the soviet union was the first country.
Answer:
The roaring of the lion is louder and has low pitch than the sound produced by a mosquito. Hence, they sound so different
Rising warm air transports thermal energy by ( water vapor).
Water vapor.
This is an example of free fall;
For free fall the gravitational acceleration is -9.8 m/s²
From the equation;
S = ut -1/2gt², where S is the height above the ground, U is the initial vertical velocity, t is the time taken.
Therefore;
1.2 = 20t - 1/2(9.8)t²
1.2 = 20t -4.9t²
Thus; the equation is -4.9t² + 20t = 1.2, this is the appropriate answer.
