Minimum speed of the pail
A pail of water is rotated in a vertical circle of radius 1.10 m (the approximate length of a person's arm). What must be the minimum speed of the pail at the top of the circle if no water is to spill out?
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Light is incident on a slit 0.750 mm wide. On a screen 2.00 m away, the distance from the central maximum to the first minimum is 1.35 mm. Calculate the wavelength of the light.
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