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A block of mass 4.7 kg slides 20 m from rest down an inclined plane making an angle of 24 o with the horizontal. If the block takes 10 s to slide down the plane, what is the retarding force due to friction?
a car accelerates from 23 ms to 28 ms while travelling a distance of 1.97 m due to a 97800-n net force acting on it.
suppose the driver in this example now slams on the brakes, stopping the car in 4.00s. find the acceleration and the distance the car traveled while braking
Estimate the rms electric field in the sunlight that hits Saturn, knowing that the Earth receives about 1350 W/m2
At t = 0 a grinding wheel has an angular velocity of 27.0 rad/s. It has a constant angular acceleration of 32.0 rad/s2 until a circuit breaker trips at t = 2s. From then on, it turns by 432 rad as it coasts to a stop at constant angular accelerati..
2 kg of a saturated mixture aat 200 kpa and 20 quality is heated at a constant temperature until it becomes a saturated
At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 345 N/C. At a distance r2 from the charge, the field has a magnitude of 120 N/C
What was the ray's angle of incidence on the diamond. What should be the magnitude of , so that the net work done by it and the kinetic frictional force is zero.
At a construction site, a 23.0 bucket of concrete is connected over a very light frictionless pulley to a 310 box on the roof of a building. (See the figure.) There is no appreciable friction on the box, since it is on roller bearings. The box starts..
Using a block of transparent, unknown material, What is the index of refraction of this material
An 85-kg jogger is heading due east at a speed of 2.5 m/s. A 55-kg jogger is heading 24° north of east at a speed of 3.7 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
a 40 x 10^3 kg train is travelling at 8.3m/s when the engineer sees a sheep on the tracks. she throws the emergenxy brakes on. How long is it before the rain will come to a complete stop
Tarzan, who weighs 688 N, swings from a cliff at the end of aconvenint vine that is 18m long. From the top of the cliff tothe bottom of the swing, at what angle with the vertical does it break
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