Physics and Astronomy Labs/Upcoming Test (a)

For the next Astronomy test on March 18, 2015
Questions not on this list will be on the next astronomy test

March 18 lab portion
{If an electron's charge equals 2 in some units, and if r is the number of electrons per second, then the the current, I, equals} + I=2r - I=(1/2)r - I=4r - I=r

{If an electron's charge equals 1/2 in some units, and if r is the number of electrons per second, then the the current, I, equals} + I=(1/2)r - I=2r - I=4r - I=r

{In the gravitational analogy to electrostatics and electricity, what is the analog to charge? (Here, m is mass, h is height, and g is gravitational acceleration. Also, the formula for gravitational potential energy is mgh)} + m - mg - mgh - gh

{If the breakdown field for air is typically 60kv/inch (i.e. 60,000 volts per inch). What does that say about the voltage associated with a two inch spark?} + 120 kV - 60 kV - 30 kV - 240 kV

{If the breakdown field for air is typically 60kv/inch (i.e. 60,000 volts per inch). What does that say about the electric field associated with a two inch spark?} - 120 kV/inch + 60 kV/inch - 30 kV/inch - 240 kV/inch

group 1
{The units for qV=energy} - energy + Joule/Coloumb - Joules - Coloumb

{If an electron's charge equals 2 in some units, and if r is the number of electrons per second, then the the current, I, equals} + I=2r - I=(1/2)r - I=4r - I=r

{If an electron's charge equals 1/2 in some units, and if r is the number of electrons per second, then the the current, I, equals} + I=(1/2)r - I=2r - I=4r - I=r

{In the gravitational analogy to electrostatics and electricity, what is the analog to charge? (Here, m is mass, h is height, and g is gravitational acceleration. Also, the formula for gravitational potential energy is mgh)} + m - mg - mgh - gh

Group 2
{Voltage is expressed as?} + energy/q - q/energy - I/gh - gh/q

{Is current equal to the number of electrons per second flowing through a wire?} + only in units where the charge of the electron equals one - yes - no - only in units where the charge of the electron equals the potential energy of a mouse

{In the gravitational analogy to electrostatics and electricity, what is analogous to voltage? (Here, m       is mass, h is height, and g is gravitational acceleration.} - m - mg - mgh + gh

{question?} + yes - wrong - wrong - wrong

{question?} + yes - wrong - wrong - wrong