What is the work done by a 20 newton force applied at an angle of 45.0° to move a box a horizontal distance of 40 meters? 8.0 × 102 joules 9.0 × 102 joules 5.6 × 102 joules 3.6 × 102 joules

Aseries circuit consists of a resistor with r = 20 ? , a capacitor with c = 0.01 f, and a decaying battery with e = 300e? 5t. if the initial charge is 0, find the charge as a function of time t

J. j. thomson’s experiment disproved the theory that 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