Answer:True
Explanation:
Buoyant force is the net upward force, that affect on the object in a fluid
 
        
             
        
        
        
Answer:
0.074m/s
Explanation:
We need the formula for conservation of momentum in a collision, this equation is given by,

Where,
 = mass of ball
 = mass of ball
 = mass of the person
 = mass of the person
 = Velocity of ball before collision
 = Velocity of ball before collision
 = Velocity of the person before collision
 = Velocity of the person before collision
 = velocity of ball afer collision
 = velocity of ball afer collision
 = velocity of the person after collision
= velocity of the person after collision
We know that after the collision, as the person as the ball have both the same velocity, then,


Re-arrenge to find  ,
,

Our values are,
 = 0.425kg
= 0.425kg
 = 12m/s
= 12m/s
 = 68.5kg
= 68.5kg
 = 0m/s
= 0m/s
Substituting,


<em />
<em>The speed of the person would be 0.074m/s after the collision between him/her and the ball</em>
 
        
             
        
        
        
Answer: p= m/v so 90kg/.075m^3 = 1,200 
2a. .35 m 1.1 m and .015 m
2b. 35 cm x 110 cm x 1.5 cm = 5,775 cm^3 = 57.75 m^3
 mass= pv 
2700•57.75= 155,925 kg
mass= 155,925 kg
volume= 57.75 m^3
Explanation: physics 
 
        
             
        
        
        
Answer:
0.5 m/s2
Explanation:
 accelration formula : final velocty - starting velocity divided by time 
 
        
             
        
        
        
Answer: Option (b) is the correct answer.
Explanation:
A gamma particle is basically a photon of electromagnetic radiation with a short wavelength.
Symbol of a gamma particle is  . Hence, charge on a gamma particle is also 0.
. Hence, charge on a gamma particle is also 0. 
For example, 
So, when a nucleus decays by gamma decay to a daughter nucleus then there will occur no change in the number of protons and neutrons of the parent atom but there will be loss of energy as a nuclear reaction has occurred. 
Thus, we can conclude that the statement daughter nucleus has the same number of nucleons as the original nucleus., is correct about if  a nucleus decays by gamma decay to a daughter nucleus.