Answer:
6.9.
Explanation:
In case of product of two physical quantities with errors , the rule is that the product will contain error equal to the sum of percentage errors of the two physical quantities. Foe example P contains 2% error and Q contains 3% error then P X Q will contain 2 +3 = 5 % error.
(21 ± 1.14 %) x (14±1.9%)
Total percentage error in the result of product
1.14 + 1.19 = 2.33 %.
Produce value = 21 x 14 = 294
percent of error in it = 2.33%
value of error
= 2.33% of 294
= 6.8502 or 6.9.
There would be more - charges on the peanuts because they gain electrons which are represented with the - sign. There would also be more + on the cat to show that the cat’s fur is positively charged. The peanuts would be attracted to the cat because opposite charges attract.
As for explaining the first model, there should be the same amount of + and - charges on the peanuts as well as the cat to show that it is balanced and the peanuts are not attracted or repelled by the cat.
I’m pretty sure you would measure from crest to crest so A and B
1. research scientist
2. professor
3. physics teacher
4. data scientist
5. lab manager
6. medical physicist
7. optical engineer
8. aerospace engineer
9. geophysicist
10. astronomer