An astronaut at rest has a heart rate of 65 beats/min. What will her heart rate be as measured by an earth observer when the astronaut's spaceship goes by the earth at a speed of 0.80c?
a. 108 beats/min
c. 81 beats/min
b. 39 beats/min
d. 52 beats/min
B
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The electric field in the region defined by the y-z plane and the positive x axis is given by E = ax, where a is a constant. (There is no field for negative values of x.) As x increases in magnitude, relative to V = 0 at the origin, the electric potential in the region defined above is
A. a decreasing function proportional to ?|x2|. B. a decreasing function proportional to ?|x|. C. constant. D. an increasing function proportional to +|x|. E. an increasing function proportional to +|x2|.
The ________ Space Telescope still gives us the highest resolution optical images
A) Chandra B) Kepler C) Hubble D) Fermi E) Einstein
The ________ epoch happened when the superforce separated into the electromagnetic, strong, and weak forces, with a tremendous release of pressure
Fill in the blank(s) with correct word
What does the Q represent in the stream discharge equation
What will be an ideal response?