# Yahoo Web Search

1. ### Electrons accelerated by a potential difference of 13.02 V pass through a gas of hydrogen atoms at room temper?

... through a potential difference of 13.02 V , its kinetic energy is 13.02eV. ... = -13.6/1² = -13.6eV (ground state ) We need to find the highest energy level to...

3 Answers · Science & Mathematics · 22/03/2013

2. ### Repost: How long before the drat touches the ground?

73 = v cos30º t 0 = 45 + v sin30º t - (1/2) g t² ==> 0 = 45 + 73 ... before jumping and it is plausible that this state depends on their weight. In that case we need...

2 Answers · Science & Mathematics · 19/03/2009

3. ### QUANTUM PHYSICS QUESTION (Best answer gets many points)?

...u-hat) u-hat + (A ▪ v -hat) v -hat. This is what the equation...gt; . This tells you how long | ψ > is along | φi >. ...change basis, you need to project your state vector onto the basis to see how long it...

1 Answers · Science & Mathematics · 31/10/2016

4. ### Physics: Does anyone have an idea how long a juggling cube takes to be released.?

...hand: Equation: V² = u² + 2*a*s V = final velocity = 0m/s u = initial velocity - what we want a...9.81)*0.3 u² = 5.886 u = 2.43m/s You state that the hand moves 6cm in increasing the velocity...

2 Answers · Science & Mathematics · 14/01/2014

5. ### Potential and Kinetic Energy?

For the first question: Energy is energy. Energy is conserved in a closed system. That should explain enough right there. =-) For the second question: What's work measured in and what's the unit...

3 Answers · Science & Mathematics · 20/05/2011

6. ### PHYSICS QUESTION: A person on an apartment balcony holds a ball over the balcony and throws it directly upward?

...up. 1) how high does ball go above balcony: V / A = T, V /2 x T = distance (up) 2) how long to hit the ground: D = balcony + up, use: Down =AT^2/2...

1 Answers · Science & Mathematics · 25/02/2013

7. ### How do you find the spring constant of a bungee cord without using a mass?

... proved by some random person hundreds of years ago which states v = sqrt(T/D). v = speed of a wave in a stretched string T...

1 Answers · Science & Mathematics · 18/06/2010

8. ### Physics circular motion problem, totally stumped.?

You forgot to state that it accelerated UNIFORMLY... the rotational speed at 1.25s will be v = at = 0.500m/s. Then its...125) = 72.25... degrees. Live long and prosper.

1 Answers · Science & Mathematics · 22/07/2007

9. ### Help With PHYSICS Please!!!!!!!! NEED HELP FAST!!?

...question please? i would be oh so grateful (only if ur capable of course!) 1) use formula v =d/t velocity is 45 km/h which is equal to d, which is 10 km...

2 Answers · Science & Mathematics · 24/02/2009

10. ### Physics Kinematics Questions help?

...can do the rest you just have to use the three equations of uniform acceleration : v = u+at v ^2 = u^2 + 2as s = ut + 1/2*a*t^2

1 Answers · Science & Mathematics · 01/03/2016