Answer:
a)115 N
b)For father acceleration = 1.69 m/s²
For son acceleration = 3.28 m/s²
Explanation:
Given that
Mass of man(M)= 68 kg
Mass of son (m)= 34 kg
F= 115 N
As we know that from third law of Newtons ,It sates that every action have it reaction in opposite direction but same in magnitude.
So the force exerted by boy on father = 115 N
From Newtons second law of motion
F= m a
F=Force
m= mass
a=acceleration
For father
115 = 68 x a
a=1.69 m/s²
For son
115 = 35 x a'
a'=3.28 m/s²
a renewable energy source from living or recently living plant and animal materials which can be used as fuel. An example of biomass is plant material that produces electricity with steam. An example of biomass is animal fossil fuel.
Answer:
Party, Birthday, Weddings, Nightclub, Just for fun
Answer:
0.0321 g
Explanation:
Let helium specific heat 
Assuming no energy is lost in the process, by the law of energy conservation we can state that the 20J work done is from the heat transfer to heat it up from 273K to 393K, which is a difference of ΔT = 393 - 273 = 120 K. We have the following heat transfer equation:
where 
is the mass of helium, which we are looking for:
