Answer:
To increase the volume of moving water, impoundments or dams are used to collect the water. An opening in the dam uses gravity to drop water down a pipe called a penstock. The moving water causes the turbine to spin, which causes magnets inside a generator to rotate and create electricity.
The answer to the question stated above is letter a. run at highest <span>speed.
</span>Jumpering out the resistors in a resistance-controlled three-speed fan will cause the motor to <span>run at highest speed. If resistors are jumpered, the three-speed fan will over speed and probably burns out.</span>
Answer:
d. 2063 Hz
Explanation:
Given that the source of the sound (the ambulance) is heading towards the observer, we have;
fL= (v ± vL/v ± vS) fS
Where;
v = speed of sound = 340 m/s
vL = velocity of the listener = 15 m/s
vS = velocity of the source = 25 m/s
fS = frequency of source = 2 kHz
Since the source is moving towards the observer we subtract;
Substituting values;
fL = (340 - 15/340 - 25)2 *10^3
fL = 2063Hz
Answer: i think the answer is 314.57
Explanation: please give me brainlyest if im right
