Friction between 2 objects cause which part of the atom to jump from one object to the other a. atoms
b. protons
c. neutrons
d. electrons

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

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 are the similarities & differences between a thermistor and a light dependent resistor in physics?