You walk into an alley and on the roof of the buildings on either side is a nemesis. The nemesis on one side is throwing a bowling ball and the nemesis on the other side is throwing a ping pong ball. The balls are thrown with the same momentum. Neglect air resistance and gravitational acceleration and assume a perfectly plastic impact. Which ball do you need to dodge like your life depends on it

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery