Answer:
The mass is 
Explanation:
From the question we are told that
The initial temperature is 
The final temperature is 
Generally the maximum heat produced by 1 Liter of natural gas is 
So the amount of heat produced by 100 L is
=> 
Generally given that the efficiency is 
Then actual heat received by the water is
=> 
=> 
Converting to kcal
=> 
Generally the specific heat of water is
Generally the heat received by the water is mathematically represented as
=> 
=>
All Offsprings will be round because it comes out as dominant evrytime and it has 0 ressesives. Hope this helped ;)
Answer:
Explanation:
For answer this we will use the law of the conservation of the angular momentum.
so:
where 
is the moment of inertia of the merry-go-round, 
is the initial angular velocity of the merry-go-round, 
is the moment of inertia of the merry-go-round and the child together and 
is the final angular velocity.
First, we will find the moment of inertia of the merry-go-round using:
I = 
I = 
I = 359.375 kg*m^2
Where 
is the mass and R is the radio of the merry-go-round
Second, we will change the initial angular velocity to rad/s as:
W = 0.520*2
rad/s
W = 3.2672 rad/s
Third, we will find the moment of inertia of both after the collision:
Finally we replace all the data:
Solving for :
