Recent content by aboojoo

Doh! That went right over my head. It never occurred to me I could just make that one up , or estimate it, so to speak.

So this means I cannot find the specific power rating of the device using the given data? If so how did the textbook arrive at the answers (attachment, answers.jpg). Also, does that mean I cannot actually find the amount of time in hours, that each device is used in a week, but rather the...

52, which is what i used to find the energy consumption per week, but how do I apply that to find hours of use per week?

Homework Statement Please look at the attachment, I'm not sure how to go about figuring out the estimated hours of use per week for the appliances, and the Power(wattage) as well. I figured to find out one you would need the other, they are given in the answers section but I need to know how...

I think I understand now, but am still puzzled by how the original text managed to get to the answer by simply squaring both sides of v2=v1+aΔt. It is a method I'm unfamiliar with since I do not know those steps. I attached a picture for the rest of the steps that were to be done after yours...

Could you show me the exact algebraic steps involved? Not sure where the 2a(v1Δt) comes from.

Unsure of how to start the algebraic process of combining these two equations: v2=v1+aΔt and Δd=v1Δt+1/2aΔt2 , The attached is a screenshot of the course material that I need help with. It demonstrates how to combine the two equations but it seems to skip some steps that I can't...

I totally understand now , thanks a lot guys you've really helped, both conceptually and algebraic.

1. The problem For sake of format I attached the a screenshot of the course material I'm having difficulty wrapping my walnut around. Which is how: Total Displacement = Area of Triangle + Area of Rectangle or Δvector d = Atriangle + ARectangle or Δvector d = 1/2 (V2-V1)Δt +V1*Δt...