The net force on the bookcase in the direction of its motion is
∑ F = 65 N - F[friction] = (41 kg) (0.12 m/s²)
so that friction has a magnitude of
F[friction] = 65 N - (41 kg) (0.12 m/s²) = 60.08 N
The net force on the bookcase perpendicular to the surface is
∑ F = F[normal] - (41 kg) g = 0
so that
F[normal] = (41 kg) g = 401.8 N
If µ is the coefficient of kinetic friction, then
F[friction] = µ F[normal]
so that
µ = F[friction] / F[normal] = (60.08 N) / (401.8 N) ≈ 0.15
Answer:
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Explanation:
Answer:
22.61 g/cm³
Explanation:
The density is the mass divided by the volume
The volume of a cube is:
1.500³ = 3.375 cm³
76.31/3.375 = 22.61 g/cm³
Answer:
1
Explanation:
(x-2)^2 = x equals 2 ( double roots)
(y-3)^2 = y equals 3 (double roots)
(z+4)^2 = -4 (double roots)
2 + 3 -4 =1
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Hope this help you out.
