Physics
The modern Boeing 747 passenger jet airplane cruises at a speed up to 900 km/hr, at an altitude of 11,000 m. The cabin pressure is maintained equivalent to the atmospheric pressure at an altitude of 2,000 m. This is called the "cabin altitude". The pressure as a func...
Physics
On a particular airplane wing, air flows over the upper surface with a speed of 115 m/s and along the bottom surface with a speed of 90 m/s during flight. If the area of the wing is 140 m^2, what is the lift force on the wing? Air density is 1.29 kg/m3.
science/physics
A 230kg ball moving at velocity of 25m/s collides with a 420 kg ball that is not moving. What is the final velocity after contact
math
9+8log9 (9X)=81
4th grade
i need help with a sentence in future tense (it clins to branches and twigs)
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