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
Umnica [9.8K]
3 years ago
15

How much heat is needed to melt 13.74 kg of silver that is initially at 20°C?

Physics
1 answer:
salantis [7]3 years ago
3 0

Answer:

Q = 4.63 \times 10^6 J

Explanation:

As we know that melting point of silver is

T = 961.8 degree C

Latent heat of fusion of silver is given as

L = 111 kJ/kg

specific heat capacity of silver is given as

s = 240 J/kg C

now we will have

Q = ms\Delta T + mL

\Delta T = 961.8 - 20

\Delta T = 941.8 degree C

now from above equation

Q = (13.74)(240)(941.8) + (13.74)(111 \times 10^3)

Q = 3.1 \times 10^6 + 1.53 \times 10^6

Q = 4.63 \times 10^6 J

You might be interested in
Which statement about electromagnetic waves is true?
Alborosie

Answer:

B

Good luck! Have a great day!

8 0
3 years ago
Read 2 more answers
Plate movement cause volcanoes to
Studentka2010 [4]
Is this a multiple choice question?
If not, well then the answer is that the volcano sort of sinks into the ground. Like it sort of subducts.
Hope this helped!!!:)
<span />
7 0
3 years ago
An element emits a spectrum that____________.a)is evenly spaced.b)is the same as all other elements.c)is unique to that element.
Fittoniya [83]

Answer:

c)is unique to that element

Explanation:

 The spectrum emitted by a element shows the internal electronic structure of that element.We know that all element is having different internal electronic structure that is why all element emits different spectrum.And the spacing between the spectrum is uneven .

Therefore the answer will be option C.

c)is unique to that element

5 0
3 years ago
Suppose you had two magnets, who were attracted to each other, and you brought them together. Then took them apart by separating
IgorLugansk [536]

Answer:4. Two charged objects have a repulsive force of 0.080 N. If the distance separating the objects is tripled, then what is the new force? Explanation: The electrostatic force is inversely related to the square of the separation distance.

Explanation:

8 0
2 years ago
Which best describes the forces identified by Newton’s third law of motion?
egoroff_w [7]
<span>equal and acting on different objects</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • What do you measure with a spring scale?
    11·1 answer
  • How does the movement of particles of matter change when temperature decreases
    12·1 answer
  • How is circular motion different from variable motion?
    9·1 answer
  • Choose heated air or cooled air for the following atmospheric property term: rises
    5·1 answer
  • Billy pushes 15.0 kg block at a rate of 2.5 m/s/s eastward. What is the net force Billy applied to the block?
    7·2 answers
  • (PLEASE HELP ASAP) Which chemical equation models the law of conservation of mass?
    5·2 answers
  • How does music affect our brain ?
    12·1 answer
  • Do this for alot of points
    15·1 answer
  • A tornado moving cross a street with a force of 600 N pushes a trailer a distance of 25 m.
    9·1 answer
  • The speed of light is a constant and approximately equal to 300,000,000 meters per second.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!