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
barxatty [35]
3 years ago
13

What is the change in internal energy if 60 J of heat are added to a system

Physics
1 answer:
tester [92]3 years ago
4 0

Answer:

20 J

Explanation:

ΔU = Q − W

ΔU = 60 J − 40 J

ΔU = 20 J

You might be interested in
You pull two blocks connected by a lightweight string across a horizontal table. Block 1 has a mass of 1.00 kg, and block 2 has
coldgirl [10]
Use google
-Just sayi’n don’t get mad
7 0
3 years ago
A 52 N sled is pulled across a cement sidewalk at constant speed. A horizontal force of 36 N is exerted. What is the coefficient
Andre45 [30]

Answer:

μ = 0.692

Explanation:

In order to solve this problem, we must make a free body diagram and include the respective forces acting on the body. Similarly, deduce the respective equations according to the conditions of the problem and the directions of the forces.

Attached is an image with the respective forces:

A summation of forces on the Y-axis is performed equal to zero, in order to determine the normal force N. this summation is equal to zero since there is no movement on the Y-axis.

Since the body moves at a constant speed, there is no acceleration so the sum of forces on the X-axis must be equal to zero.

The frictional force is defined as the product of the coefficient of friction by the normal force. In this way, we can calculate the coefficient of friction.

The process of solving this problem can be seen in the attached image.

5 0
3 years ago
What selective pressures favored an increase in brain size in hominid primates?
Viktor [21]
The colossal brains of people are to a great extent because of one segment the cerebral cortex. The cerebral cortex is the focal point of dialect, rationale, critical thinking, and data preparing. A high bent in these territories would be exceptionally favorable to primitive seekers.
4 0
3 years ago
Read 2 more answers
An advantage of light microscopes compared to electron microscopes is that light microscopes _____.
ivolga24 [154]
<span>C is the correct answer. Electron microscopes require a vacuum to work, so living cells cannot be seen because they cannot respire. Light microscopes use a ray of visible light instead of a beam of electrons to magnify something so it can be seen by the naked eye. There are two different types of electron microscope: transmission (TEM) and scanning (SEM).</span>
5 0
3 years ago
Read 2 more answers
If a man travels from 0m to 5m then back to -3m, all in four seconds, what is the mans displacement?
yawa3891 [41]

Answer:

-3 m

Explanation:

Displacement is the final position minus the initial position.

Δx = x − x₀

Δx = -3 m − 0 m

Δx = -3 m

7 0
3 years ago
Other questions:
  • Which nucleus completes the following equation?
    5·2 answers
  • If a 5 Kg ball is attached to the end of a string, and it has a velocity of 10 m/s, what is the centripetal acceleration if the
    7·1 answer
  • What is the hardy-weinberg principle?
    12·1 answer
  • Which one of the following accurately describes the force of gravity?
    12·1 answer
  • A ball rolls down a hill and hits a box. The momentum of the ball decreases. Which happens to the momentum? Select one of the op
    5·1 answer
  • Elements in which family are most likely to have properties associated with
    15·1 answer
  • Plate] term 3 quiz 1 physics grade 9
    8·1 answer
  • How would mass determine if an egg will crack or not and why?
    9·1 answer
  • How do scientists classify species?
    10·2 answers
  • What is also known as watered carbons
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!