A mild steel wire of length 1.0 m and cross sectional area 0.50 x 10-2 cm² is stretched, well
within its elastic limit, horizontally between
two pillars. A mass of 100 g is suspended
from the mid-point of the wire. Calculate the
depression at the mid-point.

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

What is a possible result of higher air temperature caused by global warming

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?