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Eduardwww [97]
3 years ago
6

Which statement describes this pair of congruent triangles?

Mathematics
1 answer:
Volgvan3 years ago
7 0
NLM bc the angled correspond, making the triangles congruent
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Two blocks are connected by a very light string passing over a massless and frictionless pulley. The 20.0 N block moves 75.0cm t
Angelina_Jolie [31]
The string is assumed to be massless so the tension is the sting above the 12.0 N block has the same magnitude to the horizontal tension pulling to the right of the 20.0 N block. Thus, 
1.22 a = 12.0 - T  (eqn 1)
and for the 20.0 N block: 
2.04 a = T - 20.0 x 0.325 (using µ(k) for the coefficient of friction) 
2.04 a = T - 6.5  (eqn 2) 

[eqn 1] + [eqn 2] → 3.26 a = 5.5 
a = 1.69 m/s² 


Subs a = 1.69 into [eqn 2] → 2.04 x 1.69 = T - 6.5 
T = 9.95 N 

Now want the resultant force acting on the 20.0 N block: 
Resultant force acting on the 20.0 N block = 9.95 - 20.0 x 0.325 = 3.45 N 
<span>Units have to be consistent ... so have to convert 75.0 cm to m: </span>

75.0 cm = 75.0 cm x [1 m / 100 cm] = 0.750 m 
<span>work done on the 20.0 N block = 3.45 x 0.750 = 2.59 J</span>
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3 years ago
Can some one help me in this problem
strojnjashka [21]
I believe x=116 and z=26. 4z-40=64
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Sam bought six new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are n
victus00 [196]

Answer:70

Step-by-step explanation:

multiply 38 to get 76 and then subtract 6

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Heather will be 6 and 7 months old
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14 over 70 in simplest form
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14/70 in it's simplest form is 1/5

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