The Korean War (1950-1953) marked the first time that the United Nations used military force to oppose aggression.
If the half-life is 5 minutes, then 30 minutes is equivalent to 6 half-lives. So, after six successive half-lives, the 400 mg of the radioisotope would have a mass of 400(0.5)⁶ = 6.25 mg.
Thus, A would be the correct answer choice here.
The answer should be D, nonverbal communication. One's willingness to do, say, or think something does not have to be communicated directly. It can be shown through other actions or behaviors.
Answer:
stimulus discrimination
Explanation:
Mrs. Ridcully probably attempted that her conditioning (her own specific whistle) would eventually be generalized and other similar stimulus (dog owner's whistle) would generate the same conditioned response, but she failed. Instead, the dog discriminates Mrs. Ridcully's whistle from other people's whistle and will only respond to her.
Stimulus discrimination happens when the subject is able to differentiate between different stimuli, and will only respond to an specific stimulus.
D. Probation and parole personnel.
