. The total linear momentum of a bus of mass 4000 kg that is moving at a speed of 25 m/s and a truck of mass 2000 kg that is moving at a speed of 20 m/s is kg - m/s. a 220000 b 140000 C 180000 d 80000 6 120000

so easy. just google the electromagnetic waves and it’ll pop up.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.