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Leya [2.2K]
3 years ago
9

Which of the following methods of improving air quality does not require advanced technology?

Physics
1 answer:
Kisachek [45]3 years ago
3 0
Conservation is a method of improving air quality
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what happens to the current in a circuit if a 1.5 volt battery is removed and is placed by a 9 volt battery?
juin [17]

Answer:

The current would increase.

Explanation:

The current would increase. 10. The relationship between resistance and current in a circuit is that the greater the resistance the less the current and the greater the current the less the resistance is.

8 0
3 years ago
I'm stuck on question 3. Could anyone please explain it?
sergiy2304 [10]
Peak voltage is 2
period is 40ms
frequency = 1/period = 25Hz
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3 years ago
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Answer:

ok

Explanation:

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4 0
2 years ago
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The kinetic energy of a moving object is E=12mv2. A 61 kg runner is moving at 10kmh. However, her speedometer is only accurate t
jek_recluse [69]

Answer:

e=3367.2J

%e=1.43%

Explanation:

From the exercise we know two information. The real speed and the experimental measured by the speedometer

v_{r}=10km/h=2.77m/s

Since the speedometer is only accurate to within 0.1km/h the experimental speed is

v_{e}=10km/h-0.1km/h=9.9km/h=2.75m/s

Knowing that we can calculate Kinetic energy for the real and experimental speed

E_{r}=\frac{1}{2}mv^2=\frac{1}{2}(61000g)(2.77m/s)^2=234023J

E_{e}=\frac{1}{2}mv^2=\frac{1}{2}(61000g)(2.75m/s)^2=230656J

Now, the potential error in her calculated kinetic energy is:

e=E_{r}-E_{e}=(234023-230656)J=3367.2J

%e=\frac{E_{r}-E_{e}}{E_{r}}x100=\frac{(234023-230656)J}{234023J}x100=1.43%

4 0
3 years ago
1.How long dose long term alcohol abuse affect the liver ?
Agata [3.3K]
1. B- it can cause cirrhosis
2. C- intoxication
3. A- admit to having a problem with alcohol
4. D- binge-drinking
5. A- depressant
6. true
7. false
7 0
3 years ago
Read 2 more answers
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