Answer:
The one with the faster velocity is the one with a velocity of -10m/s
 
        
             
        
        
        
Although you have not provided the possible answers, igneous rocks are formed out of magma or lava, with or without crystals, and they can be found either on the surface or under it. This is a basic description of the type of rocks, so it might fit some of the answers you may have.
        
             
        
        
        
Explanation:
The electric potential is the electric potential energy per unit of charge

Using this definition, we can calculate the electrostatic potential energy change between point A and B:

Electron: 

Proton: 

Neutral hydrogen atom: 

Singly ionized helium atom: 

 
        
             
        
        
        
one of the property of radio waves is that they have long wavelength. due to their long wavelength , they undergo diffraction around the mountains and thus the waves spread around the mountain. this makes them eligible to be used for  long distance communication. they can coded and decoded also . that is why they are used in television and radio system
 
        
             
        
        
        
Answer:

Explanation:
The period of a physical pendulum is:



The length of the leg is approximately the height of the person:

The period is:

