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xxMikexx [17]
3 years ago
14

According to the Law of Conservation of Mass, which of the followig is (are)correct?Question 3 options:

Physics
1 answer:
Gennadij [26K]3 years ago
7 0

Answer:

A. Mass cannot be created or destroyed:)

Explanation:

uhhhhh idk what to write here. Hope this helped;))

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The Battle of the Bulge in the winter of 1944 was the last Great German offensive of the Second World War.
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Mercury has one of the lowest specific heats. This fact added to its liquid state at most atmospheric temperatures make it effec
UNO [17]

The specific heat of mercury is 149.4 J/(kgK)

Explanation:

When a substance is supplied with an amount of energy Q, its temperature increases according to the equation:

\Delta T=\frac{Q}{mC_s}

where

\Delta T is the increase in temperature

m is the mass of the sample

C_s is its specific heat capacity

For the sample of mercury in this problem we have

Q = 275 J

m = 0.450 kg

\Delta T = 4.09 K

Therefore, by re-arranging the equation we find the mercury's specific heat:

C_s = \frac{Q}{m\Delta T}=\frac{275}{(0.450)(4.09)}=149.4 J/(kgK)

Learn more about specific heat capacity:

brainly.com/question/3032746

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4 years ago
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3 years ago
Read 2 more answers
A 30kg boxed is pushed with a force of 20N. What is the boxes acceleration. Please show work
kozerog [31]

Answer:

<h3>The answer is 0.67 m/s²</h3>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{20}{30}  =  \frac{2}{3}  \\  = 0.6666666...

We have the final answer as

<h3>0.67 m/s²</h3>

Hope this helps you

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The diagram illustrates the movement of sound waves between an observer and a race car. As the race car drives away from the obs
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