Recent content by einstein101

Why h alone, is it because i have to sub x for 1 ?

Homework Statement What is the gradient of the chord of the curve y = 2x^2 between the points x = 1 and x = 1+ h? Homework Equations differentiation by first principles dy/dx = f(x+h) - f(x)/hThe Attempt at a Solution use of the formula to receive 4x +2h

so travel during first 8 seconds=u x 8 +1/2(a)(8)^2 then what do i do?

But how do I find the initial velocity for the equation? And how would I exactly go about finding the acceleration?

Homework Statement An object that is acclerating uniformly travels 22.5 m in the eighth second of its motion. a) what is the acceleration of the object? b) how far does the object travel in 6 seconds? Homework Equations I'm not exactly sure what equation would be necessary- perhaps...

Homework Statement How would you find the displacement of a velocity/time graph when it is in the shape of a parabola? Homework Equations I know Velocity x time = displacement. The Attempt at a Solution I know that velocity x time = displacement, but how do you find the area under...

Thanks Emily I got the answer too now. You were right I was mixing the units up.

Area relates to the 0.079 mm of wire. In the question it doesn't say mm squared. the answer is supposed to be 4.5 meters.

Homework Statement The resistivity of nichrome wire is 1.1micro ohm meters. What length of wire of diameter 0.079 mm is required to provide resistance of 1.0 Kohm? Homework Equations R=resistivity x length/area The Attempt at a Solution 1000ohms = ? x 0.0011/0.079 79 = ? x...