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ss7ja [257]
3 years ago
5

How can scientists know for sure that the cell theory is true ? What evidence do we have to prove it

Physics
1 answer:
Nikolay [14]3 years ago
3 0
The basic unit of life, it can be seen wit microscopes
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according to newton's second law of motion of the net force acting on the object increases while the mass of the object remains
Licemer1 [7]

Answer:

The Acceleration will increase

Explanation:

Newton's Second Law of motion: It states that the rate of change of momentum is directly proportional to the applied force and takes places along the direction of the force.

It can be expressed mathematically as,

F ∝ m(v-u)/t

Where (v-u)/t = a

F  = kma.

F = force, m = mass of the body, a = acceleration, k = constant of proportionality which tend to unity for a unit force, a unit mass, and a unit acceleration.

Therefore,

F = ma.

From the equation above,

If the net force acting on a body increase, while the mass of the body remains constant, the acceleration will also increase.

4 0
3 years ago
Can u find the . in this?
nikklg [1K]

Answer:

Yeah it's right there from the one next to the exclamation point

4 0
3 years ago
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When the temperature of the air is 50°C, the velocity of a sound wave traveling through the air is approximately?
noname [10]

The answer is:

C. 361 m/s

The explanation:

To calculate  the speed of sound at a given temperature (50°C) we are going to use this formula:

v = 331 + 0.6T

when V is the velocity

and T is the temperature = 50°C

by substitution:

v = 331 + 0.6(50)

v = 361 m/s

So, The correct answer is C.

because of the variation of the motion of the molecules of air with change of temperature so, the velocity (V) of the  sound in the air is change with temperature.

5 0
3 years ago
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An open system starts with 52 J of mechanical energy. The energy changes
Vikki [24]

Answer:

47 J

hope it helps u

thanks for easy ask

3 0
2 years ago
How many layers does the world have?
Lemur [1.5K]
The world has a total of 7 layers
6 0
3 years ago
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