Physics
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zarkam21:
Help
8 years ago
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zarkam21:
8 years ago
zarkam21:
@Vocaloid
8 years ago
Vocaloid:
|dw:1517371381553:dw|
8 years ago
Vocaloid:
just have to go through all 4 numbers and see which one gives you the highest result
keep in mind you must take the absolute value
8 years ago
zarkam21:
D
8 years ago
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Vocaloid:
I got one that's a little further off
as a hint which answer choice is the farthest away from 9.78?
8 years ago
zarkam21:
oh c
8 years ago
Vocaloid:
awesome
8 years ago
zarkam21:
8 years ago
zarkam21:
D
8 years ago
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Vocaloid:
this question is kind of evil on the eyesight but|dw:1517371578645:dw|
8 years ago
Vocaloid:
|dw:1517371585199:dw|
the center of the outlier looks like it's on the left side of 60 so 59
8 years ago
zarkam21:
so A
8 years ago
Vocaloid:
yeah (this q isn't drawn well)
8 years ago
zarkam21:
D?
8 years ago
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zarkam21:
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
D
8 years ago
zarkam21:
8 years ago
Vocaloid:
good
8 years ago
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zarkam21:
8 years ago
Vocaloid:
same formula as the one I posted at the beginning of this page
8 years ago
zarkam21:
D
8 years ago
Vocaloid:
100*|(19.1-19.3)/19.3| = ?
8 years ago
zarkam21:
A
8 years ago
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Vocaloid:
check your calculations again
(19.1-19.3)
divide that by 19.3
take the absolute value
multiply by 100
8 years ago
zarkam21:
B
8 years ago
Vocaloid:
well done
8 years ago
zarkam21:
8 years ago
zarkam21:
A
8 years ago
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Vocaloid:
good
8 years ago
zarkam21:
D
8 years ago
zarkam21:
8 years ago
Vocaloid:
iirc for increments you can measure +1 significant digit than the one given
so for 0.1 ml increments you can measure differences of 0.01 mL which implies A (1.33) is the highest precision available
8 years ago
Vocaloid:
so A
8 years ago
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zarkam21:
B
8 years ago
zarkam21:
8 years ago
Vocaloid:
significant digits are all about precision (A)
8 years ago
zarkam21:
8 years ago
zarkam21:
would it be 59sin(23)
8 years ago
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Vocaloid:
|dw:1517373690957:dw|
8 years ago
Vocaloid:
|dw:1517373696695:dw|
8 years ago
zarkam21:
D
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
8 years ago
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Vocaloid:
no angle is given, will assume that the system is completely vertical
net force = tension - weight
8 years ago
zarkam21:
1300-68=1232
8 years ago
Vocaloid:
68kg is mass not weight
8 years ago
zarkam21:
how do i calculate the weight
8 years ago
Vocaloid:
Fg = mg (be sure to write this down b/c you use this a lot in physics)
8 years ago
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zarkam21:
666.4
8 years ago
Vocaloid:
good, so tension - weight = ?
8 years ago
zarkam21:
A
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
D
8 years ago
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zarkam21:
8 years ago
Vocaloid:
gud
8 years ago
zarkam21:
8 years ago
zarkam21:
B
8 years ago
Vocaloid:
good
8 years ago
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zarkam21:
A
8 years ago
zarkam21:
8 years ago
Vocaloid:
I think that's right (none of the other ones make sense in this context)
8 years ago
zarkam21:
C
8 years ago
zarkam21:
8 years ago
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Vocaloid:
gud
8 years ago
zarkam21:
8 years ago
Vocaloid:
F = ma
8 years ago
zarkam21:
A
8 years ago
Vocaloid:
good
8 years ago
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zarkam21:
8 years ago
zarkam21:
B
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
8 years ago
zarkam21:
c
8 years ago
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Vocaloid:
good
8 years ago
zarkam21:
8 years ago
Vocaloid:
friction force = μ * N
solve for μ
8 years ago
zarkam21:
B
8 years ago
zarkam21:
u=force/n
8 years ago
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Vocaloid:
keep in mind friction force = Ff and normal force = Fn
8 years ago
Vocaloid:
Fk sorry not Ff
8 years ago
zarkam21:
so either c or d
8 years ago
Vocaloid:
v is not part of the formula so it cannot be D
8 years ago
zarkam21:
so c
8 years ago
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Vocaloid:
yes
8 years ago
zarkam21:
8 years ago
zarkam21:
A
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
8 years ago
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zarkam21:
B
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
8 years ago
zarkam21:
A
8 years ago
Vocaloid:
|dw:1517375964628:dw|
8 years ago
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zarkam21:
D
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
8 years ago
zarkam21:
B
8 years ago
Vocaloid:
good
8 years ago
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zarkam21:
8 years ago
zarkam21:
A
8 years ago
Vocaloid:
friction force = μN
8 years ago
zarkam21:
D
8 years ago
Vocaloid:
good
8 years ago
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zarkam21:
8 years ago
zarkam21:
A
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
D
8 years ago
zarkam21:
8 years ago
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Vocaloid:
good
8 years ago
zarkam21:
8 years ago
zarkam21:
C
8 years ago
Vocaloid:
\(\color{#0cbb34}{\text{Originally Posted by}}\) @Vocaloid
friction force = μN
\(\color{#0cbb34}{\text{End of Quote}}\)
check your calculations again
8 years ago
zarkam21:
B
8 years ago
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Vocaloid:
normal force is equal to weight in this scenario
8 years ago
zarkam21:
225.
8 years ago
zarkam21:
which would be 225.4
8 years ago
zarkam21:
because mass*9.8
8 years ago
Vocaloid:
good so friction = ?
8 years ago
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zarkam21:
0.8
8 years ago
Vocaloid:
friction force = μN
8 years ago
zarkam21:
A ugh
8 years ago
Vocaloid:
gud
8 years ago
zarkam21:
8 years ago
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zarkam21:
400
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
8 years ago
Vocaloid:
f = ma
8 years ago
zarkam21:
B
8 years ago
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zarkam21:
8 years ago
Vocaloid:
Fc = mv^2/r ---> would recommend writing this down
8 years ago
zarkam21:
85v^2/r
8 years ago
Vocaloid:
keep going
8 years ago
zarkam21:
85v^2/8=
8 years ago
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Vocaloid:
keep going
8 years ago
zarkam21:
85(4.5)^2/r
8 years ago
zarkam21:
85(4.5)^2/8=
8 years ago
Vocaloid:
good, keep going
8 years ago
zarkam21:
C
8 years ago
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Vocaloid:
good
8 years ago
zarkam21:
8 years ago
zarkam21:
C
8 years ago
Vocaloid:
good
8 years ago
zarkam21:
8 years ago
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zarkam21:
B
8 years ago
Vocaloid:
yup
8 years ago
zarkam21:
8 years ago
zarkam21:
C
8 years ago
Vocaloid:
yup
8 years ago
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zarkam21:
A
8 years ago
zarkam21:
8 years ago
Vocaloid:
good
8 years ago