What is the mass number of this atom?
a.3
b.4
c.7
d.10

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

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

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