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Problem: A skateboarder, with an initial speed of 4.2m/s, rolls virtually friction free down a straight incline of length 15m in 3.3 s.
Part A: At what angle is the incline oriented above the horizontal?
I need help to find at what angle the incline is oriented above the horizontal.
A catcher catches a 145 baseball traveling horizontally at 32.0. what average force did the ball exert on the catcher
the hydrogen atom consists of a proton of mass 1.67 x 10-27 kg and an orbiting electron of mass 9.11 x 10-31 kg. in one
Two converging lenses, each of focal length 14.5 cm, are placed 59.2 cm apart, and an object is placed 27.4 cm in front of the first. Where is the final image relative to the second lens formed
A bobsled slides down an ice track starting (at zero initial speed) from the top of a 53.9 meter high hill. The acceleration of gravity is 9.8 m/s^2. calculate the bobsled speed at the bottom of the hill
You Push a 325 N trunk up a 20 degree inclined plane at a constantvelocity by exerting a 211 N force parallel to the plane's surface, what are the magnitude and direction of the friction force
A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weighs 180 N. What is the actual frictional force when the man has climbed 1.0 m along the ladder
A 238/92U nucleus is moving in the x direction at 5.0 * 10^5 m/s when it decays into an alpha particle 4/2He and a 234/90Th. Write an expression for the conservation of momentun in the x direction
After completing the experiment with the single slit, you wish to determine the width of the slit. Recall that the wavelength of the laser light is 632.8 nm. If the distance from the central spot to the first minimum in intensity is 4.0 cm and the..
A charge of 160 µC is at the center of a cube of edge 85.0 cm. Noother charges are nearby. Find the total flux through each face of the cube. Find the flux through the whole surface of the cube.
On an airplane's takeoff, the combined action of the air around the engines and wings of an airplane exerts a 8360 N force on the plane, directed upward at an angle of 56.0° above the horizontal.
When a force of 19.0 N is applied to a spring, it elongates 0.0858 m. find out the period of oscillation of a 4.0 kg object suspended from this spring.
a dipole oriented along the x-axis. the dipole moment is p qs.a calculate exactly the potential v relative to infinity
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