A student's height is 170 cm. Determine that student's height in inches
66.9 in.
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Projectile Motion: A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stopwatch measures the stone's trajectory time from the top of the cliff to the bottom to be 4.3 s. What is the height of the cliff if air resistance is negligibly small?
A. 22 m B. 43 m C. 77 m D. 91 m
A Thermos bottle has double glass walls with silver coating on the glass surfaces that face each other. The silver coating reduces energy transfer by
A) conduction. B) convection. C) radiation. D) all the above E) none of the above
X-Ray Diffraction: A researcher is using x-rays to investigating a cubic crystal. He is looking at Bragg reflection from the planes parallel to the cube faces. He finds that when using x-rays with a wavelength of 0.165 nm, a strong first maximum occurs when the beam makes an angle of 23.5° with the planes. What is the spacing of adjacent atoms in this crystal?
Fill in the blank(s) with the appropriate word(s).
Based on Shapley's determination of the center of the galaxy, the Sun is located ____
a. in the galactic halo b. near the center of the galaxy c. at the edge of the galactic bulge d. in the middle portion of the galactic disk e. at the outer edge of the galactic disk