In his experiment, rutherford shot alpha particles at which type of metal?
a. iron
b. gold
c. silver
d. neon

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

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

The electric field inside a cell membrane is 8.0mn/c. what's the force on a singly charged ion in this field?