А 10-kg tortoise sits on a see-saw 1 meter from the fulcrum. where must a 2-kg hare sit in order to maintain rotational equilibrium? assume the see-saw is massless

What are two different ways you could find the value of a? explain these methods.

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air