Answer: I believe it’s .25 m/s
Explanation: the speed is measured distance/ time. Which is .5 meters/ 2 seconds =0.25
I think the answer is digestive system
Hope this helps... mark as Brainliest plz
So the problem ask to calculate the magnitude of the average force applied to the ball if its mass is 0.2kg changes its velocity from 20m/s to 12m/s and the time contact with the ball with the wall is 60 ms. In my calculation the best answer would be 107N.
Answer:
4.43 kW
Explanation:
Since Intensity I = P/A = E²/2cμ₀ where P = Power, A = Area = 4πr² where r = distance from source = 61 m and E = electric field amplitude = 8.45 V/m.
P = E²A/2cμ₀ = E²4πr²/2cμ₀ = 2πE²r²/cμ₀
= 2π(8.45 V/m)²(61 m)²/3 × 10⁸ m/s × 4π × 10⁻⁷ Tm/A
= 4428.1 W
= 4.4281 kW ≅ 4.43 kW
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

= Resistivity
L = Length
A = Cross-sectional Area
That can be also expressed as,

Rearranging the equation for the length of the wire we have



The number of turns of the solenoid is
Denominator is equal to the circumference of the loop


Finally the Length of he solenoid is

Where \phi is the diameter of wire



Therefore the length of the solenoid is 7.532m