Recent content by meeklobraca

No, it shouldnt.

Homework Statement A piston cylinder device with a spring attached initially contains 0.02m^3 of R-134A at 50C. A valve connected to the cylinder is opened and 20kg of R-134A enters the device from a supply line at 800kPa and 80C. The spring is compressed and the piston moves up. The process...

Yes that is the correct integral. IM curious as to why its from 0 to pi/2. If the x value is from -3 to 3, isn't that a half a circle, hence 0 to pi?

I wish I knew how to type this out with the proper symbols but here it goes. It says to change the following to cylindrical coordinates and evaluate (x^2 + y^2)^(1/2) dz dy dx where -3<=x<=3, 0<=y<=(9-9x^2)^1/2, 0<=z<=9-x^2-y^2Homework Equations The Attempt at a Solution I got 162pi/5 Would...

doing that I get an unsolvable quadratic...

Homework Statement At the instant shown, race car A is passing race car B with a relative velocity of 1ft/s. Knowing that the speed of both cars are constant and that the relative acceleration of car A with respect to Car B is 0.9ft/s^2 directed toward the center of curvature, determine the...

Homework Statement A car speeds towards the outside wall with its horn sounding a frequency of 160 HZ. The sound waves reflected off the wall cause the driver to hear 8.0 beats per second. There is no wind and the speed of sound is 343 m/s. Find the speed of the car. Homework Equations...

Homework Statement The question reads: Two identical pendulums have the same amplitude and the same length (20cm) At time t = 0, one pendulum reaches the end of its swing at x = +6 cm. At the same time the second pendulum has velocity v = -27 cm/s and sits on opposite ends of the...

I don't really have time for that. Let's assume I have all the equations and that I know of them.

So to answer this question I must...?

Homework Statement Red light with wavelength of 700 nm is passed through a two slit apparatus. At the same time, monochromatic visible light with another wavelength passed through the same apparatus. As a result most of the pattern that appears on the screen is a mixture of two colors...

Here in lies the problem Dick. Where do you go from here? im at sqrt 2 = csc (t/2) from which I've turned into sqrt 2 = 1/sin (t/2)

Okay I've found the derivative of t + cot (t/2) to be 1 - csc^2(t/2) * 1/2

Homework Statement Find the absolute max and min of f(t)=t + cot(t/2) on [pi/4, 7pi/4] Homework Equations The Attempt at a Solution I have attempted to find the derivative which I believe is 1 - csc^2 (t/2) * (t/2) which I can simplify down to cot^2 (t/2) * (t/2) Even...

Your b value may look different from mine, but as far as I can tell by checking h=5, both our b values are exactly the same.