Wednesday
June 19, 2013

Posts by Sar


Total # Posts: 34

physics
two masses are in the ratio 1:2 are thrown vertically up with the same speed . what is the effect on time by the mass?

math:solving for an exponent.
Bob, thank you. I thought I was going insane there for a minute. I guess the professor made a mistake. We are all human (but it drives me crazy when I'm trying to study haha)

math:solving for an exponent.
No. The math he did was handwritten. I guess he must have made a mistake because this is driving me nuts. Everything listed in my post is CORRECTLY copied from the piece of paper I got it on.

math:solving for an exponent.
I can't get the right answer, where am I going wrong? 7.0x10^9= (6.7x10^9)(2.72^r*3) 1.04 = 2.72^r*3 When I solve for this, I get ln (1.40) = 0.03922 then 0.03922 / 3 = 0.0130 So my r equals 0.0130 BUT the teacher says the answer is 0.05 = r *3 0.02 = r What did I do wrong...

history
The causes of Sand Creek massacre were rooted in the decades-long conflict for control of the Great Plains of eastern Colorado. The Fort Laramie Treaty of 1851 guaranteed ownership of the area north of the Arkansas River to the Nebraska border to the Cheyenne and Arapahoe. By ...

Physics: Angular Width. Why is my answer wrong?
Well, that was a step my teacher did so I just followed it. However, .00082 degrees is not the correct answer either (or the variant of 8.2e-4). So I am just totally lost on this one. :/

Physics: Angular Width. Why is my answer wrong?
A beam of yellow laser light (590 nm) passes through a circular aperture of diameter 5.0 mm. What is the angular width of the central diffraction maximum formed on a screen? I can't seem to get this answer right. I don't think I am finding the first part of the problem...

Physics: Angular Width. Why is my answer wrong?
I have also tried using the positive of the angular width. But that is wrong, too. I used the same equation as i did above but with the 1.22

Physics: Angular Width. Why is my answer wrong?
I just tried the problem with 1.22 and i got -1.21 as my final angular width. However, this is also incorrect. any ideas where I am going wrong?

Physics: Angular Width. Why is my answer wrong?
A beam of yellow laser light (590 nm) passes through a circular aperture of diameter 5.0 mm. What is the angular width of the central diffraction maximum formed on a screen? I can't seem to get this answer right. I don't think I am finding the first part of the problem...

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