The greenhouse effect raises Earth's surface temperature by roughly
a. 0 K.
b. 0.35 K.
c. 3.5 K.
d. 35 K.
e. 350 K.
d. 35 K.
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Which of the following steels is not quenched and tempered to increase the strength?
(a) 4340 (b) 1040 (c) 1010 (d) 1060
A 0.16 pF parallel-plate capacitor is charged to 10 V. Then the battery is disconnected from the capacitor. When 1.00 × 107 positive charges of magnitude |e| are now placed on the positive plate of the capacitor, the voltage between the plates changes by
A. ?5.0 V. B. ?1.1 V. C. 0 V. D. +1.1 V. E. +5.0 V.
For a closed surface through which the net flux is zero, each of the following four statements could be true. Which of the statements must be true? (There may be more than one.)
(a) There are no charges inside the surface. (b) The net charge inside the surface is zero. (c) The electric field is zero everywhere on the surface. (d) The number of electric field lines entering the surface equals the number leaving the surface.
1.(a) only 2.(b) only 3.(b) and (d) 4.(a) and (d)Fifteen microseconds is
a. 0.0000015 s. b. 0.000015 s. c. 0.00015 s. d. 0.015 s. e. 15000000 s.