Sam melts a compound and discovers that it does not conduct electricity when melted what can probably be said about the compound a. the nucleus has more protons the neutrons b. it’s elements are completely metallic in nature c. it’s elements are joined by covalent bonds d. the density of the compound is relatively low

D

Explanation: In order for a substance to conduct electricity, its molecules must be closer together in order to conduct electricity. If the substance cannot, we can conclude that it indeed has a low density.

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

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.