Recent content by drmermaid

To start with you need to look at what is given in terms of your resistors. For R1 you have PD and Power; and R4 you have Current and Power so use the formulas for power to find those resistances. R1 and R3 are in series; R2 and R4 are also in series To find the total resistance you will have...

I thought this looked like a projectile question. The question didn't mention a take of angle so looking at what was given I think that angle is horizontal so its 0 degrees. You need to vectorise everything two because this is a two dimensional question. The velocity of take off first- Vx= V...

It was in my physics homework so who knows who else wants to figure it out.

Although I am late with an answer for the original author someone might benefit. You need to calculate the respective Resistances for Copper and Aluminium using their resistivities. The problem also stated that the wire was 12 gauge- I found the xs Area to be 3.310 x 10^-6 m2 (looked this up on...

I agree with jtbell, they are vectors. When written without the vector sign you are being given the magnitude without the direction.