Which of the following is a feature of the sun's radiation? a. it cannot travel through air. b. it cannot travel through vacuum. c. it is made up of rays of the same frequency. d. it is made up of rays of different wavelengths.

The sun's radiation is made up of rays of many different wavelengths.

no sign of dia of fuel cell

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.