C.
The particles move perpendicular to the direction of the wave.
        
             
        
        
        
Given :
Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south.
To Find :
The magnitude and direction of 
a) A + B .
 b) A - B. 
Solution :
Let , direction in north is given by +j and east is given by +i .
So ,  and
 and 
Now , A + B is given by :


Direction of A+B is 45° north of west .
Also , for A-B :


Direction of A-B is 45° south of west .
( When two vector of same magnitude which are perpendicular to each other are added or subtracted the resultant is always 45° from each of them)
Hence , this is the required solution .
 
        
             
        
        
        
Answer:
3. if you increase your mass you also increase the gravitational pull
6. Radiant energy doesn't depend on a medium and sound energy is dependent on a medium.
Explanation:
i hope this helps- 
 
        
                    
             
        
        
        
Answer:
Masa, m = 0.088 kg
Explanation:
Given the following data;
Temperatura inicial = 30°C
Temperatura final = 120°C
Capacidad calorífica específica = 138J/kg.K
Calor absorbido, Q = 4400 cal.
Para encontrar la masa;
La capacidad calorífica viene dada por la fórmula;
 
 
Dónde; 
Q representa la capacidad calorífica o la cantidad de calor. 
m representa la masa de un objeto. 
c representa la capacidad calorífica específica del agua. 
dt representa el cambio de temperatura.
dt = T2 - T1
dt = 120 - 30
dt = 90°C to kelvin = 273 + 90 = 363K
Sustituyendo en la fórmula, tenemos;
 
 
 
 
 
 
Masa, m = 0.088 kg
 
        
             
        
        
        
Explanation:
Given that,
Potential = 75 kV
Exposure = 200 mR
Time = 0.2 sec
We need to calculate the x-ray fluence during this chest x-ray exam
Using formula of fluence 

Put the value into the formula


We need to calculate the energy fluence
Using formula of energy fluence


We need to calculate dose -equivalent delivered to the bone, muscle, and fat
Using formula of dose

Where, D = dose
E = energy
t = time
Put the value into the formula


Hence, This is the required solution.