What is the force being applied to an object with a mass of 12 KG and an acceleration of 4M/S

Why is permeable soil best for plants that need a lot of drainage?

What can be found in the ionosphere

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?