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morpeh [17]
3 years ago
15

1. By what are isotopes identified? A.mass numbers B.atomic masses C.atomic mass units D.average atomic masses

Physics
1 answer:
Sladkaya [172]3 years ago
3 0

Answer:

1. A - mass number

2. B - 146

3. B - 20

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Friction changes the energy of an object from kinetic energy to _____________ energy?
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The weight of the block in the drawing is 97.0 N. The coefficient of static friction between the block and the vertical wall is
katrin [286]

Hello,

I hope you're having a great day!

Here's what I got to question A and B

a) Fs(max)=(0.560)(88.9N)=49.8N Fy=88.9N-49.8N=39.1N Fx=(39.1N)/(cos(40))=51.0N sqrt{39.1^2+51.0^2}=F

F=64.3N

b) 88.9N +49.8 N=138.7N=Fy Fx=(138.7N)/(cos(40))=181.06N sqrt{138.7^2+181.06^2}=F

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Read 2 more answers
How is energy conserved in a process of a heart beat
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Explanation:

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3 0
3 years ago
1. The current in a wire is 0.72A. Calculate the charge that passes through the wire in; a. 4 s b. 60 s c. 180 s d. 7 s e. 0.5 s
Vlad [161]
Let current be I, charge be Q and time be t.
Here we are provided with,
I = 0.72A
t = 4s / 60s / 180s / 7s / 0.5s
We know,
I = Q/t

Case I
---------
When, t = 4s
0.72 = Q/4
Q = 0.72 * 4 = 2.88C

Case II
----------
When, t = 60s
0.72 = Q/60
Q = 0.72 * 60 = 43.2C

Case III
-----------
When, t = 180s
0.72 = Q/180
Q = 0.72 * 180 = 129.6C

Case IV
-----------
When, t = 7s
0.72 = Q/7
Q = 0.72 * 7 = 5.04C

Case V
----------
When, t = 0.5s
0.72 = Q/0.5
Q = 0.72 * 0.5 = 0.36C
6 0
3 years ago
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