Five 6 ohm resistors are connected in parallel. Which of the following is their effective resistance? A. 6 ohm
B. 1.2 ohm
C. 30 ohm
D. 5/6 ohm

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.

How does changing the frequency affect the energy of the wave?