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saul85 [17]
3 years ago
14

State and prove Newton's second law of motion ​

Physics
1 answer:
LiRa [457]3 years ago
5 0

Answer:

HOPE IT HELP YOU A LOT :)

I prove it also .

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Which variable is represented by the following symbol? ∑F
mario62 [17]

Answer:

d.Net force

Explanation:

The net force is the force which is the sum of all the forces acting on an object simultaneously.

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3 years ago
Talking to adults can be intimidating and uncomfortable if you do not yet feel like one. However, learning how to effectivelycom
Korvikt [17]

Answer: i didnt look at your question its to long

Explanation:

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4 years ago
Frank and Lisa are analyzing the chart, which shows the speed at which light travels through different media. Frank says that li
Lelechka [254]
The correct answer is
c) Neither person is correct because light does not change frequency when it travels through different media

In fact, light changes both wavelength and speed when it travels through different media, but the frequency remains the same.
4 0
3 years ago
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a train travels 81 kilometers in 2 hours and then 88 kilometers in 2 hours what is its average speed​
Blababa [14]

Average speed = total distance / total time

= (81 + 88) / (2 + 2)

= 169/4

= 42.25 kilometers/hour

Let me know if you have any questions.

4 0
3 years ago
Aluminum wire 1.00 mm in radius is to be used to construct a solenoid 15.0 mm in radius so that the magnitude of the magnetic fi
Leto [7]

To solve this problem we will proceed to use the equations given for the calculation of the resistance, in order to find the radius of the cable. Once the length is found we can find the number of turns of the solenoid and finally the net length of it

The resistance of the wire is

R= \frac{\rho L}{A}

\rho= Resistivity

L = Length

A = Cross-sectional Area

That can be also expressed as,

R = \frac{\rho L}{\pi r^2}

Rearranging the equation for the length of the wire we have

L= \frac{R\pi r^2}{\rho}

L= \frac{3\Omega \pi(1*10^{-3})}{2.655*10^{-8}\Omega \cdot m}

L = 354.8m

The number of turns of the solenoid is

N = \frac{L}{2\pi r} \rightarrow Denominator is equal to the circumference of the loop

N = \frac{354.8}{2\pi(15*10^{-3})}

N = 3766

Finally the Length of he solenoid is

l = N (\phi)

Where \phi is the diameter of wire

l = N (2r)

l = (3766)(2*(1*10^{-3}))

l = 7.532m

Therefore the length of the solenoid is 7.532m

7 0
4 years ago
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