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Brums [2.3K]
3 years ago
15

Which of the following describes the work done by a heat engine?

Physics
1 answer:
SVEN [57.7K]3 years ago
6 0

Answer: A.

Explanation:

Máquina térmica tem como função, manter a temperatura de um dado fluído, então, a quantidade de calor desse mesmo fluído ao entrar na máquina, será igual á quantidade de calor desse fluido saindo.

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What is his angular displacement during a 1.0 s time interval?
Leviafan [203]

Answer:

The angular velocity is: (2π radians) ⁄ (4.3 sec) = 1.461 rad/sec

The angular displacement is: (1.461 rad/sec)(1 sec) = 1.461 radians

Explanation:

8 0
2 years ago
Define Newton's law of motion​
storchak [24]

By definition, Newton's First Law, also called the Law of inertia, indicates that "Every body perseveres in its state of rest or of uniform rectilinear motion unless it is forced to change its state by forces impressed on it."

This means that for a body to come out of its state of rest or of uniform rectilinear motion, it is necessary for a force to act on it.

<h3>Definition of inertia</h3>

So, in other words, all bodies are opposed to changing their state of rest or motion and this opposition is called inertia.

<h3>Body in equilibrium</h3>

In this way, a body is in equilibrium when the resultant of the forces acting on it is zero. That is, it is not possible for a body to change its initial state (be it rest or motion) unless one or more forces intervene.

Learn more about Newton's Laws:

<u>brainly.com/question/13230056?referrer=searchResults</u>

4 0
2 years ago
Read 2 more answers
If the moon is directly over the beanstalk, how many days after the beanstalk was planted would the beanstalk reach the moon? (T
olchik [2.2K]

Answer:

28.23 days

Explanation:

Length of magic beanstalk=4 feet

Height increasing exponentially and double each day.

We have  formula

y=a(b)^t

Where t=Time (in day)

We have a=4

When t=1 then y=8

8=4b^1

b=\frac{8}{4}=2

b=2

Distance between moon and earth=y=238,900 miles=238900\times 5280 feet

Substitute the values

238900\times 5280=4(2)^t

\frac{238900\times 5280}{4}=2^t

315348000=2^t

ln(315348000)=tln 2

t=\frac{ln315348000}{ln 2}

t=28.23 days

3 0
3 years ago
An object accelerates 12.0 m/s² when a force of 6.0 newtons is applied to it.
Nimfa-mama [501]

Answer:

<h2>0.5 kg</h2>

Explanation:

The mass of the object can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{6}{12}  =  \frac{1}{2}  \\

We have the final answer as

<h3>0.5 kg</h3>

Hope this helps you

7 0
2 years ago
Read 2 more answers
A 3000 kg truck travelling at 50km/hr strikes a stationary 1000 kg car, locking the two vehicles
Papessa [141]

Answer:

50 x 3000 = 150000/4000 = 37.5

37.5 I think.

Explanation:

Hope this helps!

6 0
2 years ago
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