Ahelicopter lifts a 84 kg astronaut 19 m vertically from the ocean by means of a cable. the acceleration of the astronaut is g/15. how much work is done on the astronaut by (a) the force from the helicopter and (b) the gravitational force on her

Part a)

Part b)

Explanation:

Part a)

For the force equation of Astronaut we know that

so here we will have

as we know that

so we will have

Part b)

Gravitational force on her is given as

he made 11 calls in one day

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.