Physics, 08.11.2019 23:31 connorgking
Asolid, uniform disk of radius 0.250 m and mass 45.2 kg rolls down a ramp of length 5.40 m that makes an angle of 17.0° with the horizontal. the disk starts from rest from the top of the ramp.
(a) find the speed of the disk's center of mass when it reaches the bottom of the ramp. m/s
(b) find the angular speed of the disk at the bottom of the ramp. rad/s
Answers: 2
Physics, 21.06.2019 21:30, canyonrico05
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?
Answers: 3
Physics, 22.06.2019 05:30, dontcareanyonemo
What are similarities and differences of reflection, refraction, diffraction and absorption?
Answers: 1
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