Recent content by alexs2jennisha

but i did that in my original post and the answer was wrong.

It's pushed 5.5 m, right?

So would WFr = (μk)(Fn)(dx)cos(θ))+μk)(Fn)dy(sin(θ))?

Okay. So here are my calculations: Fn = mgcos(θ) +Fpsin(θ) =(18 kg)(9.8 m/s2)(cos(32)) + 150sin(32) = 229.08 N Then, WFr = (μk)(Fn)(d)(cos(θ)) = (0.14)(229.08)(5.5)(cos(32)) = 149.6 Finally, Wnet=0.5mv2 OR v=√(2W)/m= 6.1 m/s...

So in other words, I would use the hypotenuse instead of the 5.5 m up which was given? I tried that and it didn't work also.

didnt i do that in this step μk*FN*d*cosθ?

this question has 4 parts, I am having trouble on the last part but i will post all parts to give context. Part A How much work is done by the horizontal force FP = 150 N on the 18-kg block of the figure(Figure 1) when the force pushes the block 5.5m up along the 32∘ incline? Assuming a...

Homework Statement If you are worried about safely driving after a party, I recommend you just not drive! But if you want to see when you are finally okay to drive, here is a test to see if you are still too “impaired”. Take a dollar bill and have a friend hold the bill from one of the short...

Homework Statement An elevator goes up 180 m by first accelerating at a constant rate of 1.0 m/s2, then staying at a constant speed of 9 m/s and then decelerating at a constant rate of -­‐‑1.0 m/s2. How much time does it take the elevator to go from bottom to top? so i know that d = 180m...

Homework Statement You value a car to be $30,000. If you plan to make continuous payments over 5 years and at an interest rate of r = :1. 1) How much should you pay per year so that the present value of your total payments in 30; 000? 2)What if instead you decided to let your payments...

would r be the formula but solved for x?

Carving it into cylinders still uses the ∏∫R^2dx formula, right? and then my bounds would be on the y axis?

Find the volume of the solid obtained by rotating about the y-axis the region bounded by the curves y= e-2x^2, y=0, x=0, x=1. Should the bounds for the problem be taken from the y-axis or the x-axis? I think that the integral for this problem would be: ∏∫(e-2x^2)dx , is this correct

Homework Statement 1. Show that the function f(x) = x5 -x3 +2x is invertible. Compute the derivative of f-1 at 2. The Attempt at a Solution To find f-1 I switched x and y which gave me x = y5 - y3 + 2y this is where i got stuck because I am not sure how to solve for y after that...