How does a comet's orbital angular momentum vary over its orbit?
A) Its angular momentum is greatest when the comet is closest to the Sun.
B) Its angular momentum is greatest when the comet is farthest away from the Sun.
C) Its angular momentum is the same throughout its orbit.
C) Its angular momentum is the same throughout its orbit.
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Dimensional Analysis: When adding several quantities
A. the quantities can have any combination of units. B. the quantities must all have exactly the same units. C. the quantities must all be dimensionless.
If the electric field just outside a thin conducting sheet is equal to 1.5 N/C, determine the surface charge density on the conductor.
A. 53 pC/m2 B. 27 pC/m2 C. 35 pC/m2 D. 13 pC/m2 E. 6.6 pC/m2
Atomic Nucleus: The atomic mass unit is defined as
A. the mass of a proton. B. the mass of an electron. C. the mass of a hydrogen-1 atom. D. one twelfth the mass of a carbon-12 atom. E. the mass of a carbon-12 nucleus.
A vertical tube one meter long is open at the top. It is filled with 75 cm of water. If the velocity of sound is 344 m/s, what will the fundamental resonant frequency be (in Hz)?
a. 3.4 b. 172 c. 344 d. 1.7 e. 688