HBCS

E

P

s

r

t q t t

HBCS

E

r r r r t

t t rr r

t t r Pr Pr

Pr

q

t t r t r

t t

q

Pr t

q

t t t t

t rr t r t t rr

t r tt t t Pr P

Pr

tr r

q

t rt r rr

r tr

r t r r r

q

t r

t r

r

r t

r

r

t t r rt r

t

P

r

r

t r tr

Pr

Pr

r r

r

rt

Pr r

tr

HBCS

E

P

P

ss ss

ss s

s

s

s

ss

ss ss

s

r

s

r

s s

sss

t s

r

s

s

s

s t s ss

s

ss

s s

ss

s

r

ss

s s

1m.s1 1 m.s 1

0 5 5

A B

x

y

ss

s

s

t s s sss

s

ss

s

sss

s

r

s

sss

sss

s

t

sss

s

s s

s

s

s

s

HBCS

E

P

t (in seconds)0

5

5

x (in meters)

s t t s s

t (in seconds)0

5

5

x (in meters)

HBCS

E

P

S1 S2

A1 A A2 3

q

t

q

t

HBCS

E

P

s

t t sss

t

t

HBCS

E

P

s s ss s s t ss

t t t st ts t t s t

t ss s t t

t t s

s

tt t t s s s tt t t t t t

t t ss t

st s

ss

t t t t ss

s

t s

t

t st s

t

tt t t

t t s s

tt t t t

t s

st

t ts t t t

s t tt s

s

t s

t t

t ss

t t ss

s ts

HBCS

E

P

t t t t

t t t t t

t

t

t t

t tt t t t t

t

R

l

H

m

y

x

tt t t t

t

tt t t t

t t

t t t

tt t tt t t t

t

tt t

t tt t

t

t

t

t t

tt t

t

t

t t t t t t tt

t t t t

tt t

t

t

q

tt

HBCS

E

P

t

tr q

rt r t tq

rr

t

tr q

r t

rr t tr

q

t t t t

tr q

tt

HBCS

E

P

r r

r q t

r

r

r

r r r r

r r

r

r

r r

tr r

rt

r

tr r

r

r r r

r

r r

t

HBCS

E

P

P

s s

s

s

s

s

s

s

s

s

s

s

s

negative netnet charge

Sheet of flexible rubber with zero

Wall with a

charge

s

s

s

s

s

q

s

s

s

s

HBCS

E

P

+Q+q

s s

q

q

s

s

s

s

B A BAA B

40V20V10V 50V 10V 20V 30V 40V 50V50V30V10V

40V

I II III

20V30V

s

s

s

s s

s s

s

s

HBCS

E

P

rt t t t

tr r t tr t

t r

t

r

tr r

t

t

t t

t

r

t rt t rr

t

t rt t

t

+Q QP

+Q

IIII

IV

II

V (out of the plane of the paper)

t r

t

t

tr t

r

tr r

r

tr ttr t t

t r tt t rr

t

tr

r t r t

t

t

rt t t

t

t

t rt t t

r

tt

t r rt

Battery

Crosssectional Pipe full of salt water

+ Ammeter

area A

t t

t

t

tr r

r

t tr r

t t ttr r t tr r

ts t t

r t t

HBCS

E

P

t tt t t

Battery D E

C

B

A

t t

tt t

t t t t

t

Lightbulb

Battery

t

t

t

t

t

t

t

t

t

t

t

t t

t

t

t tt

t t

t

t

S

N

(c)(a)

(d)

(b)

(e)

S

N

S

N

S

N

S

N

HBCS

E

P

s s s s

ss s s s s

s s

A

B

N S

N

S

s s

s

s s s s

v

s s ss s

+

++

++

+

+

+

+++

++

+++

++

+

+

+

+

+

+

+

+

(a) (b) (d) (e)(c)

s s s s s s

s

s

HBCS

E

P

S

N

t t

t t

t t t

t t tt

t

t t

t t

t

t

t

t t

t t

t t t

t

t

t

t q

t

t

t

t t

t

t t t

qx

v

t

t

t

t

t

t t

t

t t t

t

HBCS

E

P

bulb

bulb

bulb

stationarymoving leftv

NS

S N

S N

S Nmoving left

v

stationary

stationary

stationary

collapsing loop

loop rotatingCCW about axis

bulb

axis

axis

axis

axis

I

II

III

IV

t t t

t t

t t

t

t

t t t

t t

t

t t t t t t

B

1P 2P

(c)

t

v

t

t

(d)

(b)

(e)

(a)

t

t

v v

vv

HBCS

E

P

s s s s

t s t t t t s s

t t

I increasing1

solenoid ( end view)perspective viewLong solenoid,

t t st t t s t t

s t

t

s

t

P

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

HBCS

E

P

HBCS

E

P

HBCS

E

P

HBCS

E

P

HBCS

E

P

HBCS

E

P

HBCS

E

P

t t

t (in seconds)0

5

5

x (in meters)

1 2 3 4 5 6 7 8 9 10

Motion of skater B

Motion of skater A

t (in seconds)0

5

5

x (in meters)

P1 P2

P3

P = (3.6,1.4)1

P = (3.9,3.8) 3P = (3.5,2.4)2

SkaterBMotion of

Motion ofSkaterA

1 2 3 4 5

Coordinates (x,t)

HBCS

E

P

P

P

P

P

P

P

s

P

s

ss

s

Crown Flint

7.63.13.9

5.2

3.7

r

HBCS

E

ttt

t t t ts

t t st

s

t t s

t

t t

s

P

t

t

t

tt t t

t

t

s

s

s

s

s