You and a group of friends are on a day trip to a nearby national park....
You and a group of friends are on a day trip to a nearby national park. After a fun-filled day of fishing and boating, you are ready to head back home when you find that your car battery is dead. Your friend offers to use his car's battery and jumper cables to charge yours. The connections are shown in the two diagrams below. The internal resistance of your car battery is rd = 2.65 ?, that of your friend's battery is rL = 0.01 ?, and that of the starter is rS = 0.07 ?. The live battery has a voltage of 12.0 V and the dead battery in your car has a voltage of 10.0 V. What are the currents through the starter and the dead battery? (at least one decimal point)
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You and a group of friends are on a day trip to a nearby
national park....
You and a group of friends are on a day trip to a nearby national park....
You and a group of friends are on a day trip to a nearby national park. After a fun-filled day of fishing and boating, you are ready to head back home when you find that your car battery is dead. Your friend offers to use his car's battery and jumper cables to charge yours. The connections are shown in the two diagrams below. The internal resistance of your car battery is rd 3.78 ? that of your friend's battery is...
Consider the circuit below. It is something you might use to approximate the circuit being used...
Consider the circuit below. It is something you might use to
approximate the circuit being used while trying to jump start a
car.
a) The elements in this drawing represent the dying battery
and its internal resistance, the jumper battery and its internal
resistance, and the starter motor. (Remember the jumper battery is
used to charge the dead battery and power the starter motor.)
Identify which parts represent each and explain your
reasoning.
b) Find the current in the motor...
use UNITS for all final answers no collaboration, no talking to each other is allowed you...
use UNITS for all final answers no collaboration, no talking to each other is allowed you can use your book and your calculator, but nothing else! (1) 10 points Three identical charges (q- -4.8 pC) lie along a circle of radius 2.0 m at angles of 30°, 150°, and 270°, as shown in the figure. (a) What is the resultant electric field at the center of the circle (magnitude and orientation)? (b) What is the electric potential at the center...
3-7 3. On a sunny (but chill) day, you sit in a cold car and turn...
3-7
3. On a sunny (but chill) day, you sit in a cold car and turn the heater on. Which is an example of heat conduction? through the windshield (a) The sunlight enters the car (b) Hot air blows from the heater by your feet, rising up through the car (c) Your legs feel cold as they touch the car's seat 4. You touch an in the electroscope... electroscope with a negatively charged rod. The two metal leaves (a) move...
You and a group of friends are on a day trip to a nearby national park. After a fun-filled day of fishing and boating, you are ready to head back home when you find that your car battery is dead. Your friend offers to use his car's battery and jumper cables to charge yours. The connections are shown in the two diagrams below. The internal resistance of your car battery is rd 3.78 ? that of your friend's battery is...
Consider the circuit below. It is something you might use to
approximate the circuit being used while trying to jump start a
car.
a) The elements in this drawing represent the dying battery
and its internal resistance, the jumper battery and its internal
resistance, and the starter motor. (Remember the jumper battery is
used to charge the dead battery and power the starter motor.)
Identify which parts represent each and explain your
reasoning.
b) Find the current in the motor...
use UNITS for all final answers no collaboration, no talking to each other is allowed you can use your book and your calculator, but nothing else! (1) 10 points Three identical charges (q- -4.8 pC) lie along a circle of radius 2.0 m at angles of 30°, 150°, and 270°, as shown in the figure. (a) What is the resultant electric field at the center of the circle (magnitude and orientation)? (b) What is the electric potential at the center...
3-7
3. On a sunny (but chill) day, you sit in a cold car and turn the heater on. Which is an example of heat conduction? through the windshield (a) The sunlight enters the car (b) Hot air blows from the heater by your feet, rising up through the car (c) Your legs feel cold as they touch the car's seat 4. You touch an in the electroscope... electroscope with a negatively charged rod. The two metal leaves (a) move...
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