The Hubble Law does not work for nearby galaxies because
A. nearby galaxies are contracting rather than expanding.
B. it is difficult to take the spectrum of nearby galaxies as compared to distant galaxies.
C. the Hubble law works for all galaxies; distance doesn't matter.
D. the speed of nearby galaxies is affected by their gravitational interaction with one another.
Answer: D
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Check all that are functions of the cerebellum.
A. Receives sensory plans for movements B. Acts as the "principal" of unconscious physical actions by regulating functions of motor pathways C. Directly controls the influences of hormones and enzymes on skeletal muscles D. Indirectly affects the excitability of motor neurons
Power is the rate at which
A) energy is transferred. B) voltage can be changed. C) current can be induced.
A projectile is launched with speed v at an angle ?, the angle being less than 45º. What other angle would give the same range for this projectile launched at the same speed v?
a. 2? b. 0.5? c. 90° – ? d. 90º – 0.5?
If 700 Joules of heat is added to a system, while the system does 550 Joules, by how much does the internal energy increase?
a. –1250 J b. –150 J c. 700 J d. 150 J e. 1250 J