The sky appears to rotate eastward around Earth each day, but that is a consequence of the westward rotation of Earth
a. True
b. False
Indicate whether the statement is true or false
False
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Three resistors connected in series have individual voltages labeled DV1, DV2, and DV3, respectively. Which of the following expresses the value of the total voltage DVT taken over the three resistors together?
a. DVT = (1/DV1 + 1/DV2 + 1/DV3) c. DVT = (1/DV1 + 1/DV2 + 1/DV3)-1 b. DVT = DV1 = DV2 = DV3 d. DVT = DV1 + DV2 + DV3
A loop of area 0.250 m2 is in a uniform 0.0200-T magnetic field. If the flux through the loop is 3.21 × 10^–3 T•m2, what angle does the normal to the plane of the loop make with the direction of the magnetic field?
a. 40.0° c. 50.0° b. 37.5° d. This is not possible.
Determine the potential difference, VA ? VB, in the circuit segment shown below when I = 2.0 mA and Q = 50 ?C
a.
?40 V
b.
+40 V
c.
+20 V
d.
?20 V
e.
?10 V
Which of the following can make a string of carbon atoms a living thing?
A) The ability of carbon to act as a living thing independently B) The ability of oxygen to act as a living thing when combined with carbon C) The transmission of information from one carbon molecule to another D) The transfer of electrons from one carbon molecule to another