Author Question: What is the frequency (in Hz) of a wave whose displacement is given y = 0.5 sin(0.20x + 120t), where ... (Read 21 times)

vinney12 · **on:** Jul 27, 2018

What is the frequency (in Hz) of a wave whose displacement is given y = 0.5 sin(0.20x + 120t), where x and y are in cm and t in seconds?

A) 0.5 Hz
B) 19. Hz
C) 120 Hz
D) 10 Hz
E) 0.120 kHz

Question 2

Consider an RLC circuit. The impedance of the circuit increases if R increases.

A) always true
B) true only if XL is less than or equal to XC
C) true only if XL is greater than or equal to XC
D) never true