Powers of 10 For each of the following the power of 10 in standard form.
1. 102
2. 105
3. 10-3
4. 101
5. 1010
6. 100
7. 10-2
8. 10-8
9. 104
10.10-1
For each of the following write the number as a power of 10.
1. 1000
2. 10
3. 0.1
4. 10000000
5.1
6. 100
7. 0.00001
8. 0.001
9. 10000
10. 0.000000001

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answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.