My buddy and i are planning a shore dive. we’re descending onto a very gradual slope that begins at 5 metres/15 feet, so our descent and ascent will be a gradual part of swimming out and back underwater. we have similar cylinders filled to 200 bar/3000 psi. we plan: • 50 bar/500 psi reserve. • 20 bar/300 psi for our safety stop. • to turn the dive when we’ve used one-third of the air available to use on the dive. this means we should head back when either of our spgs read

Aman pushes on a trunk with a force of 250 newtons. the trunk does not move. how much positive work is done on the trunk? 0.0 j -250 j 250 j 125 j

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

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter