The peak of Mt. Everest, at 10,900 meters, is the highest point above sea level in the world. What is its elevation in miles?
A) 17.6 miles
B) 0.630 miles
C) 6.77 miles
D) 6.20 miles
E) 67.1 miles
C
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A.A B.B C.C D.D E. Toward the viewer F. Away from the viewer T. The field is zero.
We can't detect stellar parallax with naked-eye observations. Which of the following would make parallax easier to observe?
A) increasing the size of Earth's orbit B) speeding up Earth's rotational motion C) slowing down Earth's rotational motion D) speeding up the precession of Earth's axis E) getting away from streetlights
A tiny dust particle of mass 8.50 µg is being observed under a microscope. Its position is determined to be within a space of 0.0060 mm. (h = 6.626 × 10-34 J ? s)
(a) Find the uncertainty in its speed implied by the uncertainty in its position. (b) Assuming the dust particle is moving at the speed in part (a), how many years would it take for the particle to move 1.0 mm?
Each of the following is a prediction of the theory of relativity. Which one is crucial to understanding how the Sun provides light and heat to Earth?
A) If you observe someone moving by you, you'll see their time running slowly. B) Gravity is curvature of spacetime. C) E = mc2 D) Time runs slower on the surface of the Sun than on Earth. E) Space is different for different observers. Time is different for different observers. Spacetime is the same for everyone.