What is the kinetic energy of an electron that passes undeviated through perpendicular electric and magnetic fields if E = 4.0 kV/m and B = 8.0 mT?
a. 0.65 eV
b. 0.71 eV
c. 0.84 eV
d. 0.54 eV
e. 1.4 eV
B
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Briefly describe what you would see if your friend plunged into a black hole. Assume you are watching from orbit of the black hole and have a telescope powerful enough so that you can see him clearly as he falls.
What will be an ideal response?
Heat a copper wire and its electric resistance
A) decreases. B) remains unchanged. C) increases.
The molar specific heat is the amount of heat required to raise the temperature of what amount of matter by one unit of temperature?
A) one tooth B) one unit of mass of a material C) one mole of a substance D) two moles of a substance E) one molecule of a substance
The force constant of HCl is 480 N/m. If the atomic masses are 1 u and 35 u (1 u = 1.66 × 10^?27 kg), find the fundamental frequency (in Hz)
a. 6.4 × 10^13 b. 9.2 × 10^13 c. 7.7 × 10^13 d. 8.7 × 10^13 e. 1.4 × 10^13