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ohaa [14]
3 years ago
13

Which of these actions would increase heat transfer between two objects?

Physics
2 answers:
sergejj [24]3 years ago
7 0

Answer:

b- increases the area of their contact

Explanation:

i did it in edge! ; )

Kaylis [27]3 years ago
3 0

Answer:

Increasing the area of their contact.

Explanation:

Just took the test and it was right.

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A wave's frequency is 2Hz and its wavelength is 4 m. What is the wave's speed?
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4 0
3 years ago
The resistance of the body varies from approximately 500 kΩ (when it is very dry) to about 1.20 kΩ (when it is wet). The maximum
scoray [572]

Answer:

a) The maximum potential difference the wet human body can take = 5.88 V

b) This value is very much lower than the normal voltage of household outlets (120 V) and isn't in the same range at all.

This means one should be very careful operating electrical appliances (even at home) while the body is wet.

Explanation:

From Ohm's law, V = IR

The resistance of the body when the body is wet = 1.2 kΩ = 1200 Ω

Maximum safe current that the body can withstand = 4.90 mA = 0.0049 A

Maximum voltage the body can withstand while wet = (Maximum safe current that the body can withstand) × (Resistance of the body when the body is wet) = 0.0049 × 1200 = 5.88 V

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3 years ago
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