Akoala starts i'm the ground and climbs a tere yo a height ir 19m. if the koala has a mass of 12 kg, how much gravitational potential energy does ir gain?

The GPE gained by the Koala by climbing a height of is

Explanation:

Gravitational potential energy (GPE) is the energy stored in an object due to its position above the Earth's surface.

This is due to the force of gravity acting on an object.

GPE ,where

The units of GPE = Joules

Now we have been given.

The mass of the Koala that is

Height it has climbed is

And the value of gravity acting on the object

Plugging the values of we have

GPE

So the gravitational potential energy gained by the Koala

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e