Bài tập toán cơ bản số 43

Created by T. Madas
Question 49
Rearrange the following formulae for the variable written inside the square bracket.

a) E =

λ
2a

b) F = G

x 2 [ x]

mM
r2

[ m]

(**+)

x=±

(**+)

m=

2Ea

λ

Fr 2

GM

c)

y = 2 x [ y]

(**+)

y = 4 x2

d)

y − 1 = 3x [ y]

(**+)

y = 9 x2 + 1

(**+)

h=

A
A − 2π r 2
−r =
2π r
2π r

(**+)

u=

2s
2 s − vt
−v =
t
t

g) B = Ax 2 − T [ x]

(***)

x=±

B +T
A

h) Y = 1 Bx 2 [ x]
2

(***)

x=±

2Y
B

e) A = 2π r ( r + h ) [h]

f) s =

u+v
t [u ]
2

Created by T. Madas


Created by T. Madas
Question 50
Rearrange the following formulae for the variable written inside the square bracket.

(

)

(***)

2
2
2
x = ± a 2 − v 2 = ± a −2v

1
b) s = ut + at 2 [a ]
2

(***)

a=

c) 2π rh + π r 2 = 600 [h]

(***)

h=

(***)

3 A − π kr 2
t=
3π r

[ x]

(***)

x=±

a
C

[a]

(***)

a=±

1
S

(***)

y = ( 2 x + 1)

(***)

k=

a) v 2 = ω 2 a 2 − x 2

[ x]

1
d) π rt + π kr 2 = A [t ]
3

e) C =

f) S =

g)

a
x

2

1
a

2

y − 1 = 2x [ y]

h) kt − kh = c [k ]

Created by T. Madas

ω

2s − 2ut
t2
600 − π r 2
2π r

c
t−h

2

ω