What is the mass number of an atom that has 12 neutrons and 11 protons?
24
23
12

Ajoint produces movement when its angle decreases. which type of movement is it?

Calculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energycalculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energy

0.5 kg of silver increases temperature from 0 celsius to 7 celsius when heat is added how much heat energy produced this change in temperature