A child is perched perilously above a 150m ravine. The child has a mass of 45kg. How much gravitational potential energy does the child have?

U = 66,150 J

Explanation:

Gravitational Potential Energy

Gravitational potential energy is the energy stored in an object because of its vertical position or height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

Where m is the mass of the object, h is the height with respect to a fixed reference, and g is the acceleration of gravity or .

The child of mass m=45 Kg is perched above a h=150 m ravine. His gravitational potential energy is:

U = 66,150 J

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic