Answer
given,
mass of the piano = 170 kg
angle of the inclination = 20°
moves with constant velocity hence acceleration = 0 m/s²
neglecting friction
so, force required to pull the piano
F = m g sin θ
F = 170 × 9.81 × sin 20°
F = 570.39 N
so, force required by the man to push the piano is F = 570.39 N
Answer:
c. Groundwater contamination at a fracking site
Explanation:
all others could be sources from tens of square kilometers of surface area.
Fracking is limited to within a short range of the well hole.
Answer:
C hope it helps
call the client and inform her that she was incorrectly charged.
