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1. ### As you drive down the road at 18 m/s , you press on the gas pedal and speed up with a uniform acceleration of 1.22 m/s2 for 0.70 s .?

angular speed ω = V/r = 18/(1/3) = 54 rad/sec angular acceleration α = at/r = 1.22/(1/3) = 3.66 rad/sec^2 angle Θ = ω*t+ α/2*t^2 = 54*0.7+1.83*0.7^2 = 38.70 radians ... rounded up to 39

1 Answers · Science & Mathematics · 17/10/2019

2. ### In the figure, the total resistance is 12.4 kΩ , and the battery's emf is 29.2 V . If the time constant is measured to be 25.2 μs .?

timeconstant Ƭ = 25.2 μs = R*C C = Ƭ/R = 25.2*10^-6/(12.4*10^3) = 2.032*10^-9...

2 Answers · Science & Mathematics · 13/03/2019

3. ### A grinding wheel is a uniform cylinder with a radius of 7.90 cm and a mass of 0.680 kg. Calculate its moment of inertia about its center.?

moment od inertia J = m/2*r^2 = 0.34*7.9^2/10^4 = 0.00212 kg*m^2 angular acceleration α1 = 2PI/60*n/t1...

1 Answers · Science & Mathematics · 23/11/2019

4. ### The figure(Figure 1) is a cross section of two infinite lines of charge that extend out of the page. The linear charge densities are ±λ.?

... an infinite line of charge having density λ, the field E = λ / 2π*R*ε₀ where R is the distance from the center of the line of charge...

1 Answers · Science & Mathematics · 06/03/2019

5. ### Calculate the Magnitude and Direction of the NET Electric Field?

...due to a point charge (Q) at a point at a distance (r) is given by: E = kQ / r²... {purple}. magnitude from Pythagoras R = 5.03 ×10^5 V/m direction = arctan (2.25/4.5) = 26...

1 Answers · Science & Mathematics · 05/09/2019

6. ### Physics 2 question?

The electric potential Vₑ from a charge Q at a distance r is given by Vₑ = kQ/r, where k is the ...

2 Answers · Science & Mathematics · 07/02/2020

7. ### physics question: voltage of thin disk?

...correctly, but the long way. Each element of charge is the same distance (r =√(R² + d²) from P. And potential is a scalar...

1 Answers · Science & Mathematics · 23/02/2019

8. ### To the poles of the cell with an electromotive force ℰ = 9 V...?

...assumption... we have a series parallel circuit, with Ri in series with one or two R's in parallel. with one R, Rt = Ri + R = 9/0.2 = 45...

3 Answers · Science & Mathematics · 06/05/2019

9. ### The figure shows a cylindrical metal shell that is coaxial with a thin wire. Both are very long, and the shell has inner radius ri and?

...since that's the enclosed charge (per unit length, for a cylinder of radius r_i) Q2) λ = 0 (See citation, esp. pg 5. Upshot: field ...

1 Answers · Science & Mathematics · 12/09/2019

10. ### physics question! thank you?

The road must apply an acceleration v^2 / R to keep the car in the circle. The gravitational acceleration creates a...

1 Answers · Science & Mathematics · 25/02/2019