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
VikaD [51]
3 years ago
14

What is the change in internal energy if 60 J of heat is released from a system and 30 J of work is done on the system? Use U =

Q - W.
\
Physics
1 answer:
k0ka [10]3 years ago
8 0

The change in internal energy of the system is +30 J

Explanation:

We can solve this problem by using the first law of thermodynamics, which states that the change in internal energy of a system is given by the equation:

\Delta U = Q -W

where

\Delta U is the change in internal energy

Q is the heat absorbed by the system (positive if it is absorbed, negative if it is released)

W is the work done by the system (positive if it is done by the system, negative if it is done by the surroundings on the system)

Therefore, in this problem, we have

Q=-60 J (heat released by the system)

W=-30 J (work done on the system)

Therefore, the change in internal energy is

\Delta U = -60 - (-30) = +30 J

Learn more about thermodynamics:

brainly.com/question/4759369

brainly.com/question/3063912

brainly.com/question/3564634

#LearnwithBrainly

You might be interested in
Write two examples of machine which changes the direction of force​
Ostrovityanka [42]

Answer:

Washign machine and swingset

Explanation:

4 0
3 years ago
Determine the mass the mass in Kilograms of a Object that has a weight of
34kurt
1. 20mn that’s the answer
6 0
2 years ago
Read 2 more answers
What happens when a person’s immune system is very weak?
Alexeev081 [22]
The correct answer is C) becuse without certain medicine they will dieeeee
6 0
3 years ago
(a) when rebuilding her car's engine, a physics major must exert 300 n of force to insert a dry steel piston into a steel cylind
Vilka [71]
There are some missing data in the text of the problem. I've found them online:
a) coefficient of friction dry steel piston - steel cilinder: 0.3
b) coefficient of friction with oil in between the surfaces: 0.03

Solution:
a) The force F applied by the person (300 N) must be at least equal to the frictional force, given by:
F_f = \mu N
where \mu is the coefficient of friction, while N is the normal force. So we have:
F=\mu N
since we know that F=300 N and \mu=0.3, we can find N, the magnitude of the normal force:
N= \frac{F}{\mu}= \frac{300 N}{0.3}=1000 N

b) The problem is identical to that of the first part; however, this time the coefficienct of friction is \mu=0.03 due to the presence of the oil. Therefore, we have:
N= \frac{F}{\mu}= \frac{300 N}{0.03}=10000 N
8 0
3 years ago
This is my question. I need the answer stat.
Kipish [7]

Answer:

Explanatioyour answers look right, but if there has , has to be another answer its a , but your answers are right

5 0
2 years ago
Read 2 more answers
Other questions:
  • A car drives on a highway with speed of 68mi/h. what is this speed in km/h?
    5·1 answer
  • What has to happen for a force to do work on an object?
    11·1 answer
  • The risk of earthquakes is high along the Pacific coast of the United States because a. There have been no earthquakes there lat
    6·1 answer
  • How does a nuclear power plant produce energy
    13·1 answer
  • Pts<br> You walk 10 meters east, then 5 meters north. What is your displacement?
    7·1 answer
  • A uniform electric field exists in the region between two oppositely charged plane-parallel plates. An electron is released from
    7·1 answer
  • Invasive species are _______ species that have a ______ impact on a given ecosystem.
    15·2 answers
  • What is Ethyl butyrate used for
    7·1 answer
  • The moon Umbriel orbits Uranus (mass = 8.68 x 10^25 kg) at a distance of 2.66 x 10^8 m. What is Umbriel's orbital period (in hou
    7·1 answer
  • A chief finds a glittering stone which he shows to the family. The family assures him that the stone is pure gold but necono's.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!