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
Katena32 [7]
3 years ago
13

Which physical law underlies the first law of thermodynamics?

Physics
1 answer:
LenaWriter [7]3 years ago
8 0

Answer:

Conservation of energy

Explanation:

The first law of thermodynamics is given by :

Q=\Delta U+W

Here,

Q is amount of heat added to the system

\Delta U is change in internal energy

W is amount of work done by the system

It is clear that the energy can be neither created nor destroyed, it remains conserved. Hence, first law of thermodynamics shows that conservation of energy.      

You might be interested in
What is a Cell?<br><br> Don't look it up PLEASE... I WILL GIVE BRAINLIEST
Travka [436]

Explanation:

Cell is a structural and fundamental unit mass of the body

6 0
2 years ago
Why do we use atomic models?
vlabodo [156]
Models help us to understand systems and their properties
3 0
1 year ago
What is the monthly cost of using a 750 W refrigerator that runs for 8 hours every day, if the cost per kWh is $0.23?
disa [49]

Answer:

Assuming there are 28 days in each month,

750W = 0.75kW

Cost of electric bill = 0.75 × 8 × 28 × $0.23

                               = $38.64

8 0
2 years ago
Consider three scenarios in which a particular box moves downward under the pull of gravity :
luda_lava [24]

Answer:

1. True  WA > WB > WC

Explanation:

In this exercise they give work for several different configurations and ask that we show the relationship between them, the best way to do this is to calculate each work separately.

A) Work is the product of force by distance and the cosine of the angle between them

    WA = W h cos 0

   WA = mg h

B) On a ramp without rubbing

     Sin30 = h / L

     L = h / sin 30

     WB = F d cos θ  

     WB = F L cos 30

     WB = mf (h / sin30) cos 30

     WB = mg h ctan 30

C) Ramp with rubbing

    W sin 30 - fr = ma

   N- Wcos30 = 0

   W sin 30 - μ W cos 30 = ma

    F = W (sin30 - μ cos30)

   WC = mg (sin30 - μ cos30) h / sin30

   Wc = mg (1 - μ ctan30) h

When we review the affirmation it is the work where there is rubbing is the smallest and the work where it comes in free fall at the maximum

Let's review the claims

1. True The work of gravity is the greatest and the work where there is friction is the least

2 False. The job where there is friction is the least

3 False work with rubbing is the least

4 False work with rubbing is the least

5 0
3 years ago
Which of the below is an example of mimicry that enables prey species avoid predation?
Marta_Voda [28]

b..a harmless organism imitating the look of a harmful organism

Explanation:

A harmless organism imitating the look of a harmful organism is one example of mimicry that enables prey species avoid predation.

Prey are smaller and less harmful organisms often hunted by larger organisms usually carnivores.

Mimicry is a form of evolutionary adaptation process in which two organisms of the same specie or different species tends to look alike.

It is a subtle defense mechanism developed by organism over an extended period of time.

learn more:

Adaptation brainly.com/question/11105547

#learnwithBrainly

6 0
3 years ago
Other questions:
  • Hello plz help meeeee plz I need helppp if u know it plz help
    9·1 answer
  • Where is the most energy transferred in a food web
    9·1 answer
  • In __________ waves, the motion of the particles in a medium is across the direction of the wave (perpendicular).
    9·1 answer
  • Find V <br><br><br> V=25m. <br> _____=??<br> 3.5s.
    11·1 answer
  • U-235 releases an average of 2.5 neutrons per fission, while Pu-239 releases an average of 2.7 neutrons per fission. Which of th
    12·1 answer
  • Your family is moving to a new home. While lifting a box 1.5 m straight up to put it on a truck, you exert an upward force of 20
    9·2 answers
  • You are riding a bicycle home from school. You average 5 meters per second and you are headed south.
    15·1 answer
  • An effective early childhood curriculum can be​
    13·1 answer
  • Describe your experience with the largest earthquake you have left
    11·1 answer
  • A 72.0-kg skydiver is falling at a terminal velocity of 79.0 m/s. Which equation should be used to calculate the diver’s kinetic
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!