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Solnce55 [7]
3 years ago
15

cup of hot chocolate has a spoon in it. How does the heat move from the hot chocolate to the metal spoon handle?

Physics
1 answer:
serg [7]3 years ago
5 0

The heat moves from the hot chocolate to the handle of the spoon by a process called thermal conduction.

It is the transfer of heat energy from one object to another when they are in contact with eachother.

Hope this answers your question.

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A NASA explorer spacecraft with a mass of 1,000 kg takes off in a positive direction from a stationary asteroid. If the velocity
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Answer: 10000 kg

Explanation:

The momentum p is given by the following equation:  

p=m.V (1)  

Where:  

m is the mass of the object  

V is the velocity of the object

Now, in this case and according the conservation of momentum:

m_{1}v_{1}+m_{2}v_{2}=m_{1}u_{1}+m_{2}u_{2}   (2)  

Where:

m_{1}=1000kg is the mass of the spacecraft

m_{2} is the mass of the asteroid

v_{1}=0 is the initial velocity of the spacecraft

v_{2}=0 is the initial velocity of the asteroid (because we are told the asteroid is stationary, as the spacracft is on the sateroid it remains stationary as well)

u_{1}=250m/s is the final velocity of the spacecraft

u_{2}=-25m/s is the final velocity of the asteroid

Rewritting (2):

0=m_{1}u_{1}+m_{2}u_{2}   (3)  

0=(1000kg)(250m/s)+m_{2}(-25m/s)   (4)  

Finding m_{2}:

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3 0
3 years ago
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