The dominant wavelength of energy emitted by the sun is

.   The answer is; A Shorter than that emitted by the earth

When the electromagnetic radiations from the sun hit the earth, they  may be reflected back to space, absorbed by the earth, or scattered. These cause some energy to be lost from the radiation from the sun. The radiation emitted from the earth is therefore of lower energy. This means they have a larger wavelength and longer frequencies.  

no simpler subs form complex ones. synthesise = make

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.