A0.20 kg cricket ball is traveling with a horizontal speed of 3 m/s and then is hit with a speed of 15 m/s in the opposite direction. what is the change in the ball’s momentum? what is the impulse?

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

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

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)