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Author Question: Suppose a ball is thrown straight up and there is no air. What is its acceleration just before it ... (Read 86 times)

silviawilliams41

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on: Jul 29, 2018
Suppose a ball is thrown straight up and there is no air. What is its acceleration just before it reaches its highest point?
 
  A) zero
  B) slightly less than g
  C) exactly g
  D) slightly greater than g

Question 2

In the nuclear reaction 1H + 2H  3He, how does the nuclear energy and the total rest-mass of the two hydrogen nuclei compare with the nuclear energy and the total rest-mass of the resulting helium nucleus?
 
  A) Nuclear energy of helium is more, mass of helium is the same as the mass of the two hydrogen nuclei.
  B) Nuclear energy of helium is less, mass of helium is less.
  C) Nuclear energy of helium is less, mass of helium is the same as the mass of the two hydrogen nuclei.
  D) Nuclear energy of helium, and mass of helium, are both the same as the nuclear energy and the mass of the two hydrogen nuclei.
  E) Nuclear energy of helium is more, mass of helium is more.


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juiceman1987

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

B


silviawilliams41

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Reply #2 on: Jul 29, 2018
TY


juiceman1987

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Reply #3 on: Jul 29, 2018
You're welcome


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