What is the minimum amount of energy required for a 60.0-kg climber carrying a 18-kg pack to climb Mt. Everest, 8 250 m high?
a. 6.3E+6 J
b. 3.4E+6 J
c. 4.9E+6 J
d. 6.4E+5 J
e. 3.5E+5 J
a
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Explain the changes that occurred as the Universe expanded
What will be an ideal response?
Saturn's icy moon Enceladus
A) has an ancient, heavily cratered surface reminiscent of the Moon B) is small and irregular in shape like an asteroid C) has a smooth, icy surface criss-crossed with dark cracks D) has fountains of ice particles and water vapor spraying out from its surface
Intensity: A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions. What is the average intensity of the light from this bulb at a distance of 0.400 m from the bulb?
A. 14.9 W/m2 B. 37.2 W/m2 C. 27.4 W/m2 D. 11.9 W/m2 E. 29.8 W/m2
Answer the following statement(s) true (T) or false (F)
1.When a baseball pitcher throws a curveball, he or she puts top-spin on the ball. This causes the ball to interact with the passing air in such a way as to make the air push the ball downward perpendicular to the ball’s velocity. (This causes the ball to dive sharply as it approaches the plate, making it quite difficult to hit.) We would classify this force as a “lift” force on the ball.