HOMEWORK (use separate paper) PHY-252 What is the potential of an ordinary AAA b

Question

HOMEWORK (use separate paper) PHY-252 What is the potential of an ordinary AAA battery? If an AAA battery is connected to a parallel plate capaci apply to each plate? Show your work. 7. or having 4 cm×4 cm plates spaced 1.0 mm apart, how much charge does the battery of an electron that has been accelerated from rest through a potential difference 8. What is the speed of 1000 V? Show your work Ils"pump" singly ionized sodium ions, Na, from the inside of the cell to the outside to must be done to move a positive ion form the negative inside of the cell to the positive 9. rane potential V- re=V.--70 . It is called pumping because maintain a memb outside, and it must go on continuously because sodium ions "leak" back though the cell wall by diffusion. How much work must be done to Show your work. move one sodium ion form the inside of the cell to the outside? a. body uses energy at the rate of approximately 100 W to maintain basic . Estimate the number of sodium ions pumped per second. Show your work meta pumps bolic functi ons. It hasbeen estimated that 20%of this energy is used to operate the sodium of the body

Explanation / Answer

8) Kinetic energy = qV

0 .5mv^2 = qV

0.5*9.11*10^-31*v^2 = 1.6*10^-19*1000

v = 1.87*10^7 m /s

so the speed of electron = 1.87*10^7 m/s

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