The planets revolving around the sun, The moon revolving around the Earth.
Answer: B - 8
Explanation: 8 protons because number of protons is equal to number of atoms in the nucleus.
Since they are both examples of moving waves, they both transmit energy.
In addition to possibly releasing harmful chemicals in the environment, mining is considered B. The most dangerous job in the United States.
Average speed = (total distance covered) / (time to cover the distance)
Total distance = (77km + 66km) = 143 kilometers
Time to cover the distance = 2 hours
Average speed = (143 km) / (2 hours) = 71.5 km per hour
