Magnifying / Microscope lens
You would place a slide on the stage of a microscope.
if there was no friction on a slide, you would gain speed and slide off and depending on the slide (such as a water slide) kill yourself. too much friction makes it boring.
The person is using the slide to make himself move.
Shipyard workers would line the slipway with grease and soap and slide the ship into the water. The launch of the Titanic took over 25 tons of grease and soap.
Water can absorb friction because it's wet and slippery. When things are dry, there nothing slippery or wet to absorb the friction, so the friction becomes stronger.
Magnifying / Microscope lens
What instrumentProbably a microscope.
You would place a slide on the stage of a microscope.
You would place a slide on the stage of a microscope.
All brass instruments (except the sousaphone) have slides. They are used to adjust the pitch, sharp of flat. The instrument that is played using a slide is the Trombone. It also has a slide on the back that is used to tune, or adjust pitch.
a water hose
youd go faster, but the slide would get sticky after a while and would give someone a wedgie or pull their pants down!
.
if there was no friction on a slide, you would gain speed and slide off and depending on the slide (such as a water slide) kill yourself. too much friction makes it boring.
an optical telescope
My guess would probably be designing water slides
a jesus pen