How much input force is needed on a 0.5 meter diameter piston in order to lift a 12,000 kg truck on a 3.0 meter diameter cylinder lift. N. (round to tenth -
1 decimal place)

Protons and neutrons are found within the nucleus of an atom

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 sort of waves exhibit the doppler effect?