Two identical sound waves travel via different ray paths to a detector. Destructive interference between the two waves is observed at a frequency of 100 Hz. Given the speed of sound in the medium as 1500 m/s can you determine the difference in path length?
First round: 3 math questions. Second/Final round: 3 math questions more related to Seismic Imaging.
What work do we do that you find interesting
tell one interesting thing that you do when you are alone. how you got interested in the company? tell at least one or two of the recent technologies that CGG use
geometric sequence
How do you handle unexpected stresses?
As a scholar, will you consider to move back to your country in the future?
Can you share with us some experience in a team?
If there is one piece of material with reflective index gradually changed inside from left to right. Now we know the light travels faster on the left hand side compared to right. If we want to hit the target vertically upside, what direction should the incoming light goes?
Interview 1, Q3: A company wants to make 2880 teddy bears in a day, and they work 24 hours a day. There are three stations that the teddy bears go through. Station A takes 2 minutes per employee, station B takes 6 minutes per employee, and station C takes 4 minutes per employee. How many employees are needed at each station? If the teddy bears cost $20 to make and the employees are paid $15/hour, what price do they need to sell the teddy bears at to break even?
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