A machine with 75% efficiency does 3,300 J of work. Using the machine, how much work did you do?

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring

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:

What ions are formed when hcl dissolves in water?