When two voltages are in-phase, they have the same frequency, and there is no time displacement between them. both voltages cross the baseline at the same time, going in the same direction. true / false.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass

What are known as the properties of substances that describe a substance et does not change that substances?