Physics, 20.07.2019 19:00 saharB

This glass of lemonade is sitting in the hot summer sun. as time passes, in which direction will heat transfer take place?

Answers: 2

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Answers

Answer from: veronica022

Air to the lemonade is the answer

Answer from: joydivision01

From the Sun and the hot air to the lemonade

Explanation:

There are two types of heat transfer involved in this situation:

1) Conduction: the air surrounding the glass of lemonade is warmer than the lemonade itself, and it is in contact with it. Therefore, since heat is always transferred from an object at higher temperature to an object at lower temperature, in this case heat is transferred by conduction from the hot air to the cold lemonade.

2) Radiation: the electromagnetic radiation coming from the Sun also carries energy, which is transferred to the glass of lemonade through the radiation that hits the lemonade.

Answer from: Quest

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006 kilo calorie

then ,802.3 kilo joule will be = 802.3 $\times$ 0.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

Answer from: Quest

Is a vector quantity that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

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This glass of lemonade is sitting in the hot summer sun. as time passes, in which direction will hea...