what would the gravitational force be between the sun and mars id they were 2.3*10^11 m apart the masses for the sun and mars are 1.99*x10^30 kg and 6.42*10^23 kg respectively

Give an example in which the electrical energy changes to light energy

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory

Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable: