rate as a person on any floor.
The force of a boxer's punch is greater when it hits a
A) small punching bag. B) heavy punching bag. C) both forces would be the same for the same effort
An ideal fluid, of density 0.90 × 10^3 kg/m3, flows at 12 m/s through a level pipe with radius of 0.50 cm. The pressure in the fluid is 1.3 × 10^5 N/m2 . This pipe connects to a second level pipe with a radius of 1.5 cm. Find the speed of flow in the second pipe
a. 54 m/s c. 0.67 m/s b. 1.3 m/s d. 0.33 m/s