D When it is stretched ready to shoot at the wall
D, 0.140 liters! Hang on a sec and I'll show you a trick I use.
Radiant energy is the energy of electromagnetic and gravitational radiation
- Pressure = 5000 Pa
- Contact Area = 0.04 m^2
- Acceleration due to gravity = 9.8 m/s^2
- Let the force be F.
- We know, Force = Pressure × Contact Area
- Therefore, Force = 5000 Pa × 0.04 m/s^2
- or, Force = 200 N
- We know, force = mass × acceleration
- Therefore, mass = force ÷ acceleration
- or, mass = 200 N ÷ 9.8 m/s^2 = 20.4 Kg
<u>Answer</u><u>:</u>
<u>2</u><u>0</u><u>.</u><u>4</u><u> </u><u>Kg</u>
Hope you could understand.
If you have any query, feel free to ask.
