Isotopes of the same element have the same number of protons
Indicate whether the statement is true or false
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Velocity Addition: Consider three galaxies, Alpha, Beta and Gamma. An astronomer in Beta sees each of the other two galaxies moving away from him in opposite directions at 0.70c. At what speed would an observer in Alpha see the galaxy Gamma moving?
A. 0.70c B. 1.4c C. 0.82c D. 0.94c E. 0.98c
Carnot Engine: An ideal Carnot engine extracts 529 J of heat from a high-temperature reservoir during each cycle, and rejects 225 J of heat to a low-temperature reservoir during the same cycle. What is the efficiency of the engine?
A. 0.57 B. 1.35 C. 2.35 D. 0.7
Exhibit 12-1
The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 12-1. How many revolutions does she complete in the 16-minute period?
A. 8 B. 12 C. 16 D. 20 E. 40
A coil in a magnetic field encloses a flux of 0.196 T·m2 when the angle between the normal to the coil and the direction of the magnetic field is 62.0°. What flux would go through the coil if the angle were changed to 38.9°?
a. 0.118 T·m2 b. 0.123 T·m2 c. 0.539 T·m2 d. 0.325 T·m2 e. 0.139 T·m2