A plane is moving due north, directly towards its destination. Its airspeed is 200 mph. A constant breeze is blowing from west to east at 60 mph. At what rate is the plane moving north?
a. 198 mph
c. 191 mph
b. 196 mph
d. 180 mph
B
You might also like to view...
A layer of insulating material with thermal conductivity K is placed on a layer of another material of thermal conductivity 2K. The layers have equal thickness. What is the effective thermal conductivity of the composite sheet?
A) 1.5K B) 3K C) K/3 D) 2K/3 E) K/5
If an observer walks north toward increasing latitude, the number of circumpolar stars would
a. remain constant. b. decrease. c. increase. d. Unknown unless you also state the longitude of the observer.
Could acupuncture be responsible for the patients' recovery?
A) No. If there is no plausible mechanism of action, then clearly acupuncture cannot be responsible for their healing. B) Yes. Just because we don't understand the mechanism doesn't mean the process does not occur. C) No. Acupuncture is not accepted by most medical doctors, therefore it isn't effective. D) Yes. If the patients got better, then the acupuncture must be effective.
A laser beam is incident from the air at an angle of 30.00° to the vertical onto a solution of Karo syrup in water. If the beam is refracted to 19.24° to the vertical, what is the index of refraction of the syrup solution?
What will be an ideal response?