Find the work done in moving an object along a vector r = 3i + 2j - 5k if applied force is f = 2i - j -k

Protons and neutrons are found within the nucleus of an atom

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?