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You need a diffraction grating that will disperse the visible spectrum (400nm to 700nm ) through 35.0 degrees in the first-order pattern. What must be the line density of this grating? (Hint: Use the fact that sin(A+B) = sinAcosB + cosAsinB.)
A proton is at the origin and an electron is at the point x=0.63nm, y=-0.45nm. Find the magnitude of electric force on the proton
An object fired at an angle of 39 degrees above horizontal takes 1.10 s to travel the last 12.5 m of its vertical distance, determine With what velocity was the object launched
A metal sphere is suspended by a silk thread and charged positively. If in carrying a positive charge of 5.0E-8 C, what is the potential difference between the ground and the sphere
While an elevator of mass 824 kg moves downward, the tension in the supporting cable is a constant 7736 N, What is the elevator's speed at t = 4.10 s
A door has mass M, width W, and height H. It is attached to a door frame by only two hinges: one at 5H/6 (the top hinge) and one at H/6 (the bottom hinge). Calculate the force that the door frame exerts on each hinge
A student holds a laser that emits light of wavelength 633nm. The beam passes through a pair of slits separated by 0.3mm, Find the speed of the first-order maxima on the screen
A concrete highway is built of slabs 14m long (20 degrees Celsius). How wide should the expansion cracks between the slabs be
Two cylindrical bars, each with diameter of 2.30 cm, are welded together end to end. compute the resistance between the ends of the welded bar
You are standing at = 9.0 km Lightning bolt 1 at x= 0km and lightning bolt 2 at x = 12.0km. what is the time difference between the two flashes
the wheels of an automobile are locked as it slides to a stop from an initial speed of 30.0 m/s. how far does it take the car to stop
A block of ice weighs 100 N. You can lift the block vertically a distance of 2 m. You can also push the same block up a ramp that is 4 m long, What is the increase in the block's gravitational potential energy in each case
A 67-g ice cube at 0°C is placed in 732 g of water at 22°C. What is the final temperature of the mixture
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