Answer:
Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. The chief culprit is fossil fuel combustion, which releases nitric oxides into the air that combine with other elements to form smog and acid rain.
The only statement on the options that says true about density is:> The density of an object determines whether it will sink or float.
Why?Density is a physical property of an object.
Density is not derived as a unit of measure. It is derived from 2 fundamental units: kg and m.
The Density of an object is not constant.
Density is calculated by dividing the mass by the volume of an object.
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The density of an object is constant.
Density is a derived unit of measure
The density of an object determines whether it will sink or float.
Answer:
1400 m
Explanation:
Given:
v₀ = 175 m/s
v = 105 m/s
t = 10.0 s
Find: Δx
Δx = ½ (v + v₀) t
Δx = ½ (105 m/s + 175 m/s) (10.0 s)
Δx = 1400 m
Low-energy light bulbs also save money in the long run.
<h3>Mathematical operations</h3>
Cost of 1 low-energy bulb = 400 P
Cost of 1 filament buld = 50 P
Cost of electricity for 1 hour for low-energy bulbs = 0.2 p
Cost of electricity for 1 hour for filament bulb = 1.0 p
Total cost of electricity for 10,000 hours for low-energy bulb:
10,000 x 0.2 p = 2,000 p
Total cost of electricity for 10,000 hours for filament bulb:
10,000 x 1.0 = 10,000 p
Total cost of low-energy bulb + electricity = 2,000 + 400
= 2,400 p
Total cost of filament bulb + electricity = 10,000 + 50
= 10, 050 p
Thus, low-energy bulbs may have an initial higher cost, but they save a significant amount of money in the long run.
More on energy-saving bulbs can be found here:brainly.com/question/13144449
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