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1. ### If I fall from atop the Empire State Building how long will it take for me to hit the ground and at what speed

...air resistance a=9.8 m/s^2 v=at v=9.8t d=4.9t^2 380=4.9t^2 t=8.8 s v=86.3 m/s That's above terminal velocity so in reality it would take longer because you would travel slower Using 55 m/s as terminal velocity the answer...

6 Answers · Science & Mathematics · 05/12/2007

2. ### Estimate (a) How long it took King Kong to fall straight down from the top of the Empire State Building.....?

h = 1/2*g*t^2 v = g*t solve for t: t = sqrt(2*h/g) Thus: v = sqrt(2*g*h) h:=380 m; g:=9.8 m/s^2; Results: t = 77.55 seconds v = 82.825 m/s

2 Answers · Science & Mathematics · 24/05/2011

3. ### Calculate how long it took King Kong to fall straight down from the top of the Empire state building?

d = 1/2 * a * t^2 360 = 1/2 * 9.8 * t^2 Solve for t, Then v = a*t, where a = 9.8 m/sec^2 and use the "t" you just found.

2 Answers · Science & Mathematics · 29/09/2010

4. ### Estimate how long it took King Kong to fall straight down from the top of the Empire State Building (380m high

Assuming no air resistance s = u t + g t²/2 s = 380m u = 0 m/s g = 10 m/s² t = √(2 s/g) = 8.72 secs v² = u² + 2 g s u = 0 m/s g = 10 m/s² s = 380 v = 87.2 m/s

9 Answers · Science & Mathematics · 18/02/2008

5. ### Estimate how long it took King Kong to fall straight down from the top of the Empire State Building (380m high?

Assuming no air resistance s = u t g t²/2 s = 380m u = 0 m/s g = 10 m/s² t = √(2 s/g) = 8.72 secs v² = u² 2 g s u = 0 m/s g = 10 m/s² s = 380 v = 87.2 m/s

1 Answers · Science & Mathematics · 18/01/2017

6. ### The electric field inside a 50 cm-long copper wire is 1.4×10^−2 V/m?

...can't cancel it. But in that case, the field you state wouldn't remain at that value for even a nanosecond. And...strength over that distance would result in a potential difference of ∆V = L*E = .5 m * 1.4*10^-2 V/m = 7*10...

2 Answers · Science & Mathematics · 15/02/2011

... means that all of the current (in the steady state) will be flowing through R and R2. ... in R = Current in R2 = (9.4 V) / (11.0 k + 16.0 k) = 0.348 A

2 Answers · Science & Mathematics · 24/02/2007

8. ### How do I find the final charge on a capacitor a long time after the switch is closed?

A long time after the switch is closed...simple voltage divider, because all of the steady state current flows through R2...: Vout = R2*V/(R1 + R2) R3 doesn...

1 Answers · Science & Mathematics · 14/02/2011

9. ### The label on a 12.0-V truck battery states that it is rated at 182.0 A·h (ampere-hours).?

For an ideal battery, that is, one from which we can extract all its energy: (a) One coulomb is the same as one ampere-second, so if the battery's capacity is 182.0 ampere-hours we multiply that by 3600, the number of seconds in an hour...

1 Answers · Science & Mathematics · 02/10/2010

10. ### help with inductance physics question?

ε = 24.0 V, R1 = 5.00 kΩ, ... been closed for a long time and steady state conditions have been...the switch is opened, how long does it take for the current in...

1 Answers · Science & Mathematics · 30/05/2016