Question

anu is 5 years old than her your sister after 9 years the sum of their ages will be 45 years find their present age ​

Answer 1

Answer:

Given m=150

g=

1000

150

=0.15kg

Specific heat of iron

C=480Jkg

−1

o

C

−1

)

Δ=(25−20)

o

C=5

o

C

Q=m×C×ΔT

=0.15kg×480Jkg

−1

o

C

−1

×5

o

C

=360J.

Answer 2

Answer:

their present age is 16 and 11

Step-by-step explanation:

in 9 years 16+9=25

in 9 years 11+9=20

20+25=45

hope it helps