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sweet-ann [11.9K]
3 years ago
15

A reference point is an object or location from which the movement of another object is determined. Which of the following could

be a reference point?
a house
a point on a map
a moving car
a person​
Physics
1 answer:
Kay [80]3 years ago
8 0
A point on a map because it shows your starting point
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both charges are cross multiplied to each element......formula tells us that to balance the positive and negative charges on both sides they are cross multiplied........MgCl2......meaning there is one atom of Mg and 2 atoms of Cl.......

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How does the suns energy contribute to the carbon cycle
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Power selection feature for resistors to become water modules 10 liters of water at 25°C to đến
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Answer:

P = 2439.5 W = 2.439 KW

Explanation:

First, we will find the mass of the water:

Mass = (Density)(Volume)

Mass = m = (1 kg/L)(10 L)

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Now, we will find the energy required to heat the water between given temperature limits:

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Therefore,

E = (10 kg)(4182 J/kg.°C)(70°C)

E = 2.927 x 10⁶ J

Now, the power required will be:

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where,

t = time = (20 min)(60 s/1 min) = 1200 s

Therefore,

P = \frac{2.927\ x\ 10^6\ J}{1200\ s}

<u>P = 2439.5 W = 2.439 KW</u>

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