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A fan is spinning at 900 rpm. When its motor is turned off it makes 75 rev before coming to a stop. If the work down by dissipative forces is 44.4J, Find the moment of Inertia of the fan and the torque due to dissipative forces.
An inquisitive physics student and mountain climber climbs a 55 m cliff that overhangs a calm pool of water. At what time after release of the first stone will the two stones hit the water
Object A, which has been charged to + 29.2 nC, is at the origin. Object B, which has been charged to - 28.9 nC, is at ( x,y ) = ( 0.0;{rm cm},; 1.50 cm ).What is the y-component of force (vec{F}_{rm A ; on ; B})_{rm y} on B due to A.
A car starts from rest and moves along a straight line with an acceleration of a = (3s -1/3) m/s2, where s is in meters. Resolve the car's velocity and position when t = 10 s.
A note played on a piano is 4719 Hz. If the speed of sound is 347 m/s, what is the wavelength of the note?
A parallel beam of light with an energy flux S of 10 W/cm2 falls for 1 hour on a perfectly reflecting plane mirror of 1.0 cm2 area. what force acts on the mirror
A wood block floats on water with 35% of its volume above the surface (of water), what is the average density of the block (in kg/m3)
A 640-g hollow ball 21cm in diameter is suspended by a wire and is undergoing torsional oscillations at a frequency of 0.78 Hz
A point charge is moved in an electric field. The potential changes from -87 V to +30 V between the initial and final position. The work done by the electric field is 156 J
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
Compute the distance of two point's p1 and p2 in the x-y plane with the following Cartesian coordinates: p1= (-5m, +8m), p2= (+3m, +2m). Draw the position vectors into appropriate-points.
Two cars are traveling along a straight road. Car A maintains a constant velocity of 110 km/h and car B maintains a constant speed of 110 km/h. At t= 0, car B is 45 km behind car A. How far would car A travel from t = 0, before it is overtaken by c..
Consider an object on an incline where friction is present. The angle between the incline and the horizontal is ? and the coefficient of kinetic friction is ?k. Find an expression for the acceleration of this object
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