PHYSICS MIDDLE SCHOOL

FILL IN THE BLANKS!1. Thermal energy moves more quickly through _____ than it does through ______.

2. _____ is the transfer of thermal energy due to collisions between particles of matter.

A. Conductors
B. Expansion
C. Heat
D. Insulators
E. Temperature

Answers

Answer 1
Answer: 1. First blank is A. Conductors
Second blank is D. Insulators

2. C. Heat

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The reason why the shapes of the continents as of today do not perfectly fi into to super continent because long time ago the super continent was scattered into pieces. And as times go by, those smaller parts of super continents undergo soil erosion caused by the water and other way that causes their original shapes change.  
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Answers

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Hope that helped =)
The answer in sunspot.

I have an object that I want to know when it was made. I calculate that the object contains 0.12g of Iodine-131 but started with 60g. How old is my object?

Answers

Answer: 71.72 days

Explanation:

This problem can be solved using the Radioactive Half Life Formula:

A=A_(o).2^{(-t)/(h)}(1)  

Where:  

A=0.12 g is the final amount of Iodine-131

A_(o)=60 g is the initial amount of Iodine-131

t is the time elapsed  

h=8 days is the half life of Iodine-131

Knowing this, let's substitute the values and find t from (1):

0.12 g=(60 g)2^{(-t)/(8 days)}(2)  

(0.12 g)/(60g)=2^{(-t)/(8 days)}(3)  

Applying natural logarithm in both sides:

ln((0.12 g)/(60g))=ln(2^{(-t)/(8 days)})(4)  

-6.21=-(t)/(8 days)ln(2)(5)

Finding t:

t=71.72 days

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Answers

nuclear energy because it holds atoms together.
Atomic Energy or Nuclear Energy

How do whales bats and dolphins use echolocation?A To scare away predators
B To attract mates
C To orient them selves and find food
D To tell animals of there species where they are

Answers

C is your answer ithink
I think ur answer is c

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Answers

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