Determine the order of magnitude of the following small number by entering the appropriate exponent n below: 4,870×1021kg≈10nkg n=

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

What are two different ways you could find the value of a? explain these methods.

Which component of the earth’s atmosphere is decreased due to photosynthesis?