What is the equivalent resistance between points a and b when R = 13 ??
a.
29 ?
b.
23 ?
c.
26 ?
d.
20 ?
e.
4.6 ?
d
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A diffraction grating has 300 lines per mm. If light of wavelength 630 nm is sent through this grating, what is the highest order maximum that will appear?
A) 8 B) 2 C) 6 D) 5 E) 5.3
Which of the patterns shown below would appear on a screen when monochromatic light first passes through a narrow slit for which a = ? and then strikes the screen? Note that the darkest area in each illustration represents the brightest area on the screen.
A.
B.
C.
D.
E.
How is Einstein's famous equation, E = mc2, important in understanding the Sun?
A) The Sun has a magnetic field strong enough to influence the atmospheres of the planets. B) The Sun's surface temperature is about 6,000° Celsius. C) The Sun is extremely massive. D) The Sun generates energy to shine by losing 4 million tons of mass each second.
Our universe is the planets orbiting the Sun, the Sun, and all the asteroids and comets in between and around our system
a. True b. False Indicate whether the statement is true or false