After learning about climate change in her science class, Selena wants to make a few changes at home so she can affect climate c hange in a small way. Which changes will give her the best results? A. Switch off appliances that are not in use.
B. Study harder for school tests.
C. Eat more nutritious foods.
D. Recycle used books and magazines.
E. Assist her father with household chores.
2 answers:
Answer:
The correct option are A and D.
Explanation:
A. Switch off appliances that are not in use.
D.Recycle used books and magazines;
This is because of following reasons:
Switching of the appliances when not in use will save the electrical energy from wastage. As it will also indirectly save other useful resources from which this electrical energy is generated. With less use of energy she will also able to save money. By recycling books and magazines she able to reduce paper wastage. She will be able to create more clean and green environment. By recycling books and magazines she will be able to save trees from cutting down from which paper is manufactured.
A. Switch off appliances that are not in use
D. Recycle used books and magazines
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Answer:
50W
Explanation:
The formula and is
W = F × s
(force x distance)
W= 50 N× 5 m =250 N m=250 J
Done in 5 seconds the power is
p
=
W
t
where
t
=time
p
=
250
J
5
=
50 J
/s
=50 W
Convert all the gases from grams to moles using their molar masses first. Remember that nitrogen and oxygen exist as DIATOMIC gases. O2 - 25 g / 32 g/mol = 0.78 mol O2 N2 - 15 g / 28.02 g/mol = 0.54 mol N2 He - 10 g / 4.0 g/mol = 2.5 mol He Add all the moles of gases. 0.78 + 0.54 + 2.5 = 3.82 moles Divide O2 moles by total moles. 0.78/3.82 = 0.20
Answer:
solid
Explanation:
When a solid is melted, for example, thermal energy is what causes the bonds within the solid to break apart.
C. Because both reactants and products continue to form.
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