What is the magnitude of the net force acting on this box? A) 4.0 N

B) 2.8 N - (Wrong Answer, already checked)

C) 10 N

D) 1.0 N

What type of nuclear decay causes the atomic number of an element to increase by 1?

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

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.