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
romanna [79]
3 years ago
7

Barbara is conducting an experiment to observe heat flow. She places one piece of metal in a freezer at -18 degrees Celsius (°C)

and a second piece of metal in an oven at 200 °C. After 2 hours, she takes the metal pieces out of the freezer and oven and places them both in the same beaker of boiling water for two minutes. Which of the following best describes how some of the heat will initially move in this system?
Heat will flow from the frozen metal into the hot metal.


Heat will flow from the boiling water into the hot metal.


Heat will flow from the boiling water into the frozen metal.


Heat will flow from the frozen metal into the boiling water.
Chemistry
1 answer:
yulyashka [42]3 years ago
4 0

<u>Answer:</u> The correct answer is heat will flow from the boiling water into the frozen metal.

<u>Explanation:</u>

According to the law of conservation of energy, energy cannot be destroyed nor created but it can be transformed from 1 form to another form.

There are 3 processes of heat transfer:

  1. <u>Conduction:</u> This type of heat transfer occurs when there is direct contact between the two objects.
  2. <u>Convection:</u> This type of heat transfer occurs when there is a movement of fluid (liquid or gas) due to the movement of hot layers to the top and cold layers to the bottom which leads to convection currents.  
  3. <u>Radiation:</u> This type of heat transfer occurs when there is a direct transfer of energy through space.

The heat moves from a hot surface to a cold surface to maintain equilibrium.

We are given:

A metal is placed in a freezer (cold object) and another metal is placed in an oven (hot object) and then both the metals are placed in boiling water.

Initially, the heat will flow from the boiling water (hot object) into the frozen metal (cold object) to maintain equilibrium

Hence, the correct answer is heat will flow from the boiling water into the frozen metal.

You might be interested in
How does the density of a gas affect the speed of sound
ZanzabumX [31]

Increased density decreases the speed of sound in a medium. While increased density can mean increased rigidity, or stiffness, it is not always the case. Greater density can be due to each molecule or atom having more momentum, and being slower to respond to the vibration of its neighbor.

4 0
2 years ago
What is normality and molarity of the concentration of solution?​
svlad2 [7]

Answer:

Normality is the number of gram equivalents of solute divided by the volume in liters.

The molarity is the amount of moles in solute divided by the volume in liters.

Moles are the molar mass times grams if you're curious

I hope this helps and good luck!

4 0
2 years ago
Read 2 more answers
Cathode rays were shown to be a stream of _____. protons electrons neutrons quarks
Murljashka [212]

It's B) electrons, is the right answer

7 0
3 years ago
When in history was the origin of Sci-Fi as<br> genre? <br><br> Why then?
sergejj [24]

Answer:

The term science fiction was popularized, if not invented, in the 1920s by one of the genre's principal advocates, the American publisher Hugo Gernsback. The Hugo Awards, given annually since 1953 by the World Science Fiction Society, are named after him.

Explanation:

4 0
2 years ago
Small bodies from which the planets formed
Aleks [24]
Small bodies from which the planets are formed is called : Planetesimal.
Planetesimals that have survived to the current day are valuable to scientists since they contain information about the Solar System's formation.
7 0
2 years ago
Read 2 more answers
Other questions:
  • Which of these is the best example of Newton's third law?
    12·1 answer
  • The average propane cylinder for a residential grill holds approximately 18 kg of propane. How much energy (in kJ) is released b
    13·1 answer
  • What is a function of chloroplast​
    15·2 answers
  • Will name Brainliest
    9·1 answer
  • From which plant can benzoic acid be obtained from?​
    11·1 answer
  • Find the density of Liquid A: Liquid A: Mass-138g Volume – 100 mL.
    6·1 answer
  • HELP WHAT IS THE ANSWER TO ANY OF THESE !!!
    11·2 answers
  • Susana heats up a sample of red crystals. While the sample is being heated, a gas is released and a blue powder is left after th
    13·2 answers
  • What element is solid at room temperature shiny malleable and a good conductor of heat
    6·1 answer
  • Stephan claims that Earth has both a gravitational field and a magnetic field. Which statement best supports his claim?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!