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This is the last problem I haven't solve yet... Please help me... A hollow sphere of radius 0.15 m, with rotational inertia I= 0.040 kg.m2 about a line through the center of mass, rolls without slipping up a surface inclined at 30o to the horizontal. At a certain initial position, a sphere...

The siren of a police car rest emits a predominantly frequency of 1600 Hz. What frequency will you hear if you are at rest and the police car moves at 90 km/h a. towards you b. away from you The speed of sound in air = 343 m/s. ^ ^

Thx a lot for answering this ^^ According to the shop manual, when drilling a 12.7-mm-diameter hole in wood, plastic, or aluminum, a drill should have a speed 1250 rev/min. For a 12.7-mm-diameter drill bit turning at a constant speed 1250 rev/min, find: a. The maximum linear speed of any part...

Help !!! Comet Halley moves in an elongated elliptical orbit around the sun. At perihelion the comet distance is 8.75 x 107 km from the sun; at aphelion, it is 5.26 x 109 km from the sun. Find the semi-major axis, eccentricity, and the period of the orbit. Comet Halley was at perihelion in...