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1. The position vectors of points P and Q are given as 5a x + 12a y + a z and 2a x - 3a y + a z , respectively. What is the distance vector from P to Q? What is its length? Is the length segment parallel to the xy plane? What are the coordinates of points P and Q?
What must be the resistance of a heating coil which will be utilized to raise the temperature of 500 g of water from 28 degrees C to the boiling point in 2.0minutes, assuming that 25 % of the heat is lost? The heater operates on a 110-V line.
An unpolarized laser has an average power of .6 mW. At a distance of 10 m it forms a circle with a diameter of 2 mm. Intensity = 5.23 x 10^-4. Erms= .444 v/m. what is the speed of light in the polarizer
An inductor has an inductance of 0.074 H. The voltage across this inductor is 30 V and has a frequency of 850 Hz
A sphere of radius 4.51cm and uniform surface charge density +12.1 µC/m2 exerts an electrostatic force of magnitude 4.50×102 N on a point charge +1.55 µC. Find the separation between the point charge and the center of the sphere
Suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of +2.30 pC. By what percentage has the mass of the cube decreased
An object that is 5 centimeter tall is located 10 centimeter in front of a converging lens that has a 6 centimeter focal length. Determine what is the size of the image produced
A police car is stopped for a red light. A truck moving at a constant velocity of 15 m/s passes the police car, and illegally goes through the red light. How far will the police car have traveled in this time
An explosion breaks an object initially at rest into two pieces, one of which has 1.8 times the mass of the other. compute how much kinetic energy did the heavier piece get
Assume the square wire loop is replaced with a smaller one, made of the same wire that is 0.02 m on a side, half as long as the original.
If a washing machine's drum has a radius of 26 cm and spins at 4.0 rev/s, what is the strength of the artificial gravity to which the clothes are subjected
A pulley wheel that is 22.0 cm indiameter has a 5.2 m long cord wrappedaround its periphery. How long does the unwinding take
How does the magnitude of electric force compare between a pair of charged particles when they are brought to half their original distance of separation? To one-quarter their original distance? To 4 times their original distance? (What law guides you..
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