A car is on cruise control at v=30m/s. If the wind resistance is equal to. F=0.42v² what energy will the car expend to drive 1km? A)450J
B)378J
C)12.6J
D)378kJ

show your work please

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

Heterogeneous mixture with larger particles that never settle is

What word chemical equation describes cavendish’s experiment with zinc?