Help with physics please I have an exam tomorrow and we were given a practice ex

Question

Help with physics please

I have an exam tomorrow and we were given a practice exam without answers. I would like to compare my answers to the correct ones and get help on the ones I have been unable to answer. if you could anwer the question and then provide the formula necessary to solve it and/or a one or two sentance explanation, i would appreciate it greatly.

you don't need to provide work! But PLEASE include the formula and or explanation!!!

Help with physics please I have an exam tomorrow and we were given a practice exam without answers. I would like to compare my answers to the correct ones and get help on the ones I have been unable to answer. if you could anwer the question and then provide the formula necessary to solve it and/or a one or two sentance explanation, i would appreciate it greatly. you don't need to provide work! But PLEASE include the formula and or explanation!!!

Explanation / Answer

1) need magnetic force down so B is out of page

so D)

2) so q v B = q E

v B = E

B = E/v so A)

3) right hand rule so out of page

so E)

4)so v into B gives into the right

since negative, flip, so answer is left

so B)

5) to the left so D

6)

1 gives down and to the right

3 gives up and to the right

so resulstant is to the right so B

7) so 1 gives magnetic field down

I into down gives to the right so B

8) newtons third law so to the left

9) v into B gives down but since neg charge flip so up and A)

10) emf = I R

emf = a^2 dB/dt = I R

dB/dt = IR/a^2

so A)

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.