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spin [16.1K]
3 years ago
9

Please answer this question

Physics
2 answers:
Otrada [13]3 years ago
5 0
Number 3 is b. petrologist
Number 4 is a.metamorphic
Ilya [14]3 years ago
5 0
1.d
3.b
4.a
5.f
hope this helped



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Match each term to its definition.
den301095 [7]
Answer: first one is electrochemical
Second one is combustion
Third one is photosynthesis
Fourth one is respiration
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3 years ago
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An ideal solenoid having a coil density of 5000 turns per meter is 10 cm long and carries a current of 4.0
Diano4ka-milaya [45]
The rule that is used to get the strength of magnetic field at the center of solenoid (B) is:
B = <span>µ x n x I where:
</span>µ is the permeability of the medium where the solenoid is based. In this problem, the medium is air which means that µ = <span>µ </span><span>o = 4 pi x 10^-7 Tm/A
</span>I is the current passing (I = 4 amperes)
n is the number of turns per unit length (5000 turns)

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5 0
3 years ago
3.
ratelena [41]

Answer:

1.84 kJ  (kilojoules)

Explanation:

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If we want to heat 50 g of iron from 20° C to 100° C, we can make the following calculation:

Heat = (specific heat)*(mass)*(temp change)

Heat = (0.46 J/g Cº)*(50g)*(100° C -  20° C)

[Note how the units cancel to yield just Joules]

Heat = 1840 Joules, or 1.84 kJ

[Note that the number is positive:  Energy is added to the system.  If we used cold iron to cool 50g of 100° C water, the temperature change would be (Final - Initial) or (20° C - 100° C).  The number is -1.84 kJ:  the negative means heat was removed from the system (the iron).

8 0
2 years ago
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Romashka [77]
<h2>Answer: free electrons</h2>

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8 0
3 years ago
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Two cars, initially 100 m distant apart, start moving towards each other
choli [55]

Answer: false

Explanation: because if one car is at 2 m/s and the other at 1 m/s one would be farther away from the stating point

6 0
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