A distant large asteroid is detected that might pose a threat to Earth. If it were to continue moving in a straight line at constant speed, it would pass 16500 km from the center of Earth. However, it will be attracted to Earth and might hit our planet.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

the answer is b

explanation:

heats surface water up