Radio waves travel at 3.00 · 108 m/s. calculate the wavelength of a radio wave of frequency 900 khz. (9.00 · 105 hz.)

m

2.70 x 1014
3.70 x 10-15
3.33 x 102
3.00 x 10-3

To a of 4 x hz is 1. 0. mm nm nm

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.

Does science support the idea that humans have influenced global warming? provide specific examples that show how two knowledgeable individuals with differing opinions might argue.