For a plane to be able to fly clockwise in a horizontal circle as seen from above, in addition to exerting a force downwards on the air
A. it must be increasing its speed.
B. it must exert a force on the air that is directed to the plane's left side.
C. it must exert a force on the air that is directed to the plane's right side.
D. it does not need to exert a force: it must only move the wing flaps out.
E. it only needs to deflect the air without exerting any additional force on the air.
Answer: B
You might also like to view...
A person throws a ball horizontally from the top of a building that is 24.0 m above the ground level. The ball lands 100 m down range from the base of the building. What was the initial velocity of the ball? Neglect air and use g = 9.81 m/s2
A) 202 m/s B) 9.80 m/s C) 19.6 m/s D) 45.2 m/s E) 94.4°
Spheres of Charge: A thin spherical metal shell of radius 8.0 cm carries 7.5 µC of excess charge. What is the magnitude of the electric field it produces at the following places? (k = 1/4??0 = 9.0 × 109 N ? m2/C2) (a) at 1.0 cm above the surface(b) at 7.0 cm from the center of the sphere
What will be an ideal response?
Identical point charges Q are placed at each of the four corners of a 3.0-m × 4.0-m rectangle. If Q = 40 ?C, what is the magnitude of the electrostatic force on any one of the charges?
A. 3.0 N B. 2.4 N C. 1.8 N D. 3.7 N E. 2.0 N
The planet Jupiter is about 300 times as massive as Earth, yet on its surface you would weigh only about 3 times as much because
A) your mass is 100 times less on Jupiter. B) Jupiter is significantly farther from the Sun. C) Jupiter's radius is 10 times Earth's radius. D) you are 100 times more weightless there. E) none of the above