Answer:
final volume the balloon occupy in instant before it burst is 4.634 L
Explanation:
given data
helium filled V1 = 2 L
initially pressure P1 = 1.25 atm
finally pressure P2 = 410 mmHg
1 atm = 760 mmHg
to find out
at what volume the balloon occupy in instant before it burst
solution
we have given
760 mmHg = 1atm
and 1 mmHg = 1/760
so 410mmHg = 410/760 atm
so that final pressure is = 410/760 atm
we use here Boyle's Law that is
Boyle's law states that "the volume of an ideal gas is inversely proportional to the pressure of the gas at constant temperatures"
so P ∝ 1/V
P1V1 = P2V2
V2 = P1V1 / P2
put all value
V2 = 1.25 (2) / (410/760)
V2 = 2.5 / 0.53947 = 4.634
so final volume the balloon occupy in instant before it burst is 4.634 L
The freezing point of water is 32°F, 0°C.
Answer:
The speed of the football when it lift your hand is 8.86 m/s.
Explanation:
Given that,
Final speed of the football, v = 0.5 m/s
Height above the ground, s = 4 m
We need to find the speed of the football when it left your hand. The ball will move under the action of gravity. Using third equation of motion as:
So, the speed of the football when it lift your hand is 8.86 m/s. Hence, this is the required solution.
I think the amount of force will decrease and the amount of work will increase
A good diet. and exersise is the answer
