Answer:
25.9 g
Explanation:
= 17.35
8.498
________+
= 25.848 g = 25.85 g = 25.9 g
*so sorry if wrong
Answer:
The law states that when two objects collide in a closed system, the total momentum of the two objects before the collision is the same as the total momentum of the two objects after the collision. The momentum of each object may change, but the total momentum must remain the same.
Explanation:
Answer:
72 J
Explanation:
Total kinetic energy will be tge sum of rotational and translational energy.
Rotational kinetic energy is given by
where I is moment of inertia which is given by
and here m is mass, r is radius. Also,
hence making \omega the subject then
where v is the velocity.
Rotational kinetic energy=
This is same as the formula for translational kinetic energy which is given by 
Therefore, total kinetic energy= 
Substituting m with 2 kg and v with 6 m/s then total energy will be 
Answer:
(A) 
(B) 
Explanation:
Given:
- diameter of the cylinder,

- mass of piston sealing on the top,

- initial temperature of the piston,

- initial height of piston,

- atmospheric pressure on the piston,

(A)
<u>Initial pressure of gas is the pressure balanced by the weight of piston:</u>



<em>Which is gauge pressure because it is measured with respect to the atmospheric pressure.</em>
(B)
Given:
- Final temperature,

<u>Now, volume of air initially in the cylinder:</u>



Using gas law:
........................................(1)
<em>∵In every condition of equilibrium the gas pressure will be balanced by the weight of the piston so it is an </em><em>isobaric transition</em><em>.</em>
∴
<u>Hence eq. (1) is reduced to:</u>

putting respective values:

