Me with my !
2. a metal bar is 100cm long. it is heated for an hour. what could be the new length of the bar? a)102cm b)99cm c)98cm d)99.2cm
3. why are there gaps in concrete roads?
a)to allow for contraction
b)cheaper
c)to allow for expansion
d)it makes it easier to repair one section of the road

2 b

3 d

you are welcome for that

"a connection, a bond or common feeling between two people", or as a chemical process it stimulates love or sexual attraction

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.