In the simple bohr model of the eighth excited state of the hydrogen atom, the electron travels in a circular orbit around a fixed proton. the radius of the orbit is 4.28 ✕ 10−9 m, and the speed of the electron is 2.43 ✕ 105 m/s. the mass of an electron is 9.11 ✕ 10−31 kg. what is the force on the electron (in n)? (enter the magnitude.)

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

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

Why do astronauts in the space shuttle weigh less?