Why is the earth's magnetic field important to being able to have life on earth? a) planets use energy from the magnetic field to do photosynthesis. b) without the magnetic field people would float away from the earth. c) the field holds iron on earth so people do not become anemic. d) it protects the earth from solar winds which contain particles which would destroy the atmosphere and end life on earth.

ice to water 1 water to vapour 2 latent heat

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.