Addition by 1. Components: An airplane undergoes the following displacements, all at the same altitude: First, it flies 59.0 km in a direction 30.0° east of north. Next, it flies 58.0 km due south. Finally, it flies 100 km 30.0° north of west. Use components to determine how far the airplane ends up from its starting point.
A. 71.5 km
B. 73.0 km
C. 74.4 km
D. 70.1 km
E. 68.7 km
Answer: A
You might also like to view...
The orbits of most asteroids:
A) lie beyond Neptune. B) lie entirely beyond the orbit of Mars. C) cross the orbit of Mars. D) cross the orbit of Earth. E) cross the orbits of all four terrestrial planets.
A 5.0-kg mass is suspended by a string from the ceiling of an elevator that is moving upward with a speed which is decreasing at a constant rate of 2.0 m/s in each second. What is the tension in the string supporting the mass?
A. 49 N B. 39 N C. 59 N D. 10 N E. 42 N
Photons of red light cause a surface to emit photoelectrons with maximum kinetic energy K(red). If photons of blue light of the same intensity are now used in the experiment, which of the following statements is true about the photoelectrons emitted (if any are emitted)?
A. no photoelectrons are emitted B. maximum K(blue) < K(red) C. maximum K(blue) = K(red) D. maximum K(blue) > K(red) E. none of these choices are true
Water (density = 1.00 × 10^3 kg/m3) flows at 7.2 m/s through a pipe with radius 0.025 m. The pipe goes up to the second floor of the building, 2.00 m higher, and the pressure remains unchanged. What is the radius of the pipe on the second floor?
a. 0.019 m b. 0.036 m c. 0.0013 m d. 0.23 m e. 0.022 m