Light from a monochromatic source shines through a double slit onto a screen 5.00 m away. The slits are 0.180 mm apart. The dark bands on the screen are measured to be 1.70 cm apart. What is the wavelength of the incident light?
A) 457 nm
B) 306 nm
C) 392 nm
D) 612 nm
E) 784 nm
D
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Two identical blocks are pulled as shown along rough horizontal surfaces with the same coefficient of friction. Both are pulled at constant speed v. Which tension force does more work moving the block a distance D along the surface?
The ?0 meson has a mass of 264 times that of an electron
What is the approximate range of the force mediated by this particle? (melectron = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s) A) 1.5 × 10-14 m B) 1.5 × 10-10 m C) 1.5 × 10-12 m D) 1.5 × 10-15 m
A woman drives 75 m to the east. She stops, asks directions, and then drives 75 m to north. What is the direction of the displacement with respect to east?
a. 30 b. 53 c. 0 d. 45
"Gibbous" means a nearly full moon. If I see a waxing gibbous moon tonight, what moon phase will I see in one week?
A) waxing crescent B) waxing gibbous C) waning gibbous D) waning crescent