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kvv77 [185]
3 years ago
15

A spring stretches 2 cm when a 10 N weight hangs on it. How far will it stretch with a weight of 20 N ?

Physics
1 answer:
pychu [463]2 years ago
5 0

Answer:

4cm

Explanation:

If it's a simple ratio 2cm:10N to ?cm:20N, It should be 4cm:20N.

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The question is incomplete. If D=1/T then the answer is D, but if instead of =, there is a proportional sign, then the answer is C.
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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

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4 0
2 years ago
How can velocity change even if speed stays the same?​
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Answer:

the change of direction it's going

5 0
3 years ago
The distance from Abdullah's house to his school is 2.4km. Abdulla takes 0.6h to go to school on his cycle but takes only 0.4h t
vladimir1956 [14]

Answer:

The average speed can be calculated as the quotient between the distance travelled and the time needed to travel that distance.

To go to the school, he travels 2.4 km in 0.6 hours, then here the average speed is:

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s' = (2.4 km)/(0.4 hours) = 6 km/h.

Now, if we want the total average speed (of going and returning) we have that the total distance traveled is two times the distance between his home and school, and the total time is 0.6 hours plus 0.4 hours, then the average speed is:

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nignag [31]

Answer: The amount of light that enters the pupil is controlled by the Iris

Explanation:

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