Question

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 apart because they both now have negative charge (b) have positive charge move apart because they both now (e) together because one move is positive and the other is negative 5. A positive charge is on the left and a negative charge is on the right. At the halfway point between them, the electric field points (a) to the left (b) to the right (c) the electric field would be zero (d) it depends on if you put a positive or negative charge at the halfway point 6. Two charged particles separated by some distance. If the amount of charge particle is doubled AND the distance between them is doubled, what are on one happens to the force between them? (a) it gets bigger by twice (Fnew = 2Fold) Teu (b) it gets bigger by four times (Fnew = 4Fold) (c) it gets smaller by half (Fneue = Fold/2) Tew (d) it gets smaller by quarter (Fnew Fold/4) a 7. A 25 2 lightbulb is hooked up to a 2 AA batteries (producing a voltage difference of 3.0 V). What is the current through the lightbulb? (a) 0.12 A (b) 0.75 A (c) 12 A (d) 75 A
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Answer 1

3. Your leg feels cold as they touch the car's seat.

This is an example of heat conduction.

First is an example of radiation and second is an example of convection.