2) CDs and DVDs turn with a variable w that keeps the tangential speed v. constant. Find the angular speed w that a CD must have in order to give it a linear speed v. = 1.25 m/s when the laser beam shines
on the disk
(a) at 2.50 cm from its center, and
(b) at 6.00 cm from its center.

The material that keeps its new shape after it is stretched is called?

A4.0-cm tall light bulb is placed a distance of 32.0 cm from a concave mirror having a focal length of 16.0 cm. determine the image distance

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.