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Relate the questions to the concepts of Resistors in Series and in Parallel
What happens to the headlights of a car if it had been accidentally smashed to a light post resulting to the breakage of the right portion of its headlight?
A sled is pulled from rest by a net force of 2.8 N [forward]. The sled moves 7.4 m, reaching a velocity of 3.9 m/s [forward]. Determine the mass of the sled.
Charges are equal and opposite on two parallel plates. When space was evacuated, the electric field was 2.80 x 105 V/m. When it was filled with a dielectric material, the electric field was 1.20x105 V/m. What is the dielectric constant? What is the material?
An electromotive force of a cell is .8 5 V and is connected to a load of 4.25Omega , the voltage drops to 2.0 V. Find the current and internal resistance of the cell.
A 100g sample of Aluminum ( C= 0.90J/gC)at 120°C and a 150g sample of Iron metal (C=0.45J/C)at 90°C were placed in a container of 80g of water at 15°C. What is the final temperature of the mixture?
Can you show me the solution?
Find the pressure exerted on a person by a few plastic blocks of total mass 42 kg, the bottom of which in contact with the person has an area of 840 cm2.
Your job is to lift 25.0 kg packaged baxes a vertical distance of 1.0 m from the ground onto the bed of a delivery truck. How many packaged boxes would you have to load onto the truck in one minute for your average output power that goes into lifting the boxes to be 0.11 hp?
a. A certain battery has a 12.0 V EMF and an internal resistance of 0.005 Ω. Find the current, terminal voltage, and power dissipated by a load with 1.000 Ω.
b. How much current moves through your fingers (resistance: 1200 ohms) if you touch them to the terminals of a 6 V battery?
with solution, thank you!
A. What is the resistance of an electric frying pan that draws 12 amperes of current when connected to a 120 V circuit?
B. If your skin were very moist so that your resistance was only 1000 ohms, and you touched the terminals of a 24 V battery, how much current would you draw?
C. A certain battery has an 18.0 V EMF and an internal resistance of 0.015 Ω. Find the current, terminal voltage, and power dissipated by a load with 0.500 Ω.
with solution, thank you!
The work done on a stretching a spring it to 3.50 cm from its equilibrium length is 14.0 3. (a) How much force is required to stretch it at that
distance? (b) If a block of mass 2.75 kg moving at 4.8 m/s hits and runs into the same spring at its unstretched length, what is maximum compression of the spring?
