that was a tip equation i got from someone else but they couldn't identify what the 33,000 was which is why I'm skeptical...So -
There are 172,000 cubic ft. of water and
1 cubic feet of water=28.32 kg(approximately)
AND
215 feet = 65.532 meters...
I did find something that used c = d / Δ t - where c was speed of sound so
Δ t = d / c = 15,840/344.4 = 46 seconds but that seems too long a delay for three miles no?
As far as thunder and lightning, lightning strikes first b/c it travels faster in air than sound. The speed of a sound...
Homework Statement
One of the Niagara turbines uses 172,000 cubic feet of water per minute under a head of 215 ft. What is the horsepower developed?
Homework Equations
The Attempt at a Solution
Below is "research findings" and attempt at a solution but I'm a little leary of the...
Homework Statement
A transformer has 500 turns in its primary coil and 4000 turns in its secondary. (a) What will be the voltage in the secondary if the primary voltage is 110? (b) If 5 amperes flow through the secondary circuit of the transformer, what will the current in the primary be...
Still a little lost here:
In general, at 68 F (20 C) sound travels at 1130 ft/sec (344.4 m/sec.)
3 miles = 15 840 feet
3 miles = 4 828.032 meters
but not sure how to put it together in equation format?
How would you convert: 213.36 m/s into ft/s?
Thanks for the tip!
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Homework Statement
A candle is placed 10 inches from a convex lens whose focal length is 5 in. Where will the image be formed? How large an image is formed?
Homework Equations
The Attempt at a Solution
Here we use the following formula to find where the image will be formed...
Homework Statement
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Homework Statement
My teacher assigned a horsepower problem except that we never covered horsepower. Here's my attempt:
One of the Niagara turbines uses 172,000 cubic feet of water per minute under a head of 215 ft. What is the horsepower developed?
Homework Equations
The...