Question

1
ReviewI Constants Periodic Table Part A A NaT ion moves from inside a cell, where the electric potential is -70 mV, to outside the cell, where the potential is 0 V What is the change in the ion's electric potential energy as it moves from inside to outside the cell? Express your answer using two significant figures. ufido redo resêt keyboard shortcuts help Uele 1.1.10-20 eV Submit Previous Answers Request Answer x Incorrect; Try Again; 3 attempts remaining Part B Complete previous part(s)
23

Answer 1

Only one question can be posted as per HOMEWORKLIB RULES

1.

1 mV=10^-3 V

Change in Ion's Potential energy

$\Delta U_{elec}=q\Delta V =e\left ( 0-(-70\times 10^{-3}) \right )=0.07 eV$

2.

a)

Answers are

• the distance between the positive charge and the electron
• the charge of the positive charge
• The charge on the electron

Since electric field is given by

E=KQ/r²

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To find acceleration ,electric field is required to find acceleration .Here full question not provided

The magnitude of acceleration is

a=|q|E/m

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3.

a)

V=sqrt[23²+35²] =41.88 m/s

b)

o=tan^-1(35/23) =56.69^o=56.7^o

c)

a=sqrt[4.5²+(-6.5)²] =7.91 m/s²

d)

o=tan^-1(-6.5/4.5) =-55.3^o

o=55.3^o below +x-axis