The difference between speed and velocity is that ________
A) velocity is calculated using a physics equation
B) velocity is the same as acceleration but speed is different
C) they are expressed in different units
D) velocity also includes a direction
D
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The symbol 0 1e is used to represent the ________.
A. proton B. positron C. antiproton D. neutrino E. electron
The creation of elements inside a star is called ______________
Fill in the blank(s) with correct word
At which of the following speeds would the effects predicted by special relativity be most obvious?
A. 0.50c B. 1.11c C. 0.99c D. 0.01c
Dielectrics: An air-filled capacitor carries enough charge to store 6.00 mJ of potential energy. It is then accidentally filled with water in such a way as not to discharge its plates. How much energy does it continue to store after it is filled? The dielectric constant for water is 78 and for air it is 1.0006.
A. 0.077 mJ B. 468 mJ C. 0.04 mJ D. 6.00 mJ