F=W=mg
12N(given)= m*9.8
m= 1.22 kg
Answer:
Sound intensity is measured with a sound level meter or Sound pressure Level (SPL) Meter.
Explanation:-
It measure sound intensity is the sound pressure level. The unit of measurement is decibels.
Power is the rate of energy. Mathematically, it is
Power (p) = Energy(E) / Time(t)
Hope this helps!
Answer:

Explanation:
As we know that the orbital speed of the satellite is given as

also we know that
time period of the revolution is given as

now from above equation we know that


so we will have

now plug in all data in this equation


The oldest lunar rock samples are approximately 4.4 billion years old and composed of anorthosite, a mineral that crystallizes and rises to the top of a lava ocean.