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muminat
3 years ago
12

Help with question b

Physics
1 answer:
givi [52]3 years ago
6 0

Answer:

hgvugvuhvjhvjhvkjbijbuobojbljbokboknokniuboublnoknoijopjlknoknoibiobokb

Explanation:

h

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Field lines point straight out from all sides of an object. Which statement best describes the object?
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It is positively charged.
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3 years ago
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An iron nail is driven into a block of ice by a single blow of a hammer. The hammerhead has a mass of 0.5 kg and an initial spee
larisa [96]

Answer:

The ice melts mass is:

m_g=7.6x10^{-3} g

Explanation:

Kinetic Energy  

K_E = 1/2*m*v^2

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K_E=2.56 kg*m^2/s^2

Heat gained by ice= mass(g) x 80 cal

( 1 cal = 4.184 *10^7er or g cm^2/ sec^2)

Assuming no loss in heat,  in the motion so both continue with temperature 0~C

To find so the mass (gm) of ice melted

m_g= 1/2 *(0.5*1000)*(3.2m/s)^2* 100*100 / (80*4.184*10^7)

m_g=7.6x10^{-3} g

5 0
3 years ago
What are the two ost important processes in the oxygen in and out of the atmospher
BaLLatris [955]
Decomposing - When plants and animals die, they decompose. This process uses up oxygen and releases carbon dioxide. Rusting - This is also called oxidation. When things rust they use up oxygen.
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The opposite poles of two magnets will do which of the following
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To what i see, the answer is....

C.

6 0
3 years ago
1- What the relation ship between temperature and density of liquids?
defon

Answer:

Explanation:

1- Density increase as the temperature decreases. This is the reason why liquid water is more dense than solid water.

2- The only things that affect the period of a simple pendulum are its length and the acceleration due to gravity.

3- not really sure for that one...I will think about that.

4- same reason for number 3

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3 years ago
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