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4 years ago

How does conduction occur?

1 answer:

4 0

In the case of metal, it comtains delocalised electrons which can move freely throughout the metal. when heat is applied to one end of the metal, the atoms and delocalised electrons gain more kinetic energy and move faster and they hit the neighbouring atoms more and heat is transfer theoughout the matal through conduction.

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Calculate the speed of an 8.0*10^4kg airliner with a kinetic energy of 1.1*10^9J.

Burka [1]

Answer:

The velocity will be v = 165.83[m/s]

Explanation:

This is a problem where the definition of kinetic energy can be applied, which can be determined with the following equation.

$E_{k}=\frac{1}{2}*m*v^{2}\\ where:\\m = mass = 80000[kg]\\v = velocity [m/s]\\E_{k}= kinetic energy [J]=1100000000[J]\\Replacing:\\v=\sqrt{\frac{2*E_{k} }{m} } \\v=\sqrt{\frac{2*1100000000 }{80000} }\\v=165.83[m/s]$

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3 years ago

Which single force acts on an object in free fall

ICE Princess25 [194]

Answer:

gravity

Explanation:

4 0

3 years ago

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What is a moon node? have a great day

RideAnS [48]

Answer:

lunar node in other words is either of the two orbital nodes of the Moon, that is, the two points at which the orbit of the Moon intersects the ecliptic. The ascending node is where the Moon moves into the northern ecliptic hemisphere, while the descending node is where the Moon enters the southern ecliptic hemisphere

3 0

3 years ago

Read 2 more answers

Will give 30 point!!!!

JulijaS [17]

Answer:

Explanation:

This is because it is a liquid

7 0

3 years ago

How much will the top five winners of nasa’s design contest win?

sashaice [31]

Answer:

$\$100,000$

Explanation:

The top 5 winners of NASA's design contest winner received amount of $\$100,000$ (Dollar One hundred thousand). The respected amount was divided into 5 parts as there were 5 winners as well.

So, the amount was divided among the winners are as follows:

Winner 1 ⇒ $\$20,957.95$

Winner 2 ⇒ $\$20,957.24$

Winner 3 ⇒ $\$20,622.74$

Winner 4 ⇒ $\$19,580.97$

Winner 5 ⇒ $\$17,881.10$

Hence by adding all of the 5, we will get the answer, which is $\$100,000$ .

4 0

3 years ago