Two metallic rod of the same material but of different length are heated. smaller rod has
circular area of cross-section but larger rod has rectangular cross-section. will their linear expansivity be the
same or different? give justification of your answer.

v 154.9= 0.9 length length s little over 154.9cm

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.

so easy. just google the electromagnetic waves and it’ll pop up.