I'm having some trouble with these two problems.
1.
A 1.2-m-long aluminum rod is rotating about an axis that is perpendicular to one end. A 0.16-T magnetic field is directed parallel to the axis. The rod rotates through one-fourth of a circle in 0.65 s. What is the magnitude of the average...
Here's the problem I need some help with!
Two wires are parallel, and one is directly above the other. Each has a length of 61.3 m and a mass per unit length of 0.0209 kg/m. However, the tension in wire A is 29.8 x 10^2 N, while the tension in wire B is 3.21 x 10^2 N. Transverse wave pulses...
I got it! I didn't realize that I had to factor in air resistance and I found a similar problem which dealt with air resistance...so yay! thanks again! :)
Okay so I can say that the change in potential energy is (.709*9.8*7.58) which gives me 52.66 J...I just don't know what distance to divide by though...grr...i guess i better search my book again :/ thanks for all of your help though :) I appreciate it.
Is your equation F=delta omega/d...is the delta omega the addition of the change in potential and kinetic energy? And are you trying to say that because the object starts from the ground, that the initial PE is O...so you only use the final?
I have a question first, for part a I set KE=PE...so I did (.5*.709*(18.7^2)) and I got 123.965. I took that value and divided that by (.709*9.8) and I got 17.84m...which is close to what the real answer should be (17.66111 m)...do you know why it's off or is it because I am using an equation...
Hi guys! I need some help :)
A projectile of mass 0.709 kg is shot straight up with an initial speed of 18.7 m/s. (a) How high would it go if there were no air resistance? (b) If the projectile rises to a maximum height of only 7.58 m, determine the magnitude of the average force due to air...
Hello! I need a little help here. I have been trying to figure out this problem, but I just can't and I don't know where I am going wrong.
A 116 -kg crate is being pulled across a horizontal floor by a force P that makes an angle of 35.2 ° above the horizontal. The coefficient of kinetic...
To help you with number one, I would recommend drawing a picture and putting what you know. If you use what you have with the equations found in your book (constant acceleration formulas...) then you can probably figure it out. Also, think about what the path of the objective will be when it...
I have a question...do you know what the right answer is...because i think i figured it out...ALSO, I don't know if I'm looking at the problem right...but to me the VERTICAL component (Y) looks to me to be opposite of the angle, which would make the y component 140 sin 35...and the x component...
NEVERMIND! I actually figured out the question myself because I couldn't give up just yet. So if anyone ever has a question like this...here is how I answered it:
I know that the coefficient of static friction (i'll call it Us) is * gravity= v^2/r...so i did .965*9.8 m/s^2= v^2/ (1) *I...
hi. I'm new here and I just have a quick question. I have tried to figure out this problem, but I am just not sure where to go since there is not a lot given. If someone could give me some more direction, that would be great.
PROBLEM: " A car can negotiate an unbanked curve safely at a...