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Dahasolnce [82]

3 years ago

15

A block with a mass of 9.00 kg is pulled at a constant speed across a horizontal tabletop with a spring scale. The scale reads 6

1.8 N. Calculate the coefficient of kinetic friction

1 answer:

snow_tiger [21]3 years ago

7 0

Answer:0.69

Explanation:

Coefficient of kinetic friction=f/R=61.8/90=0.69

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The water flowing through a 2.0 cm (inside diameter) pipe flows out through three 1.3 cm pipes. (a) If the flow rates in the thr

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b)0.845

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a) A x V= $A_1V_1+ A_2V_2+A_3V_3$

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v= $\frac{4}{\pi }$ x $\frac{54}{2^2}$

-> $A_1$ x $V_1$ =27L/min => $\frac{\pi }{4} d_1^2$ x $v_1$

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$v_1$ = $\frac{4}{\pi }$ x $\frac{27}{1.3^2}$

Next is to find the ratio of speed i.e $\frac{v}{v_1}$

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$\frac{v}{v_1}$ = 0.845

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