Question

Answer plzzzzzzzzzzzzz

Answer 1

Fibre meant crops which we grow like wheat maize

Answer 2

Q=m C ∆T

C= specific heat
Q= amount of heat
m= given mass=100g=0.1kg
∆T = temperature change...= 70-20=50


=> Q=0.1 x 390 x 50

=> Q= 1950J

hope it helps you....
:)...