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taurus [48]
3 years ago
5

Which of the following is a problem that some people blame on technology?

Physics
2 answers:
AnnZ [28]3 years ago
8 0

Answer:

B. widespread pollution

Explanation:

Some people blames technology for widespread pollution.

Pollution is the release of toxic or harmful substances to the earth which is poisonous to human health and harmful to the environment.  These substances when they are released to the environment it causes damage to our environment . Poisonous substance can be solid, liquid or even gaseous.

Advancement in technology like in our transportation system have cause pollution. Previously humans uses animals for transportation. But the advancement in technology have introduce faster transport method like vehicles and train that move on land , planes that moves in air and ships that moves in the sea. Toxic fumes that are harmful to the environment and humans are released because of these advancement in technology. Vehicles releases green house gases like carbon dioxide , Nitrous oxide etc that pollutes the environment.

seropon [69]3 years ago
7 0
The correct answer is B, widespread pollution. If you look closely, you can see that the other answers are not problems at all, but benefits! :)
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As the temperature rises the solubility of all gases in water will _________
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Answer:

Decreases.

Explanation:

The rise in temperature of gas increases the kinetic energy of its molecules and they rush out of water instead of dissolving similarly as air rushes out of boiling water in form of bubbles

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3 years ago
1. Say whether the following statements are true or false and explain why:
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Explanation:

A] TRUE

B] TRUE

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3 years ago
A heat pump is to be used for heating a house in winter. The house is to be maintained at 70°F at all times. When the temperatur
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Answer:

\dot{W_{H} } = 4244.48 Btu/h

Explanation:

Temperature of the house, T_{H} = 70^{0} F

Convert to rankine, T_{H} = 70^{0}+ 460 = 530 R

Heat is extracted at 40°F i.e T_{L} = 40^{0}F  = 40 + 460 = 500 R

Calculate the coefficient of performance of the heat pump, COP

COP = \frac{T_{H} }{T_{H} - T_{L}  } \\COP = \frac{530 }{530 - 500  }\\ COP = \frac{530}{30} \\COP = 17.67

The minimum power required to run the heat pump is given by the formula:

\dot{W_{H} } = \frac{\dot{Q_{H} }}{COP} \\...............(*)

Where the heat losses from the house, \dot{Q_{H} } = 75,000 Btu/h

Substituting these values into * above

\dot{W_{H} } = \frac{75000}{17.67} \\ \dot{W_{H} } = 4244.48 Btu/h

3 0
2 years ago
A wave with a high frequency generally has a _____.
il63 [147K]
High frequency = D, short wavelength
4 0
2 years ago
A car takes 15 minutes to travel along a road that is 20 km long.
iogann1982 [59]

Answer:

C

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x4. x4

60. 80

80km/h

8 0
3 years ago
Read 2 more answers
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