SAT, 30.09.2021 21:00 bernicewhite156
a half-life is the amount of time it takes for a substance or entity to fall to half its original value. caffeine has a half-life of about 6 hours in humans. given caffeine amount (in mg) as input, output the caffeine level after 6, 12, and 24 hours. use a string formatting expression with conversion specifiers to output the caffeine amount as floating-point numbers.
Answers: 1
SAT, 24.06.2019 18:00
Did the universe cool off or get hotter as it expanded after the 'big bang"?
Answers: 2
SAT, 24.06.2019 19:30
Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b
Answers: 1
SAT, 25.06.2019 15:00
Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force
Answers: 1
SAT, 25.06.2019 22:00
Snakes, dogs, and humans have a vertebral column. snakes and dogs have tails, and humans have vestigial tailbones. dogs and humans have limbs, but snakes do not. most reptiles lay eggs, but a few give birth to live young. what do these structures suggest about the evolutionary pattern between the three organisms? 1. snakes and dogs are more closely related than snakes and humans. 2. snakes and humans are more closely related than humans and dogs. 3. dogs and humans are more closely related than snakes and humans. 4. dogs, snakes, and humans share a common ancestor. 5. the early ancestor of snakes and dogs is the same, and the early ancestor of humans is different.
Answers: 1
a half-life is the amount of time it takes for a substance or entity to fall to half its original va...
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