Use equationi=∫r2dmto calculate the moment of inertia of a uniform, solid disk with mass m and radius r for an axis perpendicular to the plane of the disk and passing through its center. express your answer in terms of the variables m and r.

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Which atomic model was proposed as a result of j. j. thomson’s work?

If element x has 99 protons how many electrons does it have