Which of the following is NOT a vector?
A. Acceleration
B. Velocity
C. Mass
D. Weight
E. All of these choices are correct
Answer: C
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The ________ magnitude of a star depends directly upon its luminosity and distance
Fill in the blank(s) with correct word
An astronaut weighs 99.0 N on the Moon, where the acceleration of gravity is 1.62 m/s2. How much does she weigh on Earth?
A) 16.2 N B) 61.0 N C) 99.0 N D) 600 N E) 440 N
The spacing of ruled lines on a diffraction grating is 1,770 nm. The grating is illuminated at normal incidence with a parallel beam of white light in the 400 nm to 700 nm wavelength band
The longest wavelength that appears in the third order spectrum is closest to: A) 590 nm B) 570 nm C) 550 nm D) 530 nm E) 610 nm
At what rate is thermal energy generated in the 20-? resistor when ? = 20 V?
a.
6.5 W
b.
1.6 W
c.
15 W
d.
26 W
e.
5.7 W