What is the de broglie wavelength, in cm, of a 11.7−g hummingbird flying at 1.20 × 102 mph? (1 mile = 1.61 km.)

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

the objects have the same charge.