PHYSICS HIGH SCHOOL

One degree Celsius indicates the same temperature change as?A. One degree Fahrenheit
B. 5/9 degree Fahrenheit
C. One Kelvin
D. 9/5 Kelvin

Answers

Answer 1
Answer: If you've ever seen the formula from Celsius to Fahrenheit...

C=\frac59(F-32)

As you can see, if you put in some number of Celsuis C your answer is going to be multiplied by 5/9...meaning that 1°C = 5/9°F.

As for Kelvin, it's literally just Celsuis, but about 273.15° more.

B. 5/9°F

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What causes resistance in an electrical current

Answers

An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.

What are density conversions

Answers

\rho= (kg)/(m^3) = (g)/(cm^3) = (g)/(dm^3) \ and \ many \ others.

What did the protoplanets become?a. nebulae
b. planets
c. solar nebulae
d. planetesimals

Answers

What did the protoplanets become?

a. nebulae
b. planets
c. solar nebulae
d. planetesimals

The protoplanets become nebulae. The answer is letter A. The rest of the choices do not answer the question above.

The answer is B. Planets

A driver's car overheats. He hypothesizes that a broken fan belt has caused this problem. Which discovery is MOST likely to cause him to revise his hypothesis? a. reduction in outdoor temperature b. an intact fan belt c. a temperature warning light d. a crack in the radiator

Answers

B. An intact fan belt

A 10,000-watt radio station transmits at 535 kHz.Determine the number of joules transmitted per second.

Answers

Answer:

Energy is 10,000 Joules.

Explanation:

It is given that, a 10,000 watt radio station transmits at 535 kHz. We have to write the number of joules transmitted per second.

We know that number of joules transmitted per second is called the power. Its SI unit is watts. Mathematically, the power of radio station is given by :

P=(W)/(t)

Where

W is the work done by radio station

t is the time taken.

According to relation :

1\ watt==(1\ Joule)/(1\ seconds)

So, 10,000\ watt==(10,000\ Joule)/(1\ seconds)

Hence, energy per second is 10,000 Joules.

If you are given a 10,000-watt radio station transmits at 535 kHz, then you just divide one by 535,000 Hz which is equal to 1.87 x 10^-6 seconds. Multiply this value by 10,000W and you get 0.019 Joules.

What is the importance of the ozone layer?

Answers

Importanceofozonelayer:

  • The ozone shields the surface of the earth from ultraviolet UV radiation from the sun.
  • These radiations are highly damaging as they can cause cancer in both plants and animals, damage to eyes and immune system.
  • They can also lead to variations in global rainfall, ecological disturbances and dwingling of global food suppliers.

Explanation:

Formationofozonelayer:ozone at the higher level of the atmosphere is a product of UV radiations acting on oxygen O2 molecule. The higher energy UV radiations split apart some molecular oxygen( O2) into free oxygen (O) atoms.

Depletionodozonelayer:The amount of ozone in the atmosphere began to drop sharply in the 1980's . This decrease has been linked to synthetic chemicals like cholorofluorocarbons ( CFC's ) which are used as refrigerants and in fire extinguishers.

to protect us from the harmful UV rays from the sun so we don't become human bacon
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