Which of the following factors contributes most to the amount of energy required to change the temperature of a sample of water by 10C?
1 The source of the sample of water
2 The size of container holding the sample
3 The initial temperature of the sample
4 The amount of water in the sample

Explanation:So, when mass of all the given species is constant. Then change in temperature of iron (Fe) will be the largest because it has the least value of specific heat. Thus, we can conclude that out of the given options iron (Fe) will have the largest temperature change if the same amount of heat is added to each of them.So i think it would be number 3

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.