Answer:
80Ω
Explanation:
Resistance in a series circuit (when one resistor is after another in the same line) is calculated with the following equation
Total resistance = R1 + R2 + R3...Rn
Substitute in your values and solve for total resistance
Total resistance = 60 + 20 = 80Ω
Answer:
![r=\frac {mv}{qb}](https://tex.z-dn.net/?f=r%3D%5Cfrac%20%7Bmv%7D%7Bqb%7D)
Explanation:
In this case, since the charged particle moves in circular motion, the centripetal force is equivalent to the magnetic force.
![\frac {mv^{2}}{r}=qvb\\\frac {mv}{r}=qb\\r=\frac {mv}{qb}](https://tex.z-dn.net/?f=%5Cfrac%20%7Bmv%5E%7B2%7D%7D%7Br%7D%3Dqvb%5C%5C%5Cfrac%20%7Bmv%7D%7Br%7D%3Dqb%5C%5Cr%3D%5Cfrac%20%7Bmv%7D%7Bqb%7D)
Answer:
hi what is your question?? say in English please
Answer:
The work done on the athlete is approximately 2.09 J
Explanation:
From the definition of the work done by a variable force:
![\displaystyle{\int_{x_i}^{x_j}F(x)dx}](https://tex.z-dn.net/?f=%5Cdisplaystyle%7B%5Cint_%7Bx_i%7D%5E%7Bx_j%7DF%28x%29dx%7D)
and substituting with the function of our problem:
![\displaystyle{\int_{0}^{0.19}(140x-190x^2)dx\approx2.09\mathrm{J}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%7B%5Cint_%7B0%7D%5E%7B0.19%7D%28140x-190x%5E2%29dx%5Capprox2.09%5Cmathrm%7BJ%7D%7D)