At the end of 1/2 second, a skydiver freely falling from rest has a speed of
A. 10 m/s.
B. more than 10 m/s.
C. 1 m/s.
D. 5 m/s.
Answer: D
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The reaction of glucose to form glucose 6-phosphate is an example of which of the following reactions?
A) addition B) condensation C) oxidation D) reduction
Which of the following correctly describes citrate and isocitrate?
A) They are both secondary alcohols. B) They are both tertiary alcohols. C) Citrate is a secondary alcohol, but isocitrate is a tertiary alcohol. D) Citrate is a tertiary alcohol, but isocitrate is a secondary alcohol.
Judge the following sentence according to the criteria given below: Marine invertebrates such as worms, mussels, and octopuses have not had to evolve special mechanisms to maintain their body fluids at a proper concentrations BECAUSE tropical
organisms grow faster, have a shorter life expectancy. A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
A star much hotter than our Sun radiates more energy at ____
a. shorter wavelengths and appears redder b. shorter wavelengths and appears bluer c. longer wavelengths and appears redder d. longer wavelengths and appears bluer e. about the same wavelengths and appears whiter