Which form of radiation has the lowest frequency?
a. gamma
b. microwave
c. ultraviolet
d. infrared
e. visible
b
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A projectile is projected from the origin with a velocity of 30.0 m/s at an angle of 40.0 degrees above the horizontal. What is the position vector when the projectile is at the maximum height?
A. X = 45.2 m, Y = 19.0 m B. X = 21.1 m, Y = 19.0 m C. X = 51.1 m, Y = 21.1 m D. X = 45.2 m, Y = 21.1 m E. X = 19.0 m, Y = 17.5 m
A Boeing 737 airliner has a mass of 20 000 kg and the total area of both wings (top or bottom) is 100 m2 . What is the pressure difference between the top and bottom surface of each wing when the airplane is in flight at a constant altitude?
a. 1 960 N/m2 b. 3 920 N/m2 c. 7 840 N/m2 d. 4 560 N/m2 e. 3 070 N/m2
Accuracy refers to how close a measurement is to the true value
Indicate whether the statement is true or false
The centripetal acceleration on an object in uniform circular motion
A. is directed tangent to the circle B. points away from the center of the circle C. points toward the center of the circle