Which term refers to the time interval between the passage of successive wave crests?
a. wave height
b. wave period
c. wave speed
d. wavelength

Which changes of state do the labels represent? a: b: c:

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

What kind of simple machine is a catapult?