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A 2.22 kg steel ball strikes a massive wall at 10.4m/s at an angle of alpha = 58.4° with theplane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.204 s, what is the magnitude of the average force exerted on the ball by the wall?
A solenoid 70 . 8 cm long has 640 turns and a radius of 2 . 34 cm. If it carries a current of 2 . 03 A, find the magnetic field along the axis at its center
A dense rubber buoy is attached to a lead weight when it is accidentally lost overboard from an ocean going vessel. The density of the buoy at the surface was 661 kg/m^3.
a hot-air balloon is open at the bottom. the balloon which has a volume of 214 m3 is filled with air that has an
A particle with a charge of ?1.0 ?C and a mass of 2.4 10-6 kg is released from rest at point A and accelerates toward point B, What is the potential difference VB ? VA between A and B
a hockey player hits a puck so that it comes to rest in 10s after sliding 100ft on the ice. determine a the initial
A man and a woman start at the same location. The man walks North for 30 minutes and travels a distance of 2.2 km, he then walks West for 20 minutes and travels a distance of 1.8 km. What is the woman's average velocity
Imagine that a stove burner provides thermal energy at a rate of 4800 J/s. What is the minimum time that it would take to melt 1 qt (about 1300 g) of ice in a pan placed on that burner
A constant force of 50 N is applied tangentially to the rim of a solid disc with a 60 cm radius. The wheel has a moment of inertia of 40 kgm^2. What is the mass of the disc
consider a point charge with a charge q located at the origin in an empty space. let the electric potential be zero at
What is the charge on the drop. A 13 kg child on a playground swing moves with a speed of 3.6 m/s when the 6.0 m long swing is at its lowest point. What is the angle that swing makes with the vertical when the child is at the highest point.
it is found experimentally that the electric field in a certain region of earths atmosphere is directed vertically
a concave spherical mirror forms an inverted image 4.00 times larger than the object. assuming the distance between
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