A 300 g ball with a speed v of 6.0 m/s strikes a wall at an angle of 30o and then rebounds with the same speed and angle. It is in contact with the wall for 10 ms. (a) Calculate the impulse experienced by the ball. (b) Calculate the average force exerted by the ball on the wall.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

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 are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus