Answer:
B
Explanation:
the balloon has a negative charge and the metal sphere has a positive charge
mass times specific heat times tem change.
57 x sh x (30-11)
convert to mks and look up sh iron
Their combined momentum after they meet is 0 .
Answer:
A
Explanation:
It varies from person to person.
Answer:
they are used in periscopes,for signalling,in kaleidoscopes,to see round dangerous bends
Explanation:
