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Fynjy0 [20]
3 years ago
5

If the force acting on a body of mass 4 kg is doubled. by how much will the acceleration change?

Physics
1 answer:
mr Goodwill [35]3 years ago
3 0

Answer:

The acceleration will also double

Explanation:

F = m*a

a = F/m

plugging in sample numbers to prove

a= 100/4   = 25

a = 200/4 = 50

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How long would it take for a rock falling 97.2 m/s to reach the ground from 100 meters
mote1985 [20]

Answer;

velocity(v) = 97.2 m/s ,

distance (S) = 100 m

determine time(t) = ?

  We know that,

               distance (S) = velocity(v) × time(t)

           So,      time (t) = distance ÷ velocity

                                   = 100 ÷ 97.2

                              <em>   t = 1.02 sec.</em>

<em>I hope this will help you.</em>

5 0
4 years ago
What layer of the atmosphere contains all of the weather and thus the most water vapor?
Veronika [31]

The troposphere is the lowermost layer of the Earth's atmosphere. Most of the weather phenomena, systems, convection, turbulence and clouds occur in this layer, although some may extend into the lower portion of the stratosphere.

5 0
4 years ago
Explain the advantage of operating a motor vehicle that is 20% efficient instead of one that is 10% efficient
Jet001 [13]
Save money on fuel and go for longer
5 0
3 years ago
_heat is the amount of heat required to change the temperature of 1 gram of a substance by 1°C, and it is related to the chemica
Sedaia [141]

Answer:

specific heat

Explanation:

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4 0
4 years ago
Read 2 more answers
A voltmeter with resistance rv is connected across the terminals of a battery of emf e and internal resistance r. Find the poten
Agata [3.3K]

Answer:

V = I(R+r)

Explanation:

According to ohms law, the current (I) passing through a metallic conductor at constant temperature is directly proportional to the potential difference (V) across its end.

Mathematically, V= IR where V is the potential difference

I is the current

R is resistance

Given emf (E) = IRt... (1)

where E is the emf

Rt is the total equivalent resistance

The external resistance Rv is connected in series with the internal resistance 'r' to give total equivalent resistance Rt = (R+r)

Substituting in equation 1

E = I(R+r)

The equivalent potential difference V = I(R+r)

6 0
3 years ago
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