Answer:
D. x-rays 
Explanation:
Lower frequency: Radio waves, microwaves and infrared have lower frequency than visible light. Shorter wavelength: Ultraviolet, x-rays and gamma rays have a shorter wavelength than visible light.
 
        
             
        
        
        
Answer:
1.3 m/s
Explanation:
average speed = total distance/ total time
 
        
             
        
        
        
Answer:
t is time in s For example, a car accelerates in 5 s from 25 m/s to 3 5m/s. Its velocity changes by 35 - 25 = 10 m/s. Therefore its acceleration is 10 ÷ 5 = 2 m/s2
Explanation:
 
        
             
        
        
        
Solar system is nested nearly 2/3 of the way from the center of the galaxy to the outskirt of the galactic disc.