Since I am not a scientist, I can neither confirm nor deny the previous answer. However, I would plug the numbers into the equation myself to double check the work and see if that equation comes up when searching for this kind of problem.
I wouldn’t know where to begin with this, so the only piece of advice I can offer is this: finding the requirement for one person and then multiplying that by twenty, as the previous answer suggests, sounds like a good course of action to me.
It’s also probably the easiest way to do it, since this particular problem offers all the statistics needed to do it this way. We are given the time it takes, how far the elevator has to go, and how much an average passenger wieghs.
I dont get ^ sign
And how you did.the question
A joule is a measurement usually used in chemistry or another form of science. It usually measures some energy. Energy is defined as work done on something when force is executed on the item. Different effects can be applied to an object. One is to push or pull something. Another could be heated. Heat changes things. The heat will melt a substance.
This can be measured by the number of joules of heat it took to melt something. It also depends upon the weight and amount of the material being dissolved. In this case, heat is needed to melt a substance that weights 7.5 grams at its melting point. The temperature of fusion for an element is one hundred twenty-two joules per gram. If you multiply one hundred twenty-two by seven and a half grams, it would be 915 joules per gram.