1. In a wave, two crests pass a given point each second. The wave has a
frequency of?

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j