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
Free_Kalibri [48]
3 years ago
8

Plz help urgent i will give brainliest

Physics
1 answer:
In-s [12.5K]3 years ago
5 0

Answer:

The answer is D. Balanced forces

Hope it helps.......... pls mark as brainliest

You might be interested in
20 POINTS TRUE OR FALSE:
romanna [79]
False because the first law of motion is the crash I think I’m in middle school
8 0
3 years ago
What is the electric field due to a point charge of 20uC at a distance of 1 meter away from it?
Anettt [7]

The electric field due to a point charge of 20uC at a distance of 1 meter away from it is 180000 \frac{N}{C}.

First, you have to know that the space surrounding a load suffers some kind of disturbance, since a load located in that space will suffer a force. The disturbance that this charge creates around it is called an electric field.

In other words, an electric field exists in a certain region of space if, when introducing a charge called witness charge or test charge, it undergoes the action of an electric force.

The electric field E created by the point charge q at any point P, located at a distance r, is defined as:

E=K\frac{q}{r^{2} }

where K is the constant of Coulomb's law.

In this case, you know:

  • K= 9×10⁹\frac{Nm^{2} }{C^{2} }
  • q= 20 uC=20×10⁻⁶ C
  • r= 1 m

Replacing in the definition of electric field:

E=9x10^{9} \frac{Nm^{2} }{C^{2} }\frac{20x10^{-6} C}{(1 m)^{2} }

Solving:

<u><em>E=180000 </em></u>\frac{N}{C}<u><em /></u>

Finally, the electric field due to a point charge of 20uC at a distance of 1 meter away from it is 180000 \frac{N}{C}.

Learn more:

  • <u>brainly.com/question/1658733?referrer=searchResults</u>
  • <u>brainly.com/question/22042360?referrer=searchResults</u>
  • <u>brainly.com/question/14472528?referrer=searchResults</u>
  • <u>brainly.com/question/15170044?referrer=searchResults</u>
5 0
2 years ago
What mean by expansion effect of heat<br>​
pishuonlain [190]

Answer:

Explanation:

-Cambio de temperatura

Al calentar un cuerpo la temperatura aumenta

Es el efecto más inmediato del calor, el aumento de la temperatura. Al calentar un cuerpo, es habitual, aunque no siempre, que el cuerpo aumente de temperatura. El aumento dependerá de la cantidad de calor que se suministra, del tipo de sustancia y de su cantidad.

-Dilatación

Cuando un objeto se calienta, su volumen aumenta. Este fenómeno se llama dilatación térmica. Por el contrario, cuando un objeto se enfría, su volumen disminuye, debido a la contracción térmica.

Cuando se calienta un cuerpo, además de cambiar de estado o variar su temperatura, también cambia su tamaño, se dilata.

Por ejemplo, los puentes no se construyen de una única pieza, sino que suelen presentar uno o varios cortes longitudinales, las llamadas juntas de dilatación. Si no existieran esas juntas, los cambios de longitud del puente entre el invierno y el verano o entre el día y la noche acabarían por romperlo.

La dilatación de un cuerpo dependerá del aumento de temperatura que experimente, de su tamaño y de la sustancia de que esté hecho. Cuanto más aumente la temperatura más aumentará su tamaño, lo mismo que cuanto mayor sea, mayor se hará.

Todos los cuerpos, ya sean sólidos, líquidos o gaseosos, varían su tamaño cuando intercambian calor con otro cuerpo.

-Cambios de estado:

Si una sustancia modifica el estado de sólido, líquido o gaseoso, se produce un cambio de estado. Un cambio de estado es una modificación en la forma en que se disponen las partículas que constituyen una sustancia.

El estado en que se encuentre un cuerpo depende de la presión a la que está sometido y de su temperatura. Para cambiar su estado se debe modificar alguna de estas variables, o ambas. Al elevar la temperatura de una sustancia sólida, aumenta la agitación de sus partículas.

5 0
3 years ago
Read 2 more answers
a bird is flying due east, it distance from a tall building is given by x(t) = 28m +(12.4m/s)t + (0.045 m/s^3)t^3. what is the i
lana66690 [7]
The instantaneous velocity is how the position is changing with respect to time in a specific point in time, as opposed to the average value given by Delta(x)/Delta(t). It's given by taking a limit of Delta(x)/Delta(t) where t approaches 0, that is, by derivating x(t) in respect to t.

v(t) = x'(t) = (28 + 12.4t + 0.045t^3)' = 12.4 + 0.135t^2

But we want to find the velocity at t = 8s:

v(8) = 12.4 + 0.135*(8)^2 = 21.04m/s
5 0
3 years ago
A bicycle is heading West. It goes 5000m in 500s what's its velocity
dybincka [34]
There are several information's of immense importance already given in the question. Based on the given information's the answer to the question can easily be determined.
Distance covered by the bicycle = 5000 meter
Time taken by the bicycle to reach the distance = 500 second.
Velocity of the bicycle = Distance / Time taken
                                   = 5000/500 meter/second
                                   = 50 meter/second
So the velocity of the bicycle is 50 meter per second. I hope the procedure is clear enough for you to understand. In future you can always use this procedure for solving similar problems.
8 0
3 years ago
Other questions:
  • Considering thermal equilibrium in your answer, explain why some materials feel different temperatures.
    9·1 answer
  • A coil has a resistance of 5Ω and an inductance of 100 mH . At a particular instant in time after a battery is connected across
    5·2 answers
  • A small steel wire of diameter 1.0 mm is connected to an oscillator and is under a tension of 7.5 N. The frequency of the oscill
    6·1 answer
  • A car covers 400 km in an hour towards west .calculate the velocity​
    12·1 answer
  • The gravitational acceleration on the surface of the moon is 1/6 what it is on earth. If a man could jump straight up 0.7 m (abo
    13·1 answer
  • Select the correct answer.
    14·2 answers
  • A 105 kg football player runs at 8.5 m/s and plows into the back of an 85 kg referee running at 3.5 m/s on the field causing the
    12·1 answer
  • Can You Explain?
    12·1 answer
  • the person is not able to see the far lying object clearly. which type of lens will the doctor prescribe him give reason?
    8·1 answer
  • What kind of research in teaching of physical science can be done???​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!