Earth's axis is tilted by ________ degrees relative to the Celestial Equator.
A. 25
B. 23.5
C. 66.5
D. 11
E. 32.5
Answer: B
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The gas created by the big bang was so hot that it was completely _______________ until the Universe was no longer radiation-dominated
Fill in the blank(s) with correct word
When a person stands on a scale, which of the following is not a force exerted on the scale?
A. a contact force due to the floor B. a contact force due to the person's feet C. the weight of the person D. the weight of the scale
Two spheres are made of conducting material. Sphere #2 has twice the radius of Sphere #1. What is the ratio of the capacitance of Sphere #2 to the capacitance of Sphere #1?
A. 1, since all conducting spheres have the same capacitance. B. 2 C. 4 D. 8 E. A single sphere has no capacitance since a second concentric spherical shell is necessary to make a spherical capacitor. Thus, none of the answers above is correct.
A 1200-kg automobile moving at 25 m/s has the brakes applied with a deceleration of 5.0 m/s2 . How far does the car travel before it stops?
a. 39 m c. 55 m b. 31 m d. 63 m