You observe two stars that are identical to our Sun, but that are located at di?erent distances from Earth. Which star is the most luminous?
A) They are both the same luminosity.
B) The one that appears brightest in our sky is more luminous.
C) The one that appears faintest in our sky is more luminous.
D) There is no way to tell from the information given.
A) They are both the same luminosity.
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If M = 1.1 kg, what is the tension in string 1?
a.
54 N
b.
47 N
c.
40 N
d.
62 N
e.
57 N
A charge of 8.0 pC is distributed uniformly on a spherical surface (radius = 2.0 cm), and a second charge of -3.0 pC is distributed uniformly on a concentric spherical surface (radius = 4.0 cm). Determine the magnitude of the electric field 5.0 cm from the center of the two surfaces
a. 14 N/C b. 11 N/C c. 22 N/C d. 18 N/C e. 40 N/C
The position of a mass that is oscillating on a spring is given by x = (17.4 cm) cos[(5.46 s-1)t]. What is the period of this motion?
A) 1.74 s B) 1.15 s C) 1.32 s D) 0.869 s E) 0.314 s
The energy levels of electrons in atoms are ______________, which means that only certain values of energy are allowed
Fill in the blank(s) with correct word