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anastassius [24]
3 years ago
14

I put +40 points!!!

Physics
2 answers:
ZanzabumX [31]3 years ago
6 0

oooooooooooooooo00000000p

Aleonysh [2.5K]3 years ago
5 0

Answer:We can solve this using the Law of Conservation of Momentum. If both marbles are in our system, the initial momentum should equal the final momentum.

The initial momentum can be solved for as so:

*  +  =

(0.06)(0.7) + (0.03)(0) = 0.042 [kg * m/s]

So if the system has an initial momentum of 0.042, it should have the same final momentum.

(0.06)(-0.2) + (0.03)() = 0.042

(0.03)() = 0.54

() = 18 [m/s]

Explanation:

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The first choice on the list is the correct one.

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Wonder Woman uses 2,000 N to lift a truck 2.3 meters in 5 seconds. How much power did she use?
tino4ka555 [31]

Answer:

she used alot

Explanation:

she would need to be very powerful if she coukd do that.. but then again its wonder woman.

(srry just so detail )

but

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w=?

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3 years ago
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Answer:

60°C

Explanation:

The dish starts at 110°C and goes down to 50°C

This is the term : 110°C - 50°C

Since 110-50=60, the answer is 60°C

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Extra:

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8 0
3 years ago
Read 2 more answers
The half-life of cobalt is 5.26 years. If 10 grams are left after 15.78 years, how many grams were in the original sample?​
Fiesta28 [93]
<h2>Answer: 80 grams</h2>

Explanation:

This problem can be solved using the <u>Radioactive Half Life Formula</u>:

A=A_{o}.2^{\frac{-t}{h}}   (1)

Where:

A=10g is the final amount of the material

A_{o} is the initial amount of the material (the quantity we are asked to find)

t=15.78y is the time elapsed

h=5.26y is the half life  of cobalt

Knowing this, let's find A_{o} from (1):

A_{o}=\frac{A}{2^{\frac{-t}{h}}}  

A_{o}=A.2^{-\frac{-t}{h}}  

This is the same as:

A_{o}=A.2^{\frac{t}{h}}   (2)

A_{o}=(10g)(2)^{\frac{15.78y}{5.26y}}  

A_{o}=(10g)(2)^{3}  

<u>Finally:</u>

<u></u>

A_{o}=80g>>> This is the amount of grams in the original sample

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Han emperors made ________ the official belief system of the state

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