They might be an example of Lubricants
Answer:
The correct solution is option A "10 meters".
Explanation:
The given values are:
Wave X,
Frequency,

Wavelength

Wave Y,
Frequency,

Let its wavelength = 
As we know,
⇒ 
For both waves, medium is same then
⇒ 
⇒ 
then,
⇒ 
On substituting the estimated values in the above equation, we get
⇒ 
⇒ 
⇒ 
Im not really sure but try Mendel genetics states laws are now part of theory of biological eveolotion
Also how silly would it be if Darwinist entire work was erased by another theory that doesn't even add information it is its entire work and Mendel just made another theroy
Answer:
M = 50 kg / sec * 60 sec = 3000 kg water that falls
PE = M g h initial potential energy of water
PE = 3000 kg * 9.8 m/s^2 * 20 m = 588,000 joules of energy lost