Answer:
Explanation:
Speed = distance / time
Velocity  = displacement / time
So ,
Speed = 50 km / 0.5 hr = 100 km/h
Velocity  = 40 km / 0.5hr = 80 km/h
 
        
             
        
        
        
C. thalamus
All sensory information coming into the brain from the body must first pass thru the thalamus
        
                    
             
        
        
        
Answer:
it would take him 1 minute to run 304.5 meters and 1 second to run 5.075 meters
Explanation:
 
        
                    
             
        
        
        
Velocity of swimmer across river = 1.30 m/s
Distance arrived downstream = 48 m
Width of river = 64 m
Time taken to cross river = 
                                           = 
Speed of river current = 
                                      = 
So, the river is flowing at a speed 0.975 m/s.
 
        
             
        
        
        
Answer: Hello the missing piece of your question is attached 
question : Determine mass of steam that has entered ( in kg ) 
answer : 0.206 kg 
Explanation:
V1 = 0.1 m^3 ,
 v' = V1 / m1 = 0.1 / 0.6 = 0.167 m^3/kg 
V2 = 0.2 m^3
using the steam tables 
at ; P = 1000 kPa, v' = 0.167 m^3/kg
U1 = 2321  KJ/kg 
at ; P = 1000 kPa , T2 = 280°C
 v'2= 0.2481 m^3kg
U2 = 2760.6
at ; P = 5MPa ,  T = 500°C
h1 = 3434.7 KJ/Kg
 calculate final mass ( m2 ) 
M2 = V2 / v'2
       = 0.2 / 0.2481 =  0.806 kg
therefore the mass added =  m2 - m1 
                                             = 0.806 - 0.6 =  0.206 kg