Why do scientists look for asteroids that might strike our planet?

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

What will happen in a hybrid vehicle if current flow becomes too high due to a short?

Select the correct lewis structure for fluorine which is group 7a element?