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Electric Circuits
If the odometer of a car reads 0 km at the beginining of a trip, and reads 45 km 30 minutes later what is the average speed of the car?
Electric Circuits
A force of 38.0 N accelerates a 5.0-kg block at 5.7 m/s2 along a horizontal surface; how large is the friction force and what is the coefficient of friction?
Electric Circuits
A 250-kg crate is pushed horizontally with a force of 720 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.
Electric Circuits
A horizontal force acts on a body that is free to move. Can the force produce acceleration if it is less than the weight of that body?
Electric Circuits
compute the average velocity of the blood in the aorta of radius 1 cm if the flow rate is 5 liter/min
Electric Circuits
A spaceship moving with an initial velocity of 58.0 meters/second experiences a uniform acceleration and attains a final velocity of 153 meters/second. What distance has the spaceship covered after 12.0 seconds?
Electric Circuits
Three-phase power system
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400+j300 Ohms per phase;[ load 2 is delta-connected with an impedance of 2400-1800j Ohms per phase; and load 3 is 172.8+j2203.2 kVA. The loads are fed from a distribution line with an impedance of 2+j16 Ohm per phase. The magnitude of the line-to-neutral voltage at the end of the line is 24*(SQRT(3)) kV.
1) Calculate the total complex power at the sending end of the line.
2) What percentage of average power at the sending end of the line is delived to the loads?
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400+j300 Ohms per phase;[ load 2 is delta-connected with an impedance of 2400-1800j Ohms per phase; and load 3 is 172.8+j2203.2 kVA. The loads are fed from a distribution line with an impedance of 2+j16 Ohm per phase. The magnitude of the line-to-neutral voltage at the end of the line is 24*(SQRT(3)) kV.
1) Calculate the total complex power at the sending end of the line.
2) What percentage of average power at the sending end of the line is delived to the loads?
Electric Circuits
my question is if change back-light of lquit crystal and I faced toured to the sun can I control the degree of polarization of the sun light .
please send back as soon as will
please send back as soon as will
Electric Circuits
A parallel plate capacitor of capacitance 14.4 pf has plates of area 1 cm2 separated by a
dielectric 0.3 mm thick. If this capacitor is connected to a battery supplying a potential
difference of 30 volts, (a) How much energy is stored? (b) What is the dielectric constant of
the dielectric?
dielectric 0.3 mm thick. If this capacitor is connected to a battery supplying a potential
difference of 30 volts, (a) How much energy is stored? (b) What is the dielectric constant of
the dielectric?
Electric Circuits
If two rods have a negative charge they will do what?
