True or false: leverage, screw threads, water density, and ice releasing heat

[lynn0808]

c) It is easier to sweep with a broom if you hand is further up on the handle? is this true or false

d)A screw with fewer threads is easier to use than a screw of the same size with more threads- is this false?

e) Water at 4 Celsius is lighter than at 4.1celsius.? Is this true?

f) ice can release heat. is this true?

 

[Dick]

You aren't playing the Physics Forums game correctly. Give us your reason why one might be true or false, and then we can start from there.