It’s E cause water when it freezes it expands and water flows down
Answer:
t=4.86s
Explanation:
To find the wavelength you use the following formula:

v: speed of sound = 343m/s
f: frequency = 400Hz
λ: wavelength of the sound
By doing λ the subject of the formula and replacing the values of f and v you obtain:

Now, to calculate the time that sound takes to reach the last row you use:

t: time
d: distance to the last row = 1947m

hence, the time is 4.86s
Ok so the formula is d=vi(t)+½at² and when you substitute it you should get 172.5meters
Answer:
Motor converts Electrical energy into Mechanical Energy, while A generator converts Mechanical energy into Electrical energy. thankyou
Explanation:
C. Number of protons = atomic number; number of neutrons = mass number - atomic number