The mass of a cubic meter of water is
A) 1 kg.
B) 10 kg.
C) 100 kg.
D) 1000 kg.
E) 9800 N.
Answer: D
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a. True b. False Indicate whether the statement is true or false
Two capacitors with CA greater than CB are connected in parallel with a battery. Which of the following is true?
a. There is more potential difference across CA. b. There is more potential difference across CB. c. There is the same charge stored on each capacitor. d. There is the same potential difference across both capacitors.
A known weight W is supported at B by two separate cables, AB and BC. Later cable BD with known tensile force TBD 5 W/2 is added to prevent oscillations. The force in cable AB, TAB, is (in terms of weight W):
(A) 20.98W
(B) 0.96W
(C) 20.84W
(D) 20.76W
Two thin 80.0-cm rods are oriented at right angles to each other. Each rod has one end at the origin of the coordinates, and one of them extends along the +x-axis while the other extends along the +y-axis
The rod along the +x-axis carries a charge of -15.0 µC distributed uniformly along its length, and the other rod carries +15.0 µC uniformly over its length. Find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e = 1.60 × 10-19 C, ?0 = 8.85 × 10-12 C2/N • m2)