When you climb, earth exerts gravitational force on pack in downward direction(pointing towards the center of earth).
In order to climb, you need to work against work done by gravity on the pack.
Hence work done by you = work done by gravity on pack
= Force x displacement = 70 x 30 = 2100 J.
So you need to do 2100 joules of work to lift your pack.
Power is the rate of work done.
Therefore power = work done by you/time(in seconds)
= 2100/600 =3.5 watts
The fourth dimension is technically time. the fourth dimension that you are talking about is actually impossible to comprehend.
A. An electron has far less mass than either a proton or neutron.
Answer:
they r schooling fish
Explanation:
they need to be kept in groups of 5.
It hardens because you are pressing it against something.