Recent content by megkirch

I just checked my calculation again, I came up with 0.252 also. Thank you!

Homework Statement proton (mass = 1.67x10-27kg) is confined in a one dimensional potential well of infinite height and width of 2.847 x10-14m. Calculate the kinetic energy of the proton in the state with quantum number 1 in MeV Homework Equations KE = ((h^2)*(n^2))/(8*m*L^2) = ans /...

Im sorry, I am not familiar with the i and j notation.

I don't know how to post a diagram on this. I have a right triangle. with bw=3.138 on the y axis, and wg= 4.043 on the x axis, with bg that I am trying to find on the hypotenuse.

Im trying to follow the notes from my professsor that i have for a similar problem. I set up a triangle and got opposite over adjacent that's why i used tan-1. 1.92km/h , after i divided out the width I multiplied .1444 by 60 because its km/hour and got 8.7 km/h. That answer is still wrong. I...

Homework Statement A person in a rowboat crosses a river which flows with 4.043 km/hr. The person rows with maximum velocity of 3.138 km/hr relative to the water (measured while rowing on a still lake) and heads the boat straight across the river - along a line at 90 degrees with respect to...

Homework Statement I want to measure the size of my back yard. I estimate that I can measure the length and width of the yard using a tape measure to an accuracy of 0.05m. I find that the length of the yard is 8.6 m and the width is 7 m. Calculate the perimeter of the yard and its...

my homework is online it said its right. thank you again

thank you so much! i finally got the answer its 4.894

yes the derivative of the equations is. 2.257=0 4.894t=4.894 16.5t^2=33.

sorry, I am completely lost

i have been stuck on this one problem all day, please help.

do i have that equation set up right?

ohh ok thank you! So it would be, x=2.257+V0(4.894)+1/2(16.5)?

2.257 would be the x0, 4.894 would be the t, and 16.5 would go where the t^2 is. I am not sure what to put as the a.