Where are the questions so that I can deliver a more accurate answer.
A balanced force is upon it because balanced means both sides are equal so they cancel each other out, while unbalanced means one side is weaker/stronger than the other and in this case its in a state of rest so the net force would be equal/balanced.
Answer:
Volume = 25 cm^3
Explanation:
We know that the density of any kind of substance or material is equal to:

To approximate the density of the block of material, we use the data on mass and the volume of the substance. Density is the mass of a substance over the volume it occupies. The given is 1 x 10^4 kg mass and a volume of 2 m3. We divide the two and get 5000 kg/m3 or 5 g/cm3.
Answer: It is brighter
Explanation: We are getting closer to the light because the earth is expanding.