Recent content by weskerq8

thanks lowlypion for considering to help, actually i have solved this problem , what i was forgetting was to convert from degrees to radians. that's it :)

Homework Statement An object is undergoing simple harmonic motion with period 0.280 s and amplitude 5.95 cm . At t=0 the object is instantaneously at rest at x= 5.95 cm. Calculate the time it takes the object to go from x= 5.95 to x= -1.44 . Homework Equations X=A.cos(wt) ------> the...

Thanks A lot Cyosis, I thought about it a little and i subtracted the final KE from The total Initial energy and got the correct answer. :)

I really can't think of anything. I tried dividing them, once i used Kf/Ki and the other time i put Ki/Kf. Both were wrong answers. Would you help me please?

Homework Statement On a greasy, essentially frictionless lunch counter, a submarine sandwich of mass 0.480 kg, moving with speed 3.00 m/s to the left, collides with a grilled cheese sandwich of mass 0.270 kg moving with speed 1.10 m/s to the right. 1) If the two sandwiches stick together...

Homework Statement A soccer player kicks the ball off the ground from a horizontal distance of 17 m in front of the goal as shown in Figure 1. He kicks the ball with a speed of 14 ms-1 at an angle of 45o to the horizontal. http://img190.imageshack.us/img190/4143/fig.gif (a) What is...

so according to what you said, my answer going to be 250 meters? here is my work so you can check if it's right or wrong. Car: X= v. t + 1/2 a t^2 X = 1.6 t^2 Truck: X = v. t + 1/2 a t^2 X=20.0 t ---- then, x = x 1.6 t^2 = 20.0 t finally, t = 12.5 s...

Homework Statement A car is stopped at a red traffic light. At the instant the traffic light turns green, the car starts to move forward with a constant acceleration of 3.20 m/s2. At the same time as the light turns green, a truck traveling in the same direction with a constant speed of...

Homework Statement Part A: At a distance of 0.192 cm from the center of a charged conducting sphere with radius 0.100 cm, the electric field is 445 N/C. What is the electric field 0.614 cm from the center of the sphere? Part B : At a distance of 0.212 cm from the axis of a very long...