You are in an ambulance moving at 75 km/h. If your siren is blaring at 450 Hz and the air temperature is 0.0 °C, what frequency would a pedestrian on the side of the road hear as you are moving away?

Which of the following describes something an engineer would probably do first when developing new technology meant to reduce ocean pollution? o a. evaluate the benefits and challenges of using certain chemicals to purify water. o b. research new scientific findings in regard to ocean cleanup. o c. identify the need to reduce ocean pollution. o d. research what has been done in the past to clean up oceanic oil residue.

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering