What does the atomic number respresent?

(From my science homework)

An electronic device can be modeled as a resistor that consumes an average of about 0.940 W of electrical power and operates on 3.80 V. What would be the power consumed by the resistor if it was operated on 3.50 V? a. 1.11 W b. 0.798 W c. 0.866 W d.

The atomic number of an element is 22 while its mass number is 48. How many neutrons does the element have

Rust formation is represented as iron + oxygen rust + energy. Which describes this reaction?

according to when is a planet not a planet scientist determined that pluto was not a planet what were the causes that led them to this conclusion

Is fertilizer a living thing or non living thing?

Whats an example of projectile motion

The fact that the sun rises and sets at different times during the day depending on the time of year is an example of a data trend. True or False

What sample of matter is a single substance

What is a hydraulic machine and what is its purpose? Explain how a simple hydraulic machine performs work.

Is the muzzle velocity a scalar or vector quantity?