Aprobe orbits the black hole in problem 1 from a distance of 500 m above the event horizon. it gives off a signal as a gamma ray with a wavelength of 0.005 nm. if you are an observer very far away from the black hole, at what wavelength and frequency do you detect signal?

How do the various countries in east asia meet their power needs? give specific examples

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.

Countries in this region are trying to achieve development. a. attainable c. sustainable b. suspendable d. intangible