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Rashid [163]
3 years ago
13

Which of the following could be considered a scientific statement?

Physics
2 answers:
tresset_1 [31]3 years ago
5 0

B. Nancy is the tallest person in the class.

aivan3 [116]3 years ago
3 0
B as it isn’t a opinion instead it’s a fact
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Explanation:

Given

mass of Susan m=12 kg

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F_x=T\cos \theta -f_r

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F_y=mg-N-T\sin \theta

since there is no movement in Y direction therefore

N=mg-T\sin \theta

and f_r=\mu N

Thus F_x=T\cos \theta -\mu N

F_x=29\cos (30)-\0.18\times (12\times 9.8-29\sin (30))                

F_x=25.114-18.558

F_x=6.556 N

Work done by applied Force is equal to change to kinetic Energy

F_x\cdot x=\frac{1}{2}\cdot mv_f^2-\frac{1}{2}\cdot mv_i^2

6.556\times 2.7=\frac{1}{2}\cdot 12\times v_f^2

v_f^2=\frac{6.556\times 2.7\times 2}{12}

v_f^2=2.95

v_f=1.717 m/s        

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