If light needs matter, how doe it move through space? this is my first question.

In the electric current flow, it is found that the resistance (measured in the units called ohms) offered by a fixed length of wire of a given material varies inversely as the square of the diameter of the wire. If a wire 0.01 in.

If a flea can jump straight up to a height of 21.1 cm, what is its initial speed as it leaves the ground, neglecting air resistance?

Science is two things. Describe what those two things are.

Which of the following best describes a chemical equation that demonstrates the law of conservation of matter? A. It has five total atoms on each side. B. It has four molecules on each side. C. It has two compounds on each side. D.

Kristine said that an ice cube gains heat when placed in a warm glass of water. Eric said that a hot cup of tea loses heat to cold hands. Who has made the correct statement with regard to heat transfer? Kristine is correct. Eric is correct.

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series