Physics, 03.12.2019 21:31, acoverupoze5th

Hot coffee in a mug cools over time and the mug warms up. which describes the energy in this system?

the average kinetic energy of the particles in the mug decreases.

the average kinetic energy of the particles in the coffee increases.

thermal energy from the mug is transferred to the coffee.

thermal energy from the coffee is transferred to the mug.

Answers: 2

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answered: Jasten

Thermal energy from the coffee is transferred to the mug.

Explanation:

1) Temperature is a measure of average kinetic energy of the particles in a substance.

2) The higher the kinetic energy the higher the temperature

3) Thermal energy is the kinetic energy transferred from a hot substance to a cold one.

4) Therefore, since the coffe is hot and the mug is cold:

a) The kinetic energy will be transferred from the hot coffe to the cold mug, which is that the thermal energy from the coffe is trnasferred to the mug (the last option is true).

b) The mug, which is colder than the coffe initially, gets warmer, so the average kinetic energy of the particles in the mug increases, making the first choice false.

c) The coffee, which is hotter than the mug initially, is cooling over time, so the average kinetic energy of the particles in the coffe decreases, making the second choice false.

d) The thermal energy is transferred from the hot coffe to the cold mug, so the third choice is false, and the only true statement is the last choice.

answered: estherklein15ov3vx9

The correct answer among all the other choices is "Thermal energy from the coffee is transferred to the mug." This statement describes the energy in this system. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.

answered: Guest

real, smaller and upside-down. so the answer should be b.

answered: Guest

You need to be more specific. i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time, then constant velocity is a straight line . . i.e. a line that has constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant velocity is a piece of line that lies on the x-axis . . it's value is zero.

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Hot coffee in a mug cools over time and the mug warms up. which describes the energy in this system?...