Recent content by pooka

Okay i just tried doing the problem. Just need to clarify some things, are both the mouse's initial horizontal and vertical velocity zero then? for the cat is the horizontal velocity 5 while the inital vertical velocity is 0?

okay thanks! now i know how to do the question =)

A mouse is being chased by a cat across a table of height 1.5 m. Before the mouse was about to be eaten, it deftly steps off the table edge, while the cat zooms by and off the table at 5 m/s. How far from the mouse does the cat land? I don't know how to do this question, because the mouse's...

thank you so much for helping! =)

I think I am beginning to understand, so V=kNBA sin (kt) so plugging all this in V=(32)(10)(0.6)(4*10^-4)sin(32t) but what is t? Is it one, because if it is like a sine wave, one revolution is from 0 to 2pi? or is it 2pi?

Does this mean I divide the diameter by 8 then?

sry i can't read the equation you just wrote

No it's not calculus based.

Okay so there's also part C to this problem: If you use B = 0.6 T and the area of the coil = 4 cm^2, with the coil of 10 loops, but now the loop is rotating in the B field at a speed of 4 revolutions per second, what is the induced voltage as it rotates through one revolution? For part C, do...

I got 0.0037 s.

Okay. So I am thinking that I take the 4 cm^2 then using the area of a circle: A=pir^2 I will figure out the radius. Then times that by 2 to get the diameter. After that convert cm to m. Then divide that by 6 to get the time?

how would you find the time? I'm a bit confused.

yah. but time is not given.

Yup! The fundamental frequency is given by fn = v/λn. I first found v by using the v = fλ where f is the 400 Hz times the wavelength 4/3 Then I divided the v by 4.

A loop of area 4 cm2 has its plane parallel to the field lines of the magnetic field, B = 0.6 T, as shown in the figure. The loop is pulled in the opposite direction of the field with a constant velocity of v = 6 m/s. http://img375.imageshack.us/img375/4139/picbs3.th.jpg A. What is the...