Fig. 1.1 shows a diver working below the surface of a lake. The density of the water in the lake is 1030 kg / m 3 , the atmospheric pressure at the surface is 1.0 × 10 5 Pa and the gravitational field strength is 10 N / kg. The diver inflates a balloon with air at a depth of 25 m and attaches the balloon to a tray of objects. Calculate (i) the pressure due to 25 m of water,

that is probably false!

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.

cant without the picture! ?