Suppose a supersonic airplane flies at a speed of 1670 km/hr from Nairobi, Kenya to Quito, Ecuador; note that this is the same speed that Earth rotates, but in the opposite direction. Describe how this flight would look to an observer on the Moon.
What will be an ideal response?
Answer: The airplane would essentially appear to lift straight off the ground and then remain stationary while Earth rotated. The rotation would carry Nairobi away from the airplane and Quito toward it. When Quito arrived, the airplane would drop back down to the ground, completing the trip.
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Refer to Figure 6-13. Block A has a mass of 3.00 kg, block B has a mass of 5.00 kg and block C has a mass of 2.00 kg. The pulleys are ideal and there is no friction between block B and the table. What is the acceleration of the masses?
A. 4.20 m/s2 B. 4.71 m/s2 C. 1.86 m/s2 D. 2.94 m/s2 E. 0.981 m/s2
The determination of the composition of a material by bombarding it with neutrons and monitoring the emitted radiation is neutron activation analysis
a. True b. False Indicate whether the statement is true or false
A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to exactly fit within the tunnel. What is the velocity of the train expressed in units of c?
A. 0.333c B. 0.60c C. 0.80c D. 0.50c E. 0.866c
A factory robot drops a 10 kg computer onto a conveyor belt running at 3.1 m/s. The materials are such that ?s = 0.50 and ?k = 0.30 between the belt and the computer. How far is the computer dragged before it is riding smoothly on the belt?
A) 3.0 m B) 1.6 m C) 0.98 m D) 2.3 m