A blimp is filled with 200 m3 of helium. How much mass can the balloon lift? The density of helium is one-seventh that of air, and the density of air is 1/800 that of water. Consider the mass of the balloon to be negligible
a. 115 kg
b. 214 kg
c. 315 kg
d. 415 kg
e. 37 kg
B
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Almost all of Earth's supply of energy comes from
A) the oceans. B) Earth's interior. C) the Sun. D) carbon dioxide.
In the formation of our Galaxy, the ________ formed first
A) planetary nebulae B) globular clusters C) spiral arms D) galactic center E) galactic disk
In this course we have seen that baryons have inertial and gravitational mass, intrinsic angular momentum, and other internal properties that have been given names like baryon number, strangeness, charm, etc. The Standard Model's explanation for these properties of baryons is that
a. the baryons are states of something more elementary that can exist in multiple quantum states. b. the leptons are states of something more elementary that can exist in multiple quantum states. c. photons are states of something more elementary that can exist in multiple quantum states. d. according to the Heisenberg Uncertainty Principle quantum numbers are indeterminate. e. quarks are states of something more elementary that can exist in multiple quantum states.
An accelerator that slams particles moving in opposite directions into one another is called a ___________.
A. collider B. synchrotron C. linear accelerator D. storage ring E. de Broglie modulator