A 350 gram mass is tied to a string and spin in a horizontal circle with a radius of 11.0cm. The speed of the mass is held constant and the period of rotation is 0.6seconds. a)What is the angular speed of this mass? b)What is the linear speed of this mass?​

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

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