The sky is blue due to air molecules scattering sunlight in all directions
a. True
b. False
Indicate whether the statement is true or false
True
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A cylinder rolls, without slipping, down an incline directly toward you. The cylinder’s angular velocity 
points in which direction?
A. Toward you B. Away from you C. To your right D. To your left E. Some other direction (specify
The potential energy at x = 8 m is -2000 V and at x = 2 m is +400 V. What is the magnitude and direction of the electric field?
A) 200 V/m directed parallel to the +x-axis B) 300 V/m directed parallel to the +x-axis C) 400 V/m directed parallel to the +x-axis D) 500 V/m directed parallel to the +x-axis E) 600 V/m directed parallel to the +x-axis
A certain astronomical telescope has a diameter of 5.60 m. Considering only the limitation due to diffraction, what is the minimum angle of resolution for this telescope at a wavelength of 620 nm?
A) 0.111 µrad B) 0.311 µrad C) 0.270 µrad D) 0.135 µrad E) 0.405 µrad
Arrange the following distances in order from smallest to largest. I. kilometer II. light-year III. yard IV. Astronomical unit
a. I, II, III, IV b. IV, III, II, I c. III, I, IV, II d. II, I, IV, III e. III, I, II, IV