PHYSICS HIGH SCHOOL

Explain the difference between the following three substances: carbon c. , carbon dioxide (CO2), and oxygen (O2)

Answers

Answer 1
Answer: Carbon and oxygen are diatomic atoms. Carbon is made up of two elements.
Answer 2
Answer:

Answer:

Carbon and oxygen are diatomic atoms. Carbon is made up of two elements.

Explanation:

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Which statements accurately describe matter

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I hope it is helpful for you ...

Explain why the current is reduced as electrons move through a conductor.

Answers

The current is reduced as less energy is available to move electrons through the wire.


This is because electrons moving through the conducting substance collide with the electrons and ions.


This causes collisions which further more convert kinetic energy into thermal energy because of the fewer energy that is available, it reduces.


Moreover the resistivity factor of the conductor it self might play some role and the loss of energy too.
as current moves through the conductor; the resistance of the conductor causes the original amount of current to reduce do to the length and the cross section size of the wire.

All of the following are electromagnetic waves excepta. X rays.
b. sound waves.
c. gamma rays.
d. radio waves.

Answers

Sound waves are longitudinal waves. All are the examples of Electromagnetic waves except the sound wave.

EM Waves:

EM waves are transverse waves means the propagation of the wave is the perpendicular the the wave oscillation.

Sound waves:

These are the longitudinal waves because the propagation of the wave is parallel to the vibration of particles.

  • It needs medium like air and water.
  • Its speed is very lesser than speed of EM wave.

Therefore, all are the examples of Electromagnetic waves except the sound wave.

To know more about sound wave,

brainly.com/question/21995826
b. sound waves
Sound waves need to travel through a medium such as a solid, liquid, or gas. The sound waves move through each of these mediums by vibrating the molecules in the matter. This means it isn't an electromagnetic waves but it is a wave, an example of the difference, all electromagnetic waves can travel in a vacuum at the universal speed limit, this is 299 792 458 m/s.

Use Newton’s First Law of Motion and the concept of inertia to explain what happens to a person in a head-on car accident who is not wearing a seat belt. How does wearing a seat belt help?

Answers

According to Newtons first law of motion, a passenger tends to continue in the state of uniform motion even after the accident which causes the passenger to move forward.

According to the Newtons first law of motion, an object will continue in a state of rest or uniform motion unless it is acted upon by an external force. This is also known as the law of inertia.

While in a car undergoing uniform motion and suddenly the car is involved in an accident which causes the vehicle stop abruptly, a person suddenly moves forward because of the tendency to continue in the former state of uniform motion according to Newtons first law.

A seat belt helps to prevent the person from suddenly moving forward in a way that may lead to injury as a result of the accident.

Learn more: brainly.com/question/974124

Answer:

Newtons first law of motion explains what happens in a car crash because it basically states that the passenger will continue to travel at the same velocity until an unbalanced force acts on he or she. The force that will act upon he or she would be the window, so you should always wear a seat belt!

Explanation:

A woman with a genotype of Cc marries a man with a genotype of Cc. What is the probability that their offspring will have a chin with no cleft?

Answers

This may help if you know which alleles are dominant and recessive. 

An ocean-going barge is 50.0 m long and 20.0 m wide and has a mass of 145 metric ton. Will the barge clear a reef 1.50 m below the surface of the water?

Answers

Since its mass is 145 metric tons, the barge must displace 145 metric tons of water
in order to float. 145 metric tons= 145,000 kilograms.  Use the rough-but-close rule
of thumb that 1 liter of water has 1 kilogram of mass. So the barge displaces 145,000
liters, which is also 145 cubic meters of water.

(Length) x (width) x (depth of the part under water) = 145 cubic meters

Draft of the barge (depth under water) = 145 / (50 x 20) = 145/70 = 2.07 meters.

No, it will not clear the reef 1.5 meters below the surface.  Either the barge will shave off the top 0.57 meter of the reef, or else the reef will do serious damage to the barge. In any case, there will be a situation.

 
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