List the three useful ways in physics to multiply vectors
What will be an ideal response?
1. Multiplication of a vector by a scalar
2. Multiplication of one vector by a second vector to produce a scalar
3. Multiplication of one vector by a second vector to produce another vector
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If the redshifts of quasars arise from the expansion of the universe yet they have brighter magnitudes than galaxies with the same redshifts, the quasar must
a. be very small. b. be within the Local Group. c. be a single star with an extremely large mass. d. be moving toward Earth with a large radial velocity. e. emit a very large amount of energy per second.
An astronaut lands on a previously unknown planet of radius 2350. km and she measures the acceleration of gravity to be 3.20 m/s2
(a) What is the mass of this new planet? (b) What does the astronaut weigh on this new planet if she weighs 384. N on Earth?
Ultraviolet light has ________ wavelength and ________ frequency relative to visible light.
A. shorter; larger B. longer; smaller C. longer; larger D. shorter; smaller