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
If the refractive index of water is 1.33, then its critical angle is...
natulia [17]
I c
​ =48 ∘45 1
. Fkfkkvkv
7 0
3 years ago
Which is an example of gaining a static charge by conduction?
lianna [129]

Answer:

shuffling shoes

Explanation:

7 0
3 years ago
Suppose we measure the energy stored in some inductor to be E when there is a current I running through it. If I double the curr
slavikrds [6]

Answer:

If I double the current in the inductor, the new total energy will become 4E (option f).

Explanation:

The coil or inductor is a passive component made of an insulated wire that stores energy in the form of a magnetic field due to its form of coiled turns of wire, through a phenomenon called self-induction. In other words, inductors store energy in the form of a magnetic field. The energy stored in the space where there is a magnetic field in the inductor is:

E=\frac{1}{2} *L*I^{2}

where E is Energy [J], L is Inductance [H] and I is Current [A].

If you double the current in the inductor, then the new value of the current is I'= 2*I. So replacing the new total energy is:

E'=\frac{1}{2} *L*I'^{2}=\frac{1}{2} *L*(2*I)^{2}=\frac{1}{2} *L*4*I^{2}=4*\frac{1}{2} *L*I^{2}

Then:

E'=4*E

<em><u>If I double the current in the inductor, the new total energy will become 4E (option f).</u></em>

3 0
3 years ago
Gravity is greater when there is
Artist 52 [7]
More mass and less difference
8 0
3 years ago
Read 2 more answers
 1–Find the components of each vector
navik [9.2K]

Answer:

ANSWERS ARE 100 % correct

Explanation:

trust me

7 0
3 years ago
Other questions:
  • Please help!!!! 15 points!!!
    13·1 answer
  • What effect does time have on the speed of a moving object
    5·1 answer
  • Newtons third law of motion describes how forces act in pairs true or false HELPPPP!!!!
    11·2 answers
  • A runner starts at position zero and moves in one direction to position 12m 3. What is the distance traveled by the runner?
    10·1 answer
  • What is the complex and non linear process of energy flow between species called
    10·2 answers
  • Number 25 and 26 please!!!
    13·1 answer
  • A circuit has a voltage drop of 12 V across a 30 2 resistor that carries a
    6·2 answers
  • A block of weight 1200N is on an incline plane of 30° with the horizontal, a force P is applied to the body parallel to the plan
    10·1 answer
  • A bag of groceries is on the back seat of your car as you stop for a stop light. The bag does not slide. Apply your analysis to
    15·1 answer
  • Which of the following would be the magnitude of the vector given a horizontal component of 30 and a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!