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
AURORKA [14]
3 years ago
10

Calculate the change in internal energy of the following system: A balloon is cooled by removing 0.659 kJ of heat. It shrinks on

cooling, and the atmosphere does 385 J of work on the balloon.
Physics
1 answer:
bixtya [17]3 years ago
5 0
<h2>Answer:</h2>

-310J

<h2>Explanation:</h2>

The change in internal energy (ΔE) of a system is the sum of the heat (Q) and work (W) done on or by the system. i.e

ΔE = Q + W       ----------------------(i)

If heat is released by the system, Q is negative. Else it is positive.

If work is done on the system, W is positive. Else it is negative.

<em>In this case, the system is the balloon and;</em>

Q = -0.659kJ = -695J    [Q is negative because heat is removed from the system(balloon)]

W = +385J  [W is positive because work is done on the system (balloon)]

<em>Substitute these values into equation (i) as follows;</em>

ΔE = -695 + 385

ΔE = -310J

Therefore, the change in internal energy is -310J

<em>PS: The negative value indicates that the system(balloon) has lost energy to its surrounding, thereby making the process exothermic.</em>

<em />

<em />

You might be interested in
The theory of continental drift is supported by all of the following EXCEPT
True [87]
Except for climate which has changes over the eons.
8 0
3 years ago
Explain how thermal energy (temperature) affects chemical changes.
Monica [59]
If bonds are broken, the energy is released, and if bonds are formed, energy is absorbed. During conversions from chemical energy to thermal energy, the energy stored in the chemical bonds are released and this energy causes surrounding molecules to move faster thus increasing the thermal energy of a substance.
8 0
3 years ago
According to the periodic table, which of the following elements has five energy levels
Alex Ar [27]
<span>Antimony I am pretty sure is one. </span>
7 0
3 years ago
What material would make the best light bulb filament?
DanielleElmas [232]
The answer is B ! As in light bulb tungsten is working as resistor !
7 0
3 years ago
Read 2 more answers
1. What is work done in holding a 15kg suitcase while waiting for a bus for 15 minutes?
Tems11 [23]
Work is (force applied) x (distance through which the force moves).

Since the suitcase doesn't move up or down during the 15 minutes,
no work is done ... zero, zip, nada ... according to the real Physics
definition of 'work'.
6 0
3 years ago
Other questions:
  • Saved
    9·1 answer
  • What is the difference in the charges on a ballon rubbed in your hair and a glass rod rubbed
    5·1 answer
  • Is the mechanical form of power different from the electrical form?
    5·1 answer
  • A change in a populations genes from one generation to the next due to chance or accident is refrerred as a
    5·1 answer
  • If an airplane is flying directly north at 300.0 km/h, and a crosswind is hitting the airplane at 50.0 km/h from the east, what
    7·1 answer
  • Energy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is one kilocalorie, defined as 1 kc
    11·1 answer
  • What is the central peak in the central Arzachel
    6·1 answer
  • What happens to steam as it releases thermal energy inside a radiator?
    12·1 answer
  • What magnification will be produced by a lens of power –4.00 D (such as might be used to correct myopia) if an object is held 43
    7·1 answer
  • ⦁ A certain resistor is required to dissipate 0.25 W, what standard rating should be used?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!