A 25-newton weight falls freely from the rest from the roof of a building, what is the total distance the weight falls in the first 1.0 second?
Ans: 4.9 meters
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The Zeeman effect can be used to determine the _______ our Sun and other stars
a. rotation speed of b. mass of c. color of d. magnetic field on e. radial velocity toward or away from
Applications to Astronomy: The sun has apparent brightness B at the earth, which is 1.5 × 108 km away. What would be the apparent brightness of the sun at Pluto, which is 6.0 × 109 km from the sun?
A. 0.25 B B. 0.063 B C. 0.025 B D. 0.00063 B
Tritium (3H) decays to 3He releasing 18.6 keV of energy. How much mass is converted into energy during this process?
A. 
B. 
C. 
D. 
E. 
The escape velocity of an object depends on I. the mass of that object. II. the mass of the object trying to escape. III. the distance from the center of the object and the escaping object. IV. the speed of light
a. I, II, III, & IV b. I & II c. I & III d. I, II, & IV e. I, III, & IV