An airplane that is flying level needs to accelerate from a speed of 2.00 × 102 m/s to a speed of 2.40 × 102 m/s while it flies a distance of 1.20 km. What must be the acceleration of the plane?
A) 4.44 m/s2
B) 2.45 m/s2
C) 7.33 m/s2
D) 5.78 m/s2
E) 1.34 m/s2
C
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Answer the following statement(s) true (T) or false (F)
Eagles and other predatory birds have very sharp eyesight. The pupil of an eagle’s eye is roughly twice the size of a human’s under similar (daylight) conditions. A friend claims to have read that an eagle’s eye has 8 times the resolving power of a human eye in broad daylight. This is physically impossible.
In the subsurface ocean beneath Europa's icy crust, if life exists, it most likely originated
A) close to volcanic vents on its ocean floor B) on the surface and then migrated down into the ocean C) just below the surface of its thin icy crust where sunlight is still able to penetrate D) via panspermia from impacts
Cometary dust tails lag behind the bluish ion tails as the comet rounds the Sun
Indicate whether the statement is true or false
To determine boundary-layer characteristics on a body, we must first know the potential-flow solution. The information used from the potential-flow solution is:
(A) The lift and drag acting on the body (B) The pressure and velocity at the boundary of the body (C) The shearing stress acting on the boundary of the body (D) The normal and shearing stress acting on the boundary of the body