PHYSICS MIDDLE SCHOOL

If an oxygen has 8 protons in its nucleus what is its atomic number A.6 B.8 C.4 D.12

Answers

Answer 1
Answer: The atomic number = the number of protons. 

8 = atomic number
Answer 2
Answer:

Answer is 8 !

~Sarah Robinsen

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How many squares for three traits?

Answers

you just need one square but with 16 little boxes 
list out all the possible combination for each set of traits 
add then to the each side of the box and match them up 

Why did pangea break up ?

Answers

Because the gravitational pull from the ocean i believe
Pangea was fully assembled by the Early Permian Period, some 270 million years ago. It began to break apart about 200 million years ago, during the Early Jurassic Period, eventually forming the modern continents and the Atlantic and Indian Oceans.

Nuclei of uranium atoms split apart is___?

Answers

Nuclei of uranium atoms split apart is . . . . known as nuclear fission

What kind of levers are your arms and legs

Answers

Answer:

Legs are the 2nd class lever.

Arms are the 3rd class lever.

Explanation:

A lever is an inflexible body fit for turning on a point on itself. There are three types of lever

1) 1st class lever:  (pivot is in the center of load and effort)

In the human body are uncommon. One model is the joint between the head and the principal vertebra                    

2) 2nd class lever: (load is in the center of pivot and effort)

In the human body, the 2nd class lever is found in the lower leg when somebody remains on tiptoes.

3) 3rd class lever: (The load is far from the pivot than the effort.)

In the human body; one model can be delineated in the elbow joint

A car speeds up from 12.0 m/s to 16.0 m/s in 8.0 s. the acceleration of the car is?

Answers

Vi=12m/s Vf=16m/s t=8s a=? a=Vf-Vi/t=16-12/8=4/8=1/2 a=0.5m/s^2

According to sig figs, the answer should be 0.500 m/s^2!

This is a spreading out of a wave around corners or through holes.

Answers

Answer:

Diffraction.

Explanation:

Diffraction is the bending and scattering of a wave as it hits an object or goes through an opening.

Answer:

Diffraction

Explanation:?
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