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valkas [14]
3 years ago
7

PLEASE HELP ASAP!!!! A huge thanks to anyone who can help me with 14 problems. I'll do anything to return the favor. All true an

d false. I will post two more sets of questions. PLEASE do not cheat and answer a random answer or just one question
1. True or False: Bacteria on legumes are able to fix nitrogen from the air.

2. T or F: Mitosis results in new cells with the same number of chromosomes as the parent cell from which they came.

3. Bile breaks down proteins for digestion.

4. A characteristic common to all biomes is the presence of cycles such as the nitrogen cycle.

5. The DNA molecule has a sugar-phosphate backbone.
Physics
1 answer:
snow_lady [41]3 years ago
4 0
Hello, I see you are in a jam. Lemme help.

1.) True
2.) True
3.) True
4.) True
5.) True

LOL these are all true ;)
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A flashlight contains a battery of two cells in series, with a bulb of resistance 12 Ohms. The internal resistance of each cell
Elina [12.6K]

Answer:

1.5024

Explanation:

Draw a diagram. Put the two cells in series. Now draw 3 resistors. Two of them equal 0.26 ohms each. The third one is the lightbulb which is 12 ohms.

R = 0.26 + 0.26 + 12 = 12.52

The bulb has a voltage of 2.88 volts across it. You can get the current from that.

i = E / R

i = 2.88 / 12 =

i = 0.24 amps.

Now you can get the voltage drop across the two cells.

E = ?

R = 0.26

i = 0.24 amps

E = 0.26 * 0.24

E = 0. 0624

Finally divide the 2.88 by 2 to get 1.44

Each cell has an emf of 1.44 + 0.0624 = 1.5024

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