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1. What is electric current?
2. Describe the phenomena of flow of electric current. Explain the concept of drift velocity.
3. Define electric resistivity and resistance. How does the temperature affect resistivity and resistance?
4. State Ohm's law.
5. Discuss series and parallel arrangement of resistances.
6. Define equivalent resistance. Derive expressions for equivalent resistances for series and parallel arrangement of resistances.
on october 21 2001 ian ashpole of the united kingdom achieved a record altitude of 3.35 km 11 000 ft powered by 600 toy
A pen contains a spring with a spring constant of 251 N/m. How much work is done by the spring force to ready the pen for writing
One rod is made from lead and another from quartz. The rods are heated and experience the same change in temperature. calculate the initial length of the quartz rod
You and your friend each drive 50.0 km. You travel at 90.0 km/h. Your friend travels at 95km/h. How long will your friend be waiting for you at the end trip
Your projectile launching system ispartially jammed. It can only launch objects with an initialvertical velocity of 42.0 m/s, What horizontal velocity do youneed to program into the system
A pitcher throws a curveball that reaches the catcher in 0.53 s. The ball curves as it is spinning at an average angular velocity of 315 rev/min (assumed constant) on its way to catcher's mitt. What is the angular displacement of the base ball (in ra..
1 for an experiment a laser which emits light at a single wavelength a monochromatic source was used. how would the
Estimate the average force exerted on a soccer ball while it is being kicked hard. Assume the kicker is of World Cup quality
A gas is compressed inside a cylinder. An average force of 100N acts to move the piston 0.2m. Through the compression, 5J of heat are conducted away from the gas. What is the change in internal energy of the gas?
A 20-kg loudspeaker is suspended 2.0 m below the ceiling by two ropes that are each 30° from vertical, what is the magnitude
A capacitor is discharged during a 90.0 resistor. The discharge current decreases to 22.0 percent of its initial value in 3.00ms .What is the value of the capacitor? Express your answer with the appropriate units.
Assuming that the smallest discernable and measurable relief displacement that is possible on a vertical photograph taken at 3000 feet above the ground is 0.5 mm; determine the height of a telephone utility box
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