Light of wavelength 400 nm falls on a metal surface having a work function 1.70 eV. What is the maximum kinetic energy of the photoelectrons emitted from the metal?
(c = 3.00 × 108 m/s,
h = 6.626 × 10-34 J • s = 4.141 × 10-15 ev • s, 1 eV = 1.60 × 10-19 J)
A) 4.52 eV
B) 3.11 eV
C) 1.41 eV
D) 2.82 eV
E) 1.70 eV
C
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A series RLC circuit has a resistance of 500
and inductance of 20.0 mH, and a capacitance of 2.00 
F The power source provides a voltage of v = (170 sin(377t))V. What is the impedance of this circuit?
A. 0.402 k
B. 1.33 k
C. 1.25 k
D. 1.41 k
E. 2.15 k
Temperature Scales: Express -40°C in °F.
A. -72°F B. -54°F C. -40°F D. 4.4°F
Each white dot in this figure represents the location of a small body in our solar system. The donut-shaped ring of white dots just beyond Neptune's orbit represents the part of our solar system that we call
A) the asteroid belt. B) the Kuiper belt. C) the Oort cloud. D) the solar nebula.
The region of the electromagnetic spectrum with frequencies just greater than those in the ultraviolet region is the ______________ region
a. x-rays b. radio waves c. microwaves d. infrared e. gamma rays