When the atoms electrones step down to lower energy levels in thin cloud of hot gas, what is produced?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

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.

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes