If the orbit of Mercury were perfectly circular, its rate of precession would be
A) larger than it is now.
B) smaller than it is now.
C) the same as it is now.
D) zero.
Answer: D
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Two identical steel balls are released from rest from the same height and travel along tracks as shown and labeled below
The difference between speed and velocity is that
A) they are expressed in different units. B) velocity also includes a direction. C) velocity is the same as acceleration but speed is different. D) velocity is calculated using a physics equation.
The spectral lines of a star indicate ionized helium is prominent, yet the star appears orange in color. Explain the problem with this and offer an explanation
What will be an ideal response?
A bird, accelerating from rest at a constant rate, experiences a displacement of 37 m in 11 s. What is the final velocity after 11 s?
a. 6.7 m/s c. 13 m/s b. 5.1 m/s d. zero