The battery powering a light bulb is disconnected. As the light bulb's heat dissipates, how will the resistance and current change?
1.The resistance will decrease and the current will increase.
2.The resistance will increase and the current will be zero.
3.The resistance will increase and the current will decrease.
4.The resistance will decrease and the current will be zero.
4
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The process of making an electron less tightly bound to an atom's nucleus is known as
a. excitation. b. Doppler broadening. c. collisional broadening. d. a red shift. e. quantum mechanics.
Dimensional Analysis: The rate R at which paint can be sprayed from a spray gun can be expressed as R = a · t. If R is measured in m3/s, and time t is measured in seconds, what are the SI units of a?
A. m3 B. m3s C. m3s3 D. m3/s E. m3/s2
The removal of an electron from an atom is called
a. binding affinity. b. atomizing. c. electron affinity. d. ionization.
In the figure shown, the coefficient of kinetic friction between the block and the incline is 0.40. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction in the pulley
a.
3.4 m/s2
b.
3.7 m/s2
c.
4.2 m/s2
d.
3.9 m/s2
e.
5.4 m/s2