Recent content by ProgMetal

Homework Statement Consider now the point P(a, kan) on the general curve y=kxn. where n is any non zero real number and k >0. find the equation of the tangent at the point P find coordinates of the points A and B where the tangent meets the x-axis and y-axis respectively. Homework...

Homework Statement If I have a cup filled with boiling water, where will heat loss by conduction and heat loss by convection occur? Homework Equations The Attempt at a Solution I think that heat loss out of the top of the cup (water in contact with air) will be convection, and...

Homework Statement For the function y= |x2-4x+3| a. Sketch the function b. Is the function continuous? Explain. c. Is the function differentiable everywhere? explain d. find gradient of curve at the point where x = 3/2 Homework Equations chain rule, differentiating... The...

I see. Thanks a lot! :)

ok, so I did the right thing in converting the degrees C into kelvins? and -960W is a realistic ballpark figure?

Homework Statement a bushwalker wears clothing that is 2.0cm thick with a surface area of 1.9m^2. The material has k = 0.042 WM^-1K^-1. Her skin temperature is 33 degrees C and the ambient temp. is 0 degrees C. Calculate rate of heat loss through her clothing while she is sitting...