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Two coaxial cylindrical conductors . The inner cylinder has radius a = 2 cm, length 10 m and caries a total charge of Qinner = + 8 nC (1 nC = 10-9 C). The outer cylinder has an inner radius b = 6 cm, outer radius c = 7 cm, length 10 m and carries a total charge of Qouter = - 16 nC (1 nC = 10-9 C). What is Ex, the x-component of the electric field at point P which is located at the midpoint of the length of the cylinders at a distance r = 4 cm from the origin and makes an angle of 30o with the x-axis?
A 52-kg mountain climber, starting from rest climbs a vertical distance of 730m. At the top, she is again at rest. Find her efficiency as a heat engine
A ladder of mass 30 kg and length 5m leans against a frictionless wall. The angle between the ladder and the wall is 37 degree. what is the force between the ladder and the wall
Assume that the sun runs out of nuclear fuel & suddently collapses to form a white dwarf star, with a diameter equal to that of the Earth. Estimate the new rotation period of the Sun.
a ray of light moving along the vector -i-2j undergoes refraction at an interface of two media which is the x-z
You are given a galvanometer with a resistance of 17.3 ? and a full scale deflection current of 8.42 mA. Find the maximum current the ammeter is capable of reading
Four objects are situated along the y axis as follows: a 2.01 kg object is at +3.16 m, Where is the center of gravity of this system
Find the focal length (cm) of a simple magnifier which has a magnification of 5.5. Use 25 cm for the near point. Assume that the image is at infinity
A converging lens of focal length 7.830 cm is 19.8 cm to the left of a diverging lens of focal length -6.16 cm. Find the location of the coins final image
You need to use your cell phone, which broadcasts an 720 MHz signal, but you're behind two massive,radio-wave-absorbing buildings that have only a 13 m space between them. What is the angular width ofthe electromagnetic wave after it emerges from bet..
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.63 of the person's regular weight. Calculate the magnitude of the acceleration of the elevator
A rock weighing 400 N sits on the edge of a 60 m cliff. After falling 15 m how much kinetic energy does the rock have
A dragster starts from rest and accelerates down a track. Each tire has a radius of 0.320 m and rolls without slipping. At a distance of 401 m, estimate the linear speed of the dragster
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