Answer:
1) 
2)
Explanation:
Given data:
speed of sound v = 1540 m/s
frequency f = 1.40 MHz = 1.40 \times 10^6 Hz
density 
1) we know that
2) we know that
Answer: 32 centimeters is 12.5984 inches
Explanation:
Our solar system formed from a huge cloud of dust and gas called a
c. solar nebula
Based on the nebular hypothesis, our solar system formed from hydrogen gas and interstellar dust. The gas and the dust contracted and formed the early stage of the sun.
First, before determining which variable is which, we go over the definition of each.
The independent variable is the one which is intentionally changed in order to investigate its effect on the dependent variable.
The dependent variable is monitored and changes occur in it due to the changing conditions of the independent variable.
In this case, the location of the African violets is the independent variable as it is intentionally changed, while the rate of growth of the African violets is the dependent variable as it is being measured.
