# Lewis Johnson

Experienced Physics and Maths Teacher

104Students helped
£40Per hour
Chemistry

Asked by Oliver · 2 months ago

In terms of structure and Bonding, explain the similarities and differences of copper and graphite?

Copper has metallic bonding which goes throughout the structure, whereas graphite has strong carbon bonds in sheets, but those single-atom-thick sheets have relatively weak electric bonding between them. This means graphite can rub off on objects, in one direction, but is hard to tear apart in other directions. Copper is strong in all directions, but not as strong as carbon-graphite sheets.

Physics

Asked by Daria · 2 months ago

When the toy car rolls down the sclope ,some energy is transfered to the surrounding as the thermal energy how should i calculate the amount of energy transferred to the surrounding?

Energy at top of slope: GPE calculated with mhg (where h is vertical distance to bottom of slope) Energy at bottom of slope: Kinetic energy (1/2 m v^2) Difference in energy = thermal energy

# Lewis Johnson

Experienced Physics and Maths Teacher

104Students helped