If y = 0.02 sin (30x ? 400t) (SI units), the frequency of the wave is
a. 30 Hz.
b. 15/? Hz.
c. 200/? Hz.
d. 400 Hz.
e. 800? Hz.
c
Physics & Space Science
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Series/Parallel Circuits: If emf of the ideal battery is V = 4.0 V, what is the current through R6 for the circuit shown in the figure?
A. 0.0077 A B. 0.017 A C. 0.040 A D. 4.0 A
Physics & Space Science
Two nuclei which share the same mass number A always are (Hint: Eliminate any wrong answers.)
a. stable. b. unstable. c. isotopes. d. isobars. e. radioactive.
Physics & Space Science
Magnetic field lines come out of the south pole of a magnet and enter at the north pole
Indicate whether the statement is true or false
Physics & Space Science
An object that is moving with an acceleration different from zero will always have a(n) ______________ velocity
a. changing b. increasing c. constant d. decreasing
Physics & Space Science