Answer:
Mass, m = 16.02kg
Explanation:
Given the following data;
Force, F = 157N
Since it's a free fall, acceleration, a = g = 9.8m/s² (acceleration due to gravity).
To find the mass;
Force is given by the multiplication of mass and acceleration.
Mathematically, Force is;
Where;
Making mass (m) the subject of formula, we have;
Substituting into the equation;
Mass, m = 16.02kg
Therefore, the mass of the rock is 16.02kg.
Answer: The relationship between " kWh " and " Joules " are :
1 kWh=1000 Watt×[60×60] seconds
1 kWh=10
3
W×3600 s
1 kWh=3.6×10
6
J
Frequency is the inverse of the time period. The frequency of the wave will be 0.02.
Frequency is defined as the number of cycles per second. The time to make one complete cycle is frequency.
Frequency = 1 / period
F= 1 / T
F=1/50 sec
F=0.02 Hz.
Hence, the frequency of the wave will be 0.02.
To learn more about frequency refer to:
#SPJ2
Answer:
Radio waves are a type of electromagnetic radiation with frequencies ranging from 300 GHz to as low as 3 Hz, and wavelengths ranging from 1 millimeter (0.039 inches) to 100 kilometers (62 miles). Similar to all other electromagnetic waves, they travel at the speed of light.