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A laser beam of unknown wavelength passes through a diffraction grating having 5590lines/cm after striking it perpendicularly. Taking measurements, you find that the first pair of bright spots away from the central maximum occurs at ± 15.2 degrees with respect to the original direction of the beam.
What is the wavelength of the light?
At what angle will the next pair of bright spots occur?
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 3.00e-4 m3 and its mass is 3.48 kg. (a) What mass of gold is contained in the rock in kg? (b) What percentage of the rock is gold by volume? (..
In a car lift, the output plunger has a radius of 9cm. the weight of the plunger and the car is 21600N. What is the gauge pressure of the hydraulic oil used in the operating lift.
Write down the expression that shows the pressure
An 88 kg spacewalking astronaut pushes off a 640kg satellite, exerting a 640N force for the 0.60 s it takes him to straighten his arms.
Is kinetic energy consumed in the third type of collision studies? Classify the three collision kinds as elastic, inelastic, or completely inelastic.
The air-track carts in the figure are sliding to the right at 1.0 m/s. The spring between them has a spring constant of 120 N/m and is compressed 4.5 cm. Compute the speed of the air track carts held by a string together.
find out where the coyote lands in the canyon.
A uniform cylinder of radius 11 cm and mass 24 kg is mounted so as to rotate freely about a horizontal axis that is parallel to and 4.6 cm, What is the rotational inertia of the cylinder about the axis of rotation
Five seconds later, the police officer leaves on her motorcycle, starts her stopwatch, and accelerates at 2 m/s^2 toward the car. According to her stopwatch, how many seconds until she catches the car
A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. what is the minimum angular spread of the beam
An 82 kg man drops from rest on the diving board 3 m above the surface of the water and comes to rest 0.55 s after reaching the water. What force does the water exert on him.
If she is served 200 of coffee at 84 in a well-insulated container, how much ice at 0 should she add to obtain a final temperature of 31.
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