The ozone layer _____. is part of the troposphere
is used to send radio signals
protects the earth from UV radiation
is made of charged ions and free electrons
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Related Questions
If you push on a wall with a force of 200n with what force does the wall push back
Why are there so few working wave power stations?
Visible light is an example of?
1. What causes tides?A. The energy generated by waves. B. The changes in Earth's climate. C. The gravitational pull of the Sun on Earth's oceans. D. The gravitational pull of the Moon on Earth's oceans.
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The power of an object is the rate of work done or energy. Here, the energy used by the hair dryer is 72000 Joules. Hence, the power used by the dryer is 1200 watt.
What is power ?
The power of an object is a physical quantity that, measures the rate of the work done by the object or the energy used by the object. The energy used is equal to the work done by it. Hence both have the same standard unit of joule.
Power is the work done or energy divided by time. Hence, the unit of power is J/s which is equivalent to watt.
hence power = work done or energy / time
Given the energy used by the hair dryer = 72000 Joules
time = 60 seconds.
then, power = 72000 J/60 s = 1200 watt.
Therefore, the power used by the dryer is 1200 watt.
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Answer:
1200 Watts is the answer
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Answer:
D. A negative externality.
Explanation:
Particulate pollution is a form of pollution that is responsible for the degradation of the environment.
Particulate matter is also referred to as particle pollution or atmospheric aerosol particles and it can be defined as a complex microscopic mixture of liquid droplets and solid particles that are suspended in air.
An externality is typically an unwarranted cost or benefit by a manufacturer or producer of goods and services that affects a third party.
In Economics, an externality could either be positive or negative depending on its effect on a third party.
A negative externality arises when the production or consumption of a finished product or service has negative impact (cost) on a third party.
In conclusion, air pollution is an example of a negative externality because it causes harm to a third party.
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Its not a because Only coral and produce
Its not C because not all eat plants, some may eat meat like great white sharks
Its not D because not all of them are carnivores
It is B) Consumers because they all will consume *eat* another organism.
*plus im in k12- usatestprep, so i know*
0.045=n *1.6*10^-19
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0.045=n*1.6*10^-19
divide both sides by 1.6
0.028125=n*10^-19
divide both sides by 10^-19
0.028125*10^19=n
2.8125*10^17=n
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Answer:
An infinite temperature
Explanation:
The efficiency of an engine is defined as:
where
is the temperature at which heat enters the engine
is the temperature of the environment, to which the engine exhausts heat
From the formula, we see that for an engine to be 100% efficient, the fraction
must be equal to zero. Since the value of is never zero (the temperature is expressed in Kelvin, and the temperature of the environment can never be exactly 0 K), the only possibility for that to occur is that the temperature at which heat enters the engine (
) is infinite, so that this fraction becomes zero and the efficiency becomes 1.