Vector V1 is (5i + 7j - 3k), vector V2 is (7i + 2j + 14k), and vector V3 is (i - 2j + 5k). The scalar triple productV1*( V2 x V3) is:
(A) -91
(B) 82
(C) 56
(D) 91
(D) 91
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A vertical wire carries a current straight down. To the east of this wire, the magnetic field points
A) north. B) east. C) west. D) south. E) down.
A certain utility transformer is designed to step up the emf from 1 kV to 25 kV. If the primary has 1000 turns of wire, how many turns of wire does the secondary have?
A. 25,000 B. 4000 C. 2500 D. 40 E. 25 F. Some other result (specify). T. One needs more information to answer.
Mort stands on Earth. Velma moves away from him in a rocket at 299,000 km/s (1000 km/s slower than lightspeed). Mort sends a laser beam toward Velma
As the tip of the beam passes her rocket, Mort observes the beam to move just 1000 km/s faster than Velma, while Velma observes the beam to move at 300,000 km/s. Whose observation is correct? A) Mort's B) Velma's C) both D) neither
In the currently accepted theory for the formation of the solar system, the planets and other minor bodies and the ________ formed at about the same time
Fill in the blank(s) with correct word