Aspacecraft is moving at 225 m/s upward; its momentum is 45,000 kg·m/s upward. what is its mass? a. 200 kg b. 100 kg c. 45,000 kg d. 10,125,000 kg

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

Determine the net charge of the predominant form of arg at (a) ph 1.0, (b) ph 5.0, (c) ph 10.5, and (d) ph 13.5

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero