Recent content by psruler

The answer i got is: 4.4 x 10^-8N. Can you verify if that's right? Here are the steps I did to calculate that: F12 = k(q1)(q2)/r^2 = [(8.99 x 10^9)(1.0 x 10^-9)(-40 x 10^-9)]/(3.0)^2 F12x = F12cos56 = (4.0 x 10^-8)(0.56) = 2.2 x 10^-8 F12y = F12sin56 = (4.0 x 10^-8)(0.83) = 3.3x 10^-8...

Hi, Can anybody help me get started on this problem? Point P2 is located 3.0 m away from each -Q (-Q = -40 nC) , forming an equilateral triangle with them. Determine the net force (magnitude and direction) that would act on a small charge of +1.0 nC placed at P2. Any hints? Thanks!

Sorry for asking too many questions, so the answer to part 'a' is 6.55 x 10^-7?

Oh, so I have to multiply it by 2? 1.6x10-19 x 2? and the answer is for q1 and q2?

So is the answer to question a, 3.28 x 10^-7?

What do I do with the 2 neutrons? I know Q1 = Q2 = -1.6 x 10 ^-19 C. So it will look like this: F = ((8.988 x 10^9)(1.6 x 10^-19)^2)/2.65 x 10^-11m Is the answer for the above equation solve question 'a'?

Can someone help me with this problem: Consider a simplified model of the singly-ionized helium atom, He+: 2 protons plus 2 neutrons in the nucleus, "orbited" by one electron at a constant distance of 2.65 x 10^-11m. a. What is the magnitude of the attractive electrostatic force between...

I got 0.025m^3 as the answer. Is that correct?

Hi, I need help on this problem: You own a 25kg plastic ocean kayak with a sealed interior filled with air. THe kayak has a total volume of 0.17m^3. The mass of water the kayak displace is 170kg. WHile floating, what volume of water does the kayak displace? Thanks!

how did you get 6.75 as the height?

The answer i got is: 0.62m. Can you verify if that is correct?

Then can I find the height using this equation: h = v^2/2g ?

Thanks Doc Al!

The previous question states that the log rolls at a speed of 3.0m/s when it reaches the bottom of the ramp.

Well, that is the next question I have to solve. That's all the information. Is there a way of solving this problem if the height is not given?