Components: A vector in the xy-plane has an x component of -7.50 units. What must be the y component of this vector so that its magnitude is 10.0 units. (Note: There are two possible answers.)
What will be an ideal response?
+6.6 units and -6.6 units
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White dwarfs have such a low luminosity that even the nearest white dwarfs are not visible to the naked eye
Indicate whether the statement is true or false
A heat engine
A. converts all the heat supplied to it to mechanical work B. always rejects some heat to a lower temperature reservoir C. only needs one reservoir to operate
Thumbprint-like impressions
A. Crater |
B. Stone meteorites |
C. Tektites |
D. Meteors |
E. Regmaglypts |
F. Meteor showers |
If the nonzero momentum of a particle with mass is doubled, what happens to its total energy?
a. It also doubles. b. It increases, more than doubling. c. It stays the same since total energy is a constant for a given particle. d. It increases, but less than doubling.