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Fynjy0 [20]
3 years ago
9

Chang sees the following formula on a website about Newton’s second law. a = Sigma F over m.

Physics
2 answers:
Kamila [148]3 years ago
3 0

Answer:A) he needs to find the net force acting on an object in a direction.

Explanation:

aev [14]3 years ago
3 0

Answer:

He needs to find the net force acting on the object in a direction.

Explanation:

The second law of motion gives the relationship between force, acceleration and mass of an object. Its mathematical expression is given  by :

\Sigma F=m\Sigma a

\Sigma a=\dfrac{\Sigma F}{m}        

F represents the net force acting on the object. So, Chang needs needs to find the net force acting on the object in a direction. Hence, the correct option is (a).                  

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Which example best illustrates the transfer of energy between two waves?
Pachacha [2.7K]

Answer:

Vibrations of electric and magnetic fields.

Vibration of air particles

Vibration of the water particles.

Explanation:

We have here two groups of waves. Electromagnetic wave and mechanical waves.

  1. For the first one, electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields.
  2. For the second group, mechanical waves as a sound, for instance, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. Or In water waves, energy is transferred through the vibration of the water particles.

I hope it helps you!

4 0
4 years ago
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how much energy is transferred when 1 gm of boiling water at 100 degree celcius condenses to water at 100 degree celcius?
Mademuasel [1]
The latent heat of vaporization for water is 2257 KJ per Kg . I'm pretty sure that's exactly the same as 2257 joules per gram. So ... When 1 gm of STEAM at 100 C condenses to 1 gm of liquid water at 100 C, it releases 2257 joules of heat energy to its environment.
6 0
4 years ago
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A car is traveling at a speed of 37 m/s.
Vika [28.1K]

1. The speed in kilometers per hour (Km/h) is 133.2 Km/h

2. Yes, the speed is exceeding the 125 Km/h limit

<h3>How to convert 37 m/s to Km/h</h3>

From the question given above, the following data were obtained:

  • Speed (in m/s) = 37 m/s
  • Speed (in Km/h) =?

We can convert 37 m/s to kilometers per hour (Km/h) by doing the following:

1 m/s = 3.6 Km/h

Therefore,

37 m/s = 37 × 3.6

37 m/s = 133.2 Km/h

Thus, 37 m/s is equivalent to 133.2 Km/h

<h3>2. How to determine if the speed is exceeding the limit</h3>
  • Speed of car = 133.2 Km/h
  • Speed limit = 125 Km/h

From the above, we can see that the speed of the car is greater than the speed limit.

Thus, we can conclude that the speed of the car is exceeding the speed limit.

Learn more about conversion:

brainly.com/question/10893215

#SPJ1

3 0
2 years ago
Qual a massa de água a 45 °C que devemos misturar com 200 g de água a 15 °C, para que o sistema entre em equilíbrio térmico a 35
Stells [14]

Responda:

400 g

Explicação:

Dado o seguinte:

Deixe Mass (m1) = m em t1 = 45 ° C

Massa (m2) = 200g em t2 = 15 ° C

Equilíbrio térmico (T) = 35 ° C

Usando a relação:

m1 * C * ΔT = m2 * C * ΔT

Onde m1 e m2 são as massas; C = capacidade de calor específico da água e ΔT é a mudança de temperatura

m1 * ΔT = m2 * ΔT

m * (45 ° C - 35 ° C) = 200 * (35 ° C - 15 ° C)

10 * m = 200 * 20

10 * m = 4000

m = 4000/10

m = 400g

5 0
3 years ago
Most of the mass in an atom is in the nucleus.<br> True<br> False
Zanzabum
There are "Protons" & "Neutrons" in an atom inside the nucleus. They are very massive as compared to "Electrons" (which reside outside the nucleus).So, the sentence is correct.

In short, Your Final answer would be "True"

Hope this helps!
7 0
4 years ago
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