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Author Question: The nucleus makes up about what percentage of the mass of an atom? a) 25 b) 50 c) 81.3 d) ... (Read 58 times)

jhjkgdfhk

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on: Jul 28, 2018
The nucleus makes up about what percentage of
  the mass of an atom?
   a) 25
   b) 50
   c) 81.3
   d) more than 99

Question 2

A 12-g bullet moving horizontally strikes and remains in a 3.0-kg block initially at rest on the edge of a table. The block, which is initially 80 cm above the floor, strikes the floor a horizontal distance of 120 cm from its initial position. What was the initial speed of the bullet?
 a. 0.68 km/s
  b. 0.75 km/s
  c. 0.81 km/s
  d. 0.87 km/s
  e. 0.41 km/s


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choc0chan

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Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

b


jhjkgdfhk

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Reply 2 on: Jul 28, 2018
Gracias!

chereeb

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Reply 3 on: Yesterday
:D TYSM

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