GPE= height x mass x gravitational field strength
5 x 10 x 9,8=490J
Answer : The excess of electrons on the penny are, 
electrons
Solution : Given,
Total charge = 
Charge on electron = 
Formula used :
Now put all the given values in this formula, we get the excess of electrons present on the penny.
Therefore, the excess of electrons on the penny are, electrons
f(3) represents the number of additional square feet the construction crew has paved after 3 hours, not including the initial paved amount.
Mathematical models are representations of real situations. Models often serve the purpose of prediction and can help to explain and simplify certain mathematical problems.
The model; f(x) = 300x + 1,000 represents the number of additional square feet that can be paved in an hour after 1,000 square feet has already been paved.
From the above we can see that the correct answer is; "900 square feet; f(3) represents the number of additional square feet the construction crew has paved after 3 hours, not including the initial paved amount."
Learn more: brainly.com/question/731147
Answer: 1.62m/s^2
Explanation: Using V^2=U^2+2a*s
V=9.2m/s, U=0, d = 26.2m
V^2=2a*s
a = V^2/2s
a = 9.2^2/2*26.2
a = 1.62m/s^2
