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vladimir1956 [14]
3 years ago
13

The observation that energy transformations are rarely 100% efficient is seen by scientists as a violation of the Law of Conserv

ation of Energy.
true or false ???
Physics
2 answers:
iVinArrow [24]3 years ago
7 0

Answer:

true I believe

Explanation:

dimulka [17.4K]3 years ago
6 0

Answer:

l

Explanation:

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When a wire within a closed circuit is coiled upon a nail, the nail will _______.
Natali5045456 [20]

when wire is coiled upon a nail then it will posses magnetic characteristics

This is due to the coiled shape it will behave like a solenoid and the magnetic field of solenoid is given as

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so here when wire is coiled up on a nail then due to the magnetic field of the coil the nail will attain magnetic characteristic.

so correct answer will be

<em>Possess magnetic properties </em>

5 0
3 years ago
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A metal object with a mass of 19g is heated to 96c, then transferred to a calorimeter containg 75g of water at 18c. the water an
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Let us say that Cp is the specific heat of the metal object. Then we do a heat balance (heat lost by metal = heat gained by water):

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<span>Cp = 0.893 J/g degC</span>

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3 years ago
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9. A student walks 2 km in 30 minutes. What
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4km/hr

Explanation:

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8 0
3 years ago
Someone please help on this? I just need the diagram to be drawn.
gregori [183]

Well the diagram would look like the water cycle I think


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What are the answers to this
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i cant even see that no one can i will answer it if u can make it bigger

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