What is the relationship n which the ratio of the manipulated variable and the responding variable are constant

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

The photo above shows oil and vinegar in a pitcher. the top make a claim about about the density of the vinegar compared to the density of the oil summarize the evidence to support the claim and explain your reasoning