Earth's axis completes a precession every
a. 25,800 years.
b. 30 days.
c. day.
d. 365 days.
a
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A Hooke's law spring is mounted horizontally over a frictionless surface. The spring is then compressed a distance d and is used to launch a mass m along the frictionless surface. What compression of the spring would result in the mass attaining double the kinetic energy received in the above situation?
a. 1.41d c. 2.00d b. 1.73d d. 4.00d
Hydrogen Balmer lines are essentially absent in the O and M type stars.
Answer the following statement true (T) or false (F)
Isaac Newton's contributions to physics include
a. the laws of motion. b. the law of universal gravitation. c. invention of the calculus. d. the invention of the reflecting telescope. e. all of the above.
When viewing a seascape, what is a major difference in the effect of wearing polarizing sunglasses versus sunglasses that simply cut down on intensity?
What will be an ideal response?