One rem of radiation dose takes how many gammas per square centimeter?
A. about 1
B. about 5000
C. about a million
D. about 2,000,000,000
Answer: D. about 2,000,000,000
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A 150. W lamp is placed into a 120. V AC outlet
(a) What are the peak and rms currents? (b) What is the resistance of the lamp?
In an inelastic collision between two objects with unequal masses:
a. the velocity of one will increase by the amount that the velocity of the other decreases. b. the momentum of one will increase by the amount that the momentum of the other decreases. c. the energy of one increases by the amount that the energy of the other decreases. d. the total momentum of the system will decrease.
A 2000 V/m electric field is directed along the +x-axis. If the potential at x = 10 m is 800 V, what is the potential at x = 6 m?
A) 8800 V B) 2000 V C) 7200 V D) 4400 V E) 1600 V
Consider a container of 2.0 grams of hydrogen (one gram mole). Suppose you removed all the electrons and moved them to the other side of the Earth (Earth diameter 12740. Km)
(a) How much charge is left behind? (b) What is the attractive force between the protons here and the electrons at the other side of the Earth?