joellundy

05.05.2020 • 

Chemistry

A car is coasting down a big hill. Which statement is true about the energy in this system?

Select one

1. Kinetic energy of the car is equal to its potential energy

2. Kinetic energy of the car must be bigger than potential energy

3. The car has both kinetic and potential energies

4. The car only has kinetic energy

Ответ:

nyce36

25.01.2022

Chemistry

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The car only has kinetic energy because it is moving. Potential energy would be if the car was sitting at the top of a hill.

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Ответ:

aprilreneeclaroxob0c

04.04.2020

Chemistry

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Explanation:

A carbon-12 atom has a mass defect of 0.09564 amu. What is its nuclear binding energy? Round to 3 significant figures. x 10 J per carbon-12 atom

First use the formula;

1 amu =934 MeV

therefore 0.09564 will have

934 x 934

= 89.3 MeV

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