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A soccer ball of mass 450 grams is initially moving horizontally east at 16 m/s. You kick it so that it moves horizontally north at 17 m/s. The collision lasts 0.05 s. Find the magnitude and direction of the average force you apply to the ball.
A metal conducting sphere of radius 15cm has a net charge of 30nC and is located with its center at the origin. what is the electric potential at the origin
two identical conducting spheres fixed in place attract each other with an electrostatic force of 0.108n when their
Determine the binding energy of the last neutron in a 2311Na nucleus. The masses of the neutral atoms of 2311Na and 2211Na are 22.989770 u and 21.994437 u
A 100W, 110V lightbulb has a resistance of 14.0Ohm when cold (20.0oC) and 112Ohm when on (hot). Calculate its power consumption at the instant it is turned on
A skier starts from rest at the top of a hill that is inclined at10.4°with the horizontal. The hillside is 245 m long, and the coefficient of frictionbetween snow and skis is 0.0750. At the bottom of the hill, thesnow is level and the coefficient ..
a devive consists of four balls. just after the impact, what is the angular speed of the device
a neil a. armstrong was the first person to walk on the moon. the distance between the earth and the moon is 3.85 times
The 1000 kilogram mass of a car includes four tires, each of mass (including wheels) 34 kilogram and diameter 0.80 meter. Find the fraction of the kinetic energy in the tires and wheels
Two point charges +72 uC (on the left side of the negative charge) and -20.0 uC, fixed on the x-axis, are separated from each other by a distance of 18 centimeter. Find at what point along the x-axis is the electric field zero
Two identical point charges are fixed to diagonally oppositecorners of a square that is 2.8 m on aside. Each charge is +3.5 µC. How much work is done by the electricforce as one of the charges moves to an empty corner?
Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun but a much smaller diameter. If you weigh 660N on the earth, what would be your weight on the surface of a neutron star that has the same mass as ..
The heating element of a clothes dryer has a resistance of 11 ? and is connected across a 240-V electrical outlet. What is the current in the heating element
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