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lora16 [44]
3 years ago
8

According to the graph, how many atoms would remain after two half-lives?

Physics
1 answer:
Fudgin [204]3 years ago
4 0

Answer:

Let No be initial no of atoms

N = N0 / 2      after 1 half-life

N = N0 / 4     after 2 half-lives

So after 2 half-lives 20 of the 80 atoms remain

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When you and a friend move a couch to another room, you exert a force of 75 N over 5 m. How much work did you do?
bagirrra123 [75]

Answer:375J

Explanation:

Force=75N

Distance=5m

Work=force x distance

Work=75 x 5

Work=375J

5 0
3 years ago
A bubble, located 0.200 m beneath the surface in a glass of beer, rises to the top. The air pressure at the top is 1.01 ???? 10
SIZIF [17.4K]

Answer:

the ratio of the bubble’s volume at the top to its volume at the bottom is 1.019

Explanation:

given information

h = 0.2 m

P_{0} = 1.01  x 10^{5} Pa

P_{1} V_{1} = P_{2} V_{2}

\frac{V_{2} }{V_{1}} = \frac{P_{1} }{P_{2}}

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P_{1}  = 1.01 x 10^{5} Pa + (1000 x 9.8 x 0.2) = 1,0296 x 10^{5} Pa

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thus,

\frac{V_{2} }{V_{1}} = 1,0296 x [tex]10^{5}/10^{5} = 1.019

8 0
3 years ago
Can someone answer this 2 correctly please
ahrayia [7]

Answer:

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5 0
3 years ago
a train has a velocity of 44 metre per second and an acceleration of 4 metre per second square. its velocity after 10 seconds is
myrzilka [38]

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7 0
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miss Akunina [59]

Answer:

a jet flying through the air making a paper airplane

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3 years ago
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