Problem 1:
At 11:00am, a car (1) leaves city "A" at a constant rate of 60 mi/hr toward city "B". At the same time a second car (2) leaves city "B" toward city "A" at the constant rate of 50 mi/hr. The distance between cities A and B is 220 miles and these cities are connected by a highway used by the two cars. At what time will the two cars cross each other?
formation of both images, to show how this is possible. (b) Find the height and image distance for the first image. What is the x-coordinate of the first image, using the x-axis shown on the diagram? (c) Find the radius of curvature of the concave mirror. (d) Find the position and height of the final image. What is the x-coordinate of the second image?
An underground coaxial cable is being used for communication between stations A and B. The stations are 10 km apart. The cable develops a short circuit somewhere between A and B. a. How can you determine the position of the short circuit? Write down the step by step procedure and the relevant equations. b. How can you justify that the problem is a short circuit and not an open circuit?
1. Select b = 0 and find values of a and c for which the vertex is at (0,4) and f has x-intercepts (-2,0) and (2,0). 2. Select a = 1 and c = 2. For which values of b is the x-coordinate of the vertex positive? 3. Select a = -1 and c = 2. For which values of b is the x-coordinate of the vertex positive? 4. Select y-intercept and find the coordinates of the y-intercept in terms of a, b, and c. 5. Select tangent line at x = 0 and find the c