(please help asap) The standard unit for mass is the
A. Gram
B. Kilogram
C. Ounce
D. Pound

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

If the new moon happens on january 15th, what shape will it be on february 6th?