This is the answer to question 19. If it’s not clear, send me a message.
The answer is true, this is how dams work as the water goes through ot it pushed the turbines inside to generate electricity.
I hope this helps.
Baking a cake is a chemical reaction due to heat helps baking powder produce tiny bubbles of gas, which makes the cake light and fluffy. Heat also causes protein from an egg to change and make it firm.
Baking powder being CO2
NaHCO3 + NaHC4H4O4 ===> Na2C4H4O4 + CO2(g) + H2O
Answer:

Explanation:
The relationship between the speed of a wave, its frequency and its wavelength is given by the wave equation:

where
v is the wave speed
f is the frequency of the wave, which is the number of cycles completed by the wave in one oscillation
is the wavelength, which is the distance between two consecutive crests of the wave
For the wave in this problem we have:
v = 5000 m/s is the speed
is the wavelength of the wave
Solving for f, we find the frequency:

Hi,
10,000,000sec = 16.53 weeks
Hope this helps.
r3t40