Awoman stands on a scale in a moving elevator. her mass is 60.0 kg, and the elevator’s mass is 815 kg. starting from rest, the elevator accelerates upward. during the acceleration, there is a tension of 9410 n in the elevator’s hoisting cable. what does the scale read during the acceleration ?

65.81kg

Explanation:

From a forces diagram of the whole elevator:

  Solving for a we get the acceleration of both the woman and the elevator:

Nw, the forces acting on the woman are these:

  Solving for N:

N = 645N (using g=9.8)    This value divided by the gravity gives us the reading on the scale:

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.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it