1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ICE Princess25 [194]
3 years ago
11

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

Physics
2 answers:
Travka [436]3 years ago
8 0

Answer:  option 3

The heat energy from the coffee is transferred to the mug. This is because of entropy change. For a certain time period the coffee release the heat to the adjacent walls of the mug. But after certain period of time both the mug and coffee reaches to the same temperature i.e., they become under equilibrium state.

And also over the time period the heat may also transfers to the surroundings and the mug will cool down and matches to the surrounding temperature.

natima [27]3 years ago
4 0

Answer: Thermal energy from the coffee is transferred to the mug.

Explanation:

Heat loss will occur due to convection radiation and conduction

The mug gains heat from the coffee by conduction

You might be interested in
List the levels of classification in order from most broad (largest number of organisms) to most specific (smallest number of or
Tju [1.3M]
Every organism may classified into seven level of classifications, such that each level contains organisms with similar characteristics. Kingdom is the largest and the broadest level of classification while species is the smallest and most specific level of classification. Therefore from the largest to the smallest the order is as follows:
Kingdom
Phylum
Class
Order
Family
Genus
Species 
3 0
3 years ago
Read 2 more answers
How long will it take a 400 W engine to lift a 100 N object up to a height of 80 m?
Norma-Jean [14]
<h3>Answer:</h3>

20 seconds

<h3>Explanation:</h3>

<u>We are given</u>;

  • Power of the engine as 400 watts
  • Force as 100 N
  • Distance the object is lifted up as 80 m

We are required to determine the time taken.

  • We need to know that power is the rate of work done

Therefore;

  • Power = Work done ÷ time

But, work done  = Force × distance

  • Therefore; In this case;

Work done = 100 N × 80 m

                  = 8000 Joules

  • Since , Power = Work done ÷ time

Then, time = Work done ÷ Power

Thus;

Time = 8000 J ÷ 400 W

       = 20 s

Therefore, the time taken by the engine to lift the object is 20 seconds

4 0
3 years ago
Read 2 more answers
Why copper is classified as a metal.
AveGali [126]

Answer:

It is classified as a metal because of its high ductility, malleability, thermal and electrical conductivity and resistance to corrosion. Copper is a mineral used for our everyday use. It is limited and we have to use it wisely because it is not evenly distributed everywhere and also everyone needs it. Copper is element number 29 on the Periodic Table of Elements. It is also used it electronics and wiring.

hope this helped

:)

8 0
3 years ago
5. If a spring with a 40 N/m spring constant is used to push a 10 kg ball to a speed of 2 m/s,
kolbaska11 [484]

By compressing the spring a distance <em>x</em> (in m), you are storing 1/2 <em>k</em> <em>x</em> ² (in J) of potential energy, which is converted completely into kinetic energy 1/2 <em>m v</em> ², where

• <em>k</em> = 40 N/m = spring constant

• <em>m</em> = 10 kg = mass of the ball

• <em>v</em> = 2 m/s = ball's speed (at the moment the spring returns to its equilibrium point)

So we have

1/2 <em>k</em> <em>x</em> ² = 1/2 <em>m</em> <em>v</em> ²

<em>x</em> = √(<em>m</em>/<em>k</em> <em>v</em> ²) = √((10 kg) / (40 N/m) (2 m/s)²) = 1 m

3 0
2 years ago
The Mechanical Advantage equation is written as ___
kompoz [17]
Mechanical advantage = output force/input force

MA = Fo/Fi
8 0
2 years ago
Other questions:
  • You place a 500 g block of an unknown substance in an insulated container filled 2 kg of water. The block has an initial tempera
    12·1 answer
  • Need Some Help Please :)
    11·2 answers
  • Can someone please help me!
    5·1 answer
  • A loudspeaker located in air generates sound waves of frequency 1,000 Hz. Some of these sound waves enter a pool of water, where
    9·1 answer
  • Why is it important for a muscle to be attached to a fixed origin at one end and a moving insertion at the other? Discuss how th
    14·1 answer
  • This type of water occurs as a liquid resource that is dispersed through numerous holes, pores, fractures, and cavities in bodie
    11·2 answers
  • If an object with a mass of 248kg is lifted 76 meters in 18 seconds, how much power is used?
    6·1 answer
  • CNA Secondary and Preparatory School
    12·1 answer
  • 1 question, brainliest for whoever gets it right.
    14·1 answer
  • A weight trainer lifts a 90.0-kg barbell from a stand 0.90 m high and raises it to a height of 1.75 m. What is the increase in t
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!