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1. ### Physics question about rotational motion. Solid ball rolling down incline. Final Velocity?

v = { [2*9.81*10*sin 42o]/[1 + 2/5] }1/2 = 9.6837 m/s Angular velocity, w = v/r = 9.6837 / 0.3 the final angular velocity of the ball when it reaches the bottom of the incline, w = 32.28 rad/s

2 Answers · Science & Mathematics · 26/03/2020

2. ### Maximum value of rms current?

...) = 1/(6.28*√17.5*10^-6*21.1*10^-3 = 262 Hz  Imax = V/R = 224/10.5 = 21.3 A

1 Answers · Science & Mathematics · 24/03/2020

3. ### Ordinary differential equation..?

... quantitative terms, the roots of the ODE are r = (-c ± √(c² - 4mk)) / 2m r = (-100kg/s ± √6403kg²/s²) / 20kg...

2 Answers · Science & Mathematics · 22/03/2020

4. ### how do i do dis?

...moment of inertia about the central axis is I = ½MR² where R is the disk radius For string tension T, the torque about...

2 Answers · Science & Mathematics · 20/03/2020

5. ### Physics help pls?

... the underlying principles.  P = v^2 / R and resistances in series add. Thereafter it is just ...

1 Answers · Science & Mathematics · 22/03/2020

6. ### Application of derivative: a SPHERICAL balloon filled w gas has a leak that cause gas to escape at rate of 1.5m^3/min.?

.../min dr/dt = -1.5/4πr² ds/dt = ds/dr * dr/dt = -8πr * 1.5/4πr² = -3/r m²/s -3/4 = -0.75m²/min  -0....

1 Answers · Science & Mathematics · 15/03/2020

7. ### In a series RL circuit like the figure, ε0 = 32 V , R = 3.2 Ω , and L = 3.0 H?

Use the equation... i = -Vo/R*ln(1 - iR/Vo) i = 7.1, Vo = 32, R = 3.2, L = 3, t = ? now transpose equation to make t the subject... plug in the values & t = 1.16 secs

1 Answers · Science & Mathematics · 14/03/2020

8. ### The current in a series RL circuit increases to 23 percent of its final value in 4.0 μs?

...where If is the final value. (1-e^-Rt/L) = 0.23 when [1-e^-R(4e-6/1.6e-3)] = 0.23 Rt/L = R*4e-6/1.6e-3 = R/400...

1 Answers · Science & Mathematics · 12/03/2020

9. ### You connect a battery, resistor, and capacitor as in (Figure 1), where E = 51.0 V, C = 5.00 μF, and R= 110 Ω. The switch S is closed at t= 0?

T = R*C = 5.0 *110 =  0.55 msec  8/51 = 1-e^-k 43/51 = e^-k k = -ln 43/51 = 0.1706 = t/T t = T*0.1706 = 94 μ sec

1 Answers · Science & Mathematics · 10/03/2020

10. ### Need help ASAP physics question?

Energy E = R*I^2*t = 1.5*3^2*3.5 = 47.25 joule = 11.3 cal

3 Answers · Science & Mathematics · 03/03/2020