7. i am making composites of silicone rubber and copper particles; by mixing thermally conductive particles into the thermally insulating rubber, i can increase the thermal conductivity of the mixture over that of the ‘neat’ rubber. the density of the rubber is 70 lbm/ft3 and the specific gravity of the copper is 9. if my composite is 15 mass percent copper, what is the composition on a volume basis?

the correct choice is a .

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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.

c. magnitude and direction

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.