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
Burka [1]
3 years ago
7

A student drops two metallic objects into a 120-g steel container holding 150 g of water at 25°C. One object is a 206-g cube of

copper that is initially at 88°C, and the other is a chunk of aluminum that is initially at 5.0°C. To the surprise of the student, the water reaches a final temperature of 25°C, precisely where it started. What is the mass of the aluminum chunk?
Physics
1 answer:
spayn [35]3 years ago
3 0

Answer:

Mass of the aluminium chunk = 278.51 g

Explanation:

For an isolated system as given the energy lost and gains in the system will be zero therefore sum of all transfer of energy will be zero,as the temperature will also remain same

A specific heat formula is given as                  

Energy Change = Mass of liquid x Specific Heat Capacity x Change in temperature

                                       Q =  m×c×ΔT

                        Heat gain by aluminium + heat lost by copper  = 0    (1)

For Aluminium:

      Q = m\times0.897\frac{J}{g.k}\times(25-5)

      Q = m x 17.94 joule

For Copper:

Q= 206g\times0.385\frac{J}{g.k} \times(88-25)

       Q= 4996.53 Joule

from eq 1

     m x 17.94 = 4996.53

     mass of aluminium = \frac{4996.53}{17.94} g

    Mass of the aluminium chunk = 278.51 g

                         

You might be interested in
Scientists might make a computer model of volcanic eruptions. What is the
Anna [14]

Answer:

Computer Model May Help to More Accurately Predict Volcano Eruptions. Scientists at the GFZ German Research Center in Potsdam, Germany, have developed a computer model which they say boosts the accuracy of volcanic eruption prediction.

Pls Mark As Brainliest

7 0
1 year ago
A flat horizontal surface with an area of 518 cm^2 is inside a uniform electric field of 1.33 x 10^4 N/C. The angle between the
GarryVolchara [31]

Answer: 576.48 N*m^2/C

Explanation: In order to calculate the electric flux through the any surface we have to take into account the scalar product between the electric field vector and the normal vector to the surface.

So we have:

ФE= E*A= 1.33 * 10^4*0.0518* cos (33.2°)= 576.48 N*m^2/C

3 0
3 years ago
Whats the speed of darkness?
lianna [129]
The same speed of light, the fastest possible

darkness is just the absence of light therefore once light leaves darkness returns. making darkness have the same speed of light
3 0
3 years ago
If an orange falls off the table, what causes it to stop?​
emmasim [6.3K]

The floor or chair absorbing the force of the impact from the orange causes the orange to stop.

7 0
3 years ago
What is the electron configuration of oxygen? 1s22s22p3 1s2, 2s6, 2p4, 3s2 1s2, 2s2, 2p4, 3s2 1s22s22p4
vaieri [72.5K]

oxygen's atomic number is 8

1s22s22p4 is the electron configuration

2+2=4 4+4=8

7 0
3 years ago
Read 2 more answers
Other questions:
  • An 85,000 kg stunt plane performs a loop-the-loop, flying in a 260-m-diameter vertical circle. at the point where the plane is f
    14·1 answer
  • When is an atom stable? A. when it has a full outer orbit. B. when it has the same amount of elections as protons. C. when it ha
    11·2 answers
  • A drag racer starts her car from rest and accelerates at 10.9 m/s^2 for the entire distance of 226 m. How long did it take the c
    9·1 answer
  • SOMEONE HELP PLEASE ASAP I BELIEVE THE ANSWER IS C OR D
    7·1 answer
  • How many electrons would it take to make up 1 C of charge? ( Coulomb’s law )
    12·1 answer
  • Speed=100m/sec<br> Frequency=10 Hz<br> Wavelength=?
    9·1 answer
  • A roller coaster rider traveling in a straight line changes from a speed of 4 m/s to 16 m/s in 3 seconds. What is the accelerati
    6·1 answer
  • How many sig figs does 0.009 have?
    9·1 answer
  • Which one do I press guys?
    9·1 answer
  • 4.- Una vagoneta de 1000 kg de peso parte del reposo en el punto 1 y desciende, sin rozamiento, por la vía indicada en la figura
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!