An air-track glider attached to a spring oscillates between the 15.0 cmcm mark and the 56.0 cmcm mark on the track. The glider completes 10.0 oscillations in 31.0 ss . What are the (a) period, (b) frequency, (c) amplitude, and (d) maximum speed of the glider

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

i already answered it by 34/s