What is conduction and convection and radiation

your own answer

Conduction is the process by which heat or electricity is transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions. Convection is the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat. Radiation is 1.) the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization. 2.)divergence out from a central point, in particular evolution from an ancestral animal or plant group into a variety of new forms.

$527.7.if the following was the question  $527.7 is the answer.students who are trying to raise funds have an agreement with a local pizza chain. the chain has agreed to sell them pizzas at a discount, which the students can then resell to families in the local community for a profit. it is expected that of the 500 families in the community, at most 70% will buy pizza. based on a survey of their personal preferences, the students believe that they should order no more than 120 cheese pizzas, no more than 150 pepperoni pizzas, and no more than 100 vegetarian pizzas. they also want to make sure that at least 20% of the total pizzas are cheese and at least 50% of the pizzas are pepperoni. they make a profit of $1.45, $1.75, and $1.98, respectively, for each cheese, pepperoni, and vegetarian pizza they resell. how many pizzas of each type should they buy?