The factors that influence the balance of Earth's incoming and outgoing radiation are called "radiative forcings." These forcings can include natural factors like volcanic eruptions and solar variations, as well as human activities such as greenhouse gas emissions.
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The speed of sound varies in different mediums. In Physics, the speed of sound in air at 0°C is about 331.5 m/s, while in iron it's about 5130 m/s. If a train is 100 km away, the sound travelling through the iron rails would reach you approximately 282 seconds sooner than the sound through the air.
In Physics, the speed at which sound travels depends on the medium through which it's travelling. The speed of sound in air at 0°C is approximately 331.5 m/s. On the other hand, the speed of sound in iron is about 5130 m/s.
To determine how much sooner you would hear the train, we need to calculate the difference in time it takes for the sound to travel through these two mediums.
When the train is 100 km away, we get the following:
The difference is, therefore, approximately: 301.66 - 19.49 = 282.17 seconds. Thus, the sound will reach you 282 seconds sooner if you listen to the rails rather than the air.
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Importanceofozonelayer:
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.
Answer:
23.5 N
Explanation:
Just wanted to clarify something about the verified answer: Our only given measurement—the mass of the object—has 3 significant digits, so we can only include 3 significant digits in our answer.
23.52 N is NOT the correct answer. Your answer should only have 3 significant digits.
I just did the quiz where this problem came from, so I know that 23.5 N is the correct answer.
Answer : The correct option is, (B) neutron
Explanation :
As we know that the atomic number of helium atom is 2. That means it has 2 number protons, 2 number of electrons and 2 number of neutrons.
There are three subatomic particles. Protons, neutrons and electrons. The subatomic particle proton which is positively charged and neutron which is neutral are located in the center of the nucleus and the subatomic particle electrons which is negatively charged are located outside the nucleus.
In Bhor atomic of the helium atom,
The letter X represent the electrons.
The letter Y represent the neutrons.
The letter Z represent the protons.
The letter W represent the nucleus.
Hence, the correct option is, (B) neutrons.
The Answer that your looking for is NEUTRON
hope this helps you :)