A charged atom oscillating in a certain molecule has a period of oscillation of about 10 ps. What kind of electromagnetic radiation does it produce?
A. Radio
B. Microwave
C. Infrared
D. Visible
E. Ultraviolet
F. X-ray
T. Gamma ray
B. Microwave
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Which of the following is not one of the basic properties by which we classify a subatomic particle?
A) temperature B) mass C) charge (electrical) D) spin
A 2.0-C charge moves with a velocity of (
m/s and experiences a magnetic force of 
N. The x component of the magnetic field is equal to zero. Determine the z component of the magnetic field.
A. ?3.0 T B. +3.0 T C. +5.0 T D. ?5.0 T E. +6.0 T
Earth's axis is tilted ______________ degrees from the normal to the ecliptic plane
a. zero b. 90 c. 45 d. 23.5
A 15-?F capacitor and a 25-?F capacitor are connected in parallel, and charged to a potential difference of 60 V. How much energy is then stored in this capacitor combination?
a. 50 mJ b. 18 mJ c. 32 mJ d. 72 mJ e. 45 mJ