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Two charges charges of -2.1 micro-coulombs and a charge of +2.1 micro-coulombs are placed on the corners of an equilateral triangle where the length of a side is 44 cm as shown in the sketch below. What is the magnitude of the total electric field in the middle of the bottom side of the square? Answer in MN/C (1 x 106 N/C)?
Could not get the image to up load. the positive charge is on the left side of the triangle on the x axis and the negative charges on on the right hand side positivex axis. The positive y axis has the last charge.
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. Each door is 0.740 m wide. Sound of frequency 708 Hz is coming through the entrance from within the room.
What speed must she have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom.
Find out d, the distance between the photogates, using the times and glider length. There is two ways to find this for the up and down directions.
A 51 crate, starting from rest, is pulled across a floor with a constant horizontal force of 250 . For the first 11.5 the floor is frictionless, and for the next 11.5 the coefficient of friction is 0.16. what's the final speed.
Two objects attract each other gravitationally with a force of 2.5×10-10 while they are 0.60 apart. Their total mass is 5.0. Find out their individual masses.
If you were to send a beam of laser light to a space station above an atmosphere and just above the horizon, would you aim the laser above, below or at the visible space station.
A 20 {rm kg} child plays on a swing having support ropes that are 2.3 {rm m} long. A friend pulls her back until the ropes are 39.0^circ from the vertical and releases her from rest.
Three equal point charges, each with charge 1.95 , are placed at the vertices of an equilateral triangle whose sides are of length 0.400 . What is an electric potential energy of the system? (Take as zero the potential energy of the three charges ..
A person who weighs 620 N stands at x = 5m, right on the end of a long horizontal diving board that weighs 350 N. The diving board is held up by two supports, one at its left end at x = 0, and one at the point x = 2.00 m.
Write three methods of increasing the volume of a balloon
A puck slides along the frictionless track shown in the figure with an initial speed of 7.40. Suppose the puck turns all corners smoothly, with no loss of speed.
A cube of ice is taken from the freezer at -8.0 and placed in a 113 aluminium calorimeter filled with 306 of water at room temperature of 20.0. The final situation is observed to be all water at 15.0.
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