Answer:
1. E=5320.3J
2. E= 1773.45J
3. E=6.76*10^{-21}J
4. E=2.25*10^{-21}J
Explanation:
1. the thermal energy is given by the formula

where KB is the Boltzmann's constant, T is the temperature and N is the number of molecules in the system.
2. Each degree of freedom contains one half of the total energy. Hence, the energy for one degree of freedom is

3.

4.

Hope this helps!!
Exercise is the activity and fitness is a lifestyle and done with time
Answer:
The car must move at 2 m/s to have a Ke of 2,000 Joules.
Explanation:
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66 g of element Y is needed since the ratio between element X and element Y is 1:2