I tried the experiment of dropping candy into a liter of soda and caused a big explosion of foamy soda. Is that a physical or Chemical Change

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?