Which of the following is that form of energy associated with an object's motion?
a. potential
b. thermal
c. bio-chemical
d. kinetic
d
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A force of 500 N is applied to a rod with a diameter of 4.00 mm. The stress in the rod is
a. 
b. 
c. 
d. 
e. 
Diffraction Gratings: A diffraction grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known, but light of a known wavelength of 632.8 nm is deflected by 43.2° in the second order by this grating. Light of the wavelength to be measured is deflected by 34.9° in the second order. What is the wavelength of the light that is to be measured?
Fill in the blank(s) with the appropriate word(s).
Wave 1 has amplitude of 9.0 units and wave 2 has amplitude 4.0 units. What is the ratio of their intensities, I1/I2?
A. 20 B. 5.1 C. 2.3 D. 1.5 E. 1.3
The name given to the point of a planet's orbit that is farthest from the Sun is
a. aphelion. b. focus. c. perihelion. d. solstice.