Why do liquids flow?

a liquid particles are wet?
b liquid particles are smooth?
c liquid particles are not fixed in place?
d liquid particles are attracted to each other?

i think the answer is d

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same