In a nova, there is a white dwarf, an evolving companion star, and a(n) ________ surrounding the white dwarf's equator
Fill in the blank(s) with correct word
accretion disk
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Dimensional Analysis: Newton's second law, F = ma, relates force F, mass m, and acceleration a. Use this equation to deduce the SI units of force.
A. kg ? m/s B. s2 / (kg ? m) C. m/s2 D. kg ? m/s2 E. m2/s2
The first scientific attempt to map the Milky Way galaxy
a. showed that the Sun was located in the center of the system of planets making up our galaxy. b. showed that our galaxy is a round ball on which we live. c. showed that our galaxy has 9 stars. d. used globular clusters to determine the location of the center of the Earth. e. was completed by William and Caroline Herschel.
Consider the elliptical orbit of a comet around the Sun. Where in its orbit does it have the largest amount of total orbital energy?
A) when it is farthest from the Sun B) when it is closest to the Sun C) It always has the same total orbital energy.
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/ . The child is standing 4.65 m from the center of the merry-go-round
What is the magnitude of the acceleration of the child? A) 8.05 m/s2 B) 7.27 m/s2 C) 2.58 m/s2 D) 3.46 m/s2 E) 4.10 m/s2