Stars that have masses similar to the Sun's, and sizes similar to the Earth are
A) main sequence stars.
B) white dwarfs.
C) red giants.
D) red dwarfs.
E) brown dwarfs.
B
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A measurement of 0.00254 g is the same as
a. 0.254 mg. b. 25.4 mg. c. 254 mg. d. 2.54 mg. e. none of these.
Distinguish between solvent and solute
A rocket is moving at 1/4 the speed of light relative to Earth. At the center of this rocket, a light suddenly flashes. To an observer at rest in the rocket
A) the light will reach the front of the rocket at the same instant that it reaches the back of the rocket. B) the light will reach the front of the rocket before it reaches the back of the rocket. C) the light will reach the front of the rocket after it reaches the back of the rocket.
A 1.7 H inductor has a current of 6.6 A flowing through it. The current reduces to 3.3 A over a period of 1.6 s. What is the average power the inductor supplies to the circuit as the current reduces?
A. 17 W B. 37 W C. 9.3 W D. 28 W E. 46 W