A 10-V battery moves 7.0 mC of charge through a circuit running from its positive terminal to its negative terminal. How much energy was delivered to the circuit?
a. 1.4 mJ
b. 0.67 J
c. 0.070 J
d. 5.7E+2 J
e. 1.4 J
c
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Assume a gram of a substance marketed as "Pure Energy" is annihilated by a gram of a second substance "Anti-Pure Energy." How long would the energy released power a city which uses 109 watts of power?
A. 40 hrs B. 25 hrs C. 50 hrs D. 65 hrs E. 50000 hrs
What percentage of the Solar wind is hydrogen (H)? This is just the ratio of hydrogen to everything expressed as a percentage.
What will be an ideal response?
Which of the following ions would never form in chemical reactions?
a. F2- b. Al3+ c. O2- d. N3-
A thin converging lens is found to form an image of a distant building 24 cm from the lens. If an insect is now placed 16 cm from this lens, how far FROM THE INSECT will its image be formed?
A) 96 cm B) 32 cm C) 48 cm D) 64 cm E) 72 cm