Recent content by rhoadsy74

Im a sophmore first off. I had a four week career study with lockheed martin amd I already took digital electronics in high school and I am taking digital logic this semster I am in my major courses. So requirments are not a problem. I was looking for any suggestions on where I could apply or...

Hi everyone, I am trying to apply for an internship for electrical engineering and was wondering if anyone knew of any good paid internships around the Philadelphia area? I have already applied to Lockheed Martin and some of the places I looked were looking for graduate students. If you...

Kinematics question -- Rocket launch Homework Statement A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical acceleration of the rocket is given by ay=(2.70m/s3)t, where the +y-direction is upward. A.What is the height of the...

kinematics question -- An automobile accelerating and braking Homework Statement According to recent test data, an automobile travels 0.250 mi in 19.9 s, starting from rest. The same car, when braking from 60.0 mi/h on dry pavement, stops in 146 ft. Assume constant acceleration in each part...

Cos of theta equals the x- coordinate. I realize that I got it wrong, but can you explain to me where i went wrong and how the homework came to that answer?

I believe I did make a mistake somewhere, just not sure where.

The answer to this question is 3/(square root) 14. That is what my homework is telling me. How do you come to that answer?

Why should it be negative? I understand that there are certain trig functions that are (+) and (-) in certain quadrants, but why is the the whole function negative?

it is supposed to alpha.

I used the Pythagorean theorem to find the (square root) 6/7 but it should be negative because of the fact that it is the third quadrant. What I don't understand is how to determine whether the whole function is (+) or (-). Can you help me?

Homework Statement Use the figure to evaluate the function that f(x)=sin(x) f(θ/2) Homework Equations n/a The Attempt at a Solution x2+y2=1 x= -2/7 (-2/7)2+y2=1 y=√(6)/7 sin(θ/2)= +/- √(1-cos(θ)/2) (the whole function is over 2 inside of the square root) =+/-...