8. Two points A and B located on the surface of the earth are 500km apart....
0.48 12. Two astronauts are m apart in their spaceship. One speaks to the other. The conversation is transmined to earth via electromagnetic waves. The time it takes for sound waves to travel at 343 m/'s through the air between the astronauts equals the time it takes for the electromagnetic waves to travel to the earth. How far away from the Earth is the spaceship? (a) 2.30 m (b) 790 m (c) 4.2x10m (d) 6.9x10Fm (e) 4.5x1010 m 13. Two...
Problem 35.43 Constants Two radio antennas radiating in phase are located at points A and B. 200 m apart (see the figure (Figure 1)). The radio waves have a frequency of 5.80 MHz. A radio receiver is moved out from point B along a line perpendicular to the line connecting A and B (line BC shown in the figure). Part A At what distances from B will there be destructive interference? (Note: The distance of the receiver from the sources is not large...
+8+7 ( 1800) (8d) 3. To find the distance across a highway, a surveyor chooses points A and B, which are (100 +10*N) m apart on one side of the highway (see Fig. 2; the highway is located between the side e and a reference point C- the vertex of the triangle). She then chooses the reference point C on the opposite side of the highway and finds that the angle a (70- N)0 and angle B-(.Approximate the distance afrom...
Please answer the following physic questions. Thank you! 1. A dog sees a flowerpot sail up and then back past a window 5.0 ft high. If the total time the pot is in sight is 1.0 seconds, find the height above the window that the pot rises. 2. An elevator ascends with an upward acceleration of 4.0 ft/s2. At the instant its upward speed is 8.0 ft/s, a loose bolt drops from the ceiling of the elevator 9.0 ft from...