Answer:
False
Explanation:
No. The buoyant force on an object is the portion of its weight that appears to vanish
when the object is in any fluid (could be either a liquid or a gas).
If the object happens to float in a particular fluid, then the buoyant force at that moment
is equal to the object's weight.
Notice that the buoyant force on an object will be different in different fluids.
 
        
             
        
        
        
Answer:
hub    moon     merc   saturn   sun    galaxy    deep field 
Explanation:
 
        
             
        
        
        
<span> B. The temperature is not rising because the heat is being used to break the connections between the molecules </span>
        
                    
             
        
        
        
Answer: 42.49  
 
Explanation:
To solve this, we need to keep in mind the following: 
While the sphere hangs it is under the effect of gravity. It is creating a Angle of 90° taking the roof as a reference.
Gravity can be noted as a Acceleration Vector. The magnitud for Earth's Gravity is a constant: 9.81 
The acceleration of the Van will affect the sphere also, but this accelaration will be on the X-axis and perpendicular to the gravity. Because this two vectors are taking action under the sphere they will create a angle. This angle can be measured as a relation of the two magnitudes. 
Tangent (∅) = Opossite Side / Adyacent Side
By trigonometry, we know the previous formula. This formula allows us to find the Tangent of a angle as a relation between the two perpendiculars magnitudes. In this case the Opossite Side will be the Gravity Accelaration, while the Adyancent Side is the Van's Acceleration.
(1)  Tangent (∅) = Gravity's Acceleration (G) / Van's Acceleration (Va)        
Searching for the Va in (1)
Va = G/Tan(∅)
Where ∅ in this case is equal to 13.0°
Va = 9.81 / Tan(13.0°)
  / Tan(13.0°)
Va = 42.49  
 
The vans acceleration need to be 42.49  to create an angle of 13° with the Van's Roof
  to create an angle of 13° with the Van's Roof