quick physics question

[neonerd]

The electric field in the atmosphere is about 150 N/C downward

a. What is the direction of the force on positive test charge?
b. Find the force on a proton.
c. Compare the force found in part b with the weight of a proton (yes, you will have to look up the mass of a proton)

Mass of a proton = 1.67262158 × 10-27

we just started this today, and I'm a bit confused with this problem...how would I go about answering this?
for a., would it be downward as well?

 

[MrLuckyPants]

Originally posted by: neonerd
The electric field in the atmosphere is about 150 N/C downward

a. What is the direction of the force on positive test charge?
b. Find the force on a proton.
c. Compare the force found in part b with the weight of a proton (yes, you will have to look up the mass of a proton)

Mass of a proton = 1.67262158 × 10-27

we just started this today, and I'm a bit confused with this problem...how would I go about answering this?
for a., would it be downward as well?

*snore* ...uhhh, 1492? Carbon? The Battle of Hastings?

 

[virtueixi]

You understand what N/C is right?

 

[Heisenberg]

Force = charge * electric field

 

[neonerd]

Originally posted by: virtueixi
You understand what N/C is right?

yeah, it's the electric field

E = F/q

 

[neonerd]

Originally posted by: Heisenberg
Force = charge * electric field

ah, and charge would be 1.6*10^-19 right?

 

[Heisenberg]

Originally posted by: neonerd

Originally posted by: Heisenberg
Force = charge * electric field

ah, and charge would be 1.6*10^-19 right?

Yep. Same magnitude as the electron, but positive.

 

[virtueixi]

Originally posted by: neonerd

Originally posted by: virtueixi
You understand what N/C is right?

yeah, it's the electric field

E = F/q

C stands for coloumbs, which is the charge on the proton.

Edit: yup thats right.

 

[rezinn]

Why can't you just look in your physics book? I doubt many people remember this stuff, and I'd trust a book more anyhow.

 

[jai6638]

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