Need some

you’ve made the hypothesis that the higher the density of a rock the higher the temperature at which it will melt , because a denser rock contains more material

what should the dependant variable be in a experiment testing this hypothesis ?

a) the size of the rock
b) the color of the rock
c) the density of the rock
d) the temperature at which the rock melts

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

A3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular? a 3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular?