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A CD has a mass of 16.5 g and a radius of 6.08 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 20.2 rad/s in 0.708 s. Assuming the CD is a uniform solid disk, determine the net torque acting on it.
The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface 1 has an area of 2.2 m2, while surface 2 has an area of 3.5 m2.
An object is initially placed on the optical axis 22.6 cm to the left of a convex lens that has a focal length of 13.1 cm. what is the new image distance
An airplane travelling 1001 m above the ocean at 125km/hr is to drop a box of supplies to shipwrecked victims below. How various seconds (t) before being dropped directly overhead should the box be dropped.
An old hunting weapon was a rock on the end of a string. The hunter would swing the rock in horzontal circles and then throw it. If the rock had a mass of 2 kg and the 2 m long string breaks when the tension is 60N.
A 7.00 x 10^4 kg space probe is traveling at a speed of 14000 m/s through deep space. What is the final speed of the probe
0.25 kg coffee mug is made from a material that has a specific heat capacity of 990 J/(kg°C) and contains 0.31 kg of water. determine the minimum power rating of this heater
A concave mirror produces a virtual image that is three times as tall as the object. what is the radius of curvature of this mirror
Three sheets of plastic have unknown indices of refraction. Sheet 1 is placed on top of sheet 2, what is the expected angle of refraction in sheet 3
An electric motor rotating a workshop grinding wheel at a rate of 9.70 101 rev/min is switched off. How long does it take for the grinding wheel to stop
Two 2.50cm×2.50cm plates that form a parallel-plate capacitor are charged to ± 0.708nC, What is the potential difference across the capacitor
A 1.0-cm-diameter microscope objective has a focal length of 2.8mm. What is the resolving power of the objective if it is used in an oil-immersion microscope with noil= 1.45
Two point charges, q1 = 2.0 pC and q2 = -2.0 pC, are separated by 3.8 µm.(a) What is the dipole moment of this pair of charges
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