2 parallel rods 8m apart are yield together by a steel bag 25mm passing through metal plate and nuts
at each other end. The nuts are screwed up to
the plate while the bar is at the
temperature of 150°C . Find the pull force
Converted
by the bar
the bar after
after it have pulled
at 40°C.
a. If the walls do not yield
b. If the total yielding at the two ends.​

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2