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A double slit with d= 0.02 mm is illuminated by a blue laser at 450 nm and a red laser at 650 nm. When you look at the diffraction pattern on a distant screen 3m away, what is the distance separating the blue and red fringe?
A speed skater moving across frictionless ice at 8.4 m/ s hits a 5.2 m -wide patch of rough ice. She slows steadily, after that continues on at 6.3 m/s.
At what height above the surface of the earth does the balloon have a velocity of 8.10 m/s.
If 45 g is suspended at 25 degree, 105 g is suspended at 85 degree, and 65 g is suspended at 330 degree, what mass must be suspended at what angle to balance these three forces?
even as Jo moves off in the opposite direction at a speed of 1.27m/s. assuming that friction is negligible, find out Al's mass.
What is the mass of a puppy that sits on the other piston and balances the person?
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 9.0 m/s.
A lead ball is dropped into a lake from a diving board 5 above the water. After entering the water, it sinks to the bottom with the constant velocity equal to the velocity with which it hit the water. The ball reaches the bottom 3.20 after it is f..
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary.
Find the frictional torque, which is assumed to be constant. Find the moment of inertia of the wheel.
It is possible to produce artificial gravity on a space station by having the station rotate. Explain how this would work. What would be some benefits and drawbacks to this approach?
Two charged spheres are 8.45cm apart. They are moved, and the force on each of them is found to have been tripled. How far apart are they now.
A lens which is 40.0 cm from an object forms an image of the object on a card 20.0 cm away. Determine what is the focal length of the lens? If the height of the image is .75 cm, what is the height of the object?
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