Physics, 15.09.2021 22:20 sammizwang
Question 2 of 25
Which of the following is true about a planet orbiting a star in uniform circular
motion?
A. The velocity of the planet is constant.
OB. The speed of the planet is always changing.
C. The velocity vector of the planet points toward the center of the
circle.
O D. The acceleration vector of the planet points toward the center of
the circle.
SUBMIT
Answers: 3
Physics, 21.06.2019 13:00
Why are some galaxies’ spectra blueshifted rather than redshifted? question 4 options:
Answers: 3
Physics, 22.06.2019 12:30
Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j
Answers: 1
Physics, 23.06.2019 09:30
What would occur if the index of refraction of a material was less than n=1? the speed of light would increase to a speed larger than the maximum speed of light in a vacuum. the light wave would not bend at all though the material. the light wave would not be able to refract and would instead reflect off of the material. the speed of light would reduce to values close to 0 m/s.
Answers: 3
Question 2 of 25
Which of the following is true about a planet orbiting a star in uniform circular...
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