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Two identical point charges are fixed to diagonally opposite corners of a square that is 0.455 m on a side. Each charge is +2.70 10-6 C. How much work is done by the electric force as one of the charges moves to an empty corner?
A 0.520kg glider on an air track is attached to the end of an ideal spring with force constant 453N/m; it undergoes simple harmonic motion with an amplitude of 4.10×10?2m. Compute the maximum speed of the glider
The internal energy of a gas is 547.J. The gas is compressed adiabatically, and its volume decreases by 125.cm3, what is the internal energy of the gas after the adiabatic compression
in a ski race starting from rest a 65kg skier descends through 120 meters of vertical drop nd finishes his run at 58 miles per hour. how much work is done by the skier
You're using a rope to pull a sled at constant velocity across level snow,with coefficient of kinetic friction 0.050 between sled and the snow. With what force should you pull with the rope horizontal
Suppose a soccer player kicks the ball from a distance 21.5 m toward the goal. Find the initial speed of the ball
A d = 4.57 mm diameter wire carries an electric current of I = 14.3 A when the electric field is E = 7.53×10-2 V/m along the wire. What is the conductivity of the wire
question1a painter of mass 140.0 kg stands on a platform of mass 55.0 kg and pulls on two ropes that hang over pulleys
Two boxes sit side-by-side on a smooth horizontal surface. The lighter box has a mass of 5.96 kg, the heavier box has a mass of 7.46 kg. Calculate the contact force between these boxes
The weight of passengers on a roller coaster increases by 57 as the car goes through a dip with a 39 radius of curvature. What is the car's speed at the bottom of the dip
A luggage handler pulls a 20.0-kg suitcase up a ramp inclined at 24.0° above the horizontal by a force of magnitude 148 N that acts parallel to the ramp. Calculate the work done on the suitcase by the force
what is the new force between the objects. if Andromeda contains roughly the same number of stars and attracts the Milky Way with a gravitational force of 2.4*10^30N.
The lenses used in a compound microscope have powers of + 90 D and + 60 D . If a total magnification of -250 x is desired, what should be the distance between the two lenses
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