The answer is a
Hope this helps!
        
                    
             
        
        
        
Oncology is the study of cancer, so the doctors are called oncologists
        
                    
             
        
        
        
Answer:

Explanation:
Given:
- mass of vehicle,  
- radius of curvature,  
- coefficient of friction,  
<u>During the turn to prevent the skidding of the vehicle its centripetal force must be equal to the opposite balancing frictional force:</u>

where:
 coefficient of friction
 coefficient of friction
 normal reaction force due to weight of the car
 normal reaction force due to weight of the car
 velocity of the car
 velocity of the car

 is the maximum velocity at which the vehicle can turn without skidding.
 is the maximum velocity at which the vehicle can turn without skidding.
 
        
             
        
        
        
Answer:
Venus
Explanation:
Venus is the second plate in the solar system. It is a terrestrial planet and it is part of the inner rocky planets. 
In Venus, it rains sulfuric acid but the rain never reaches the surface before it becomes evaporated. The acid forms from the combination of sulfur oxide and water in the atmosphere at a height of about 42km. As it condenses and falls, it becomes evaporated back at lower elevations. The surface is therefore protected from the sulfuric acid rain. 
The sulfur oxide and water vapor must have been derived from volcanic activities in geologic times past. 
 
        
             
        
        
        
It's called gravity, it attract the sun toward the gravitational pull making everything circulate. I don't really know how to explain it though.