The difference between a shower and a tub is the shower tends to enclosed with water that comes out of a shower head above while a tub has a faucet that pours into a large basin.
You have a cross connection on a faucet somewhere in the house. That means the hot is overriding the cold because of a malfunctioning faucet. Usually happens at the tub/shower diverter if it is a single handle.
You may have temperature-adjustable fixtures installed in that bath. For example, the Delta Monitor series lets you set a maximum hot water limit, to prevent scalding. Try looking up your faucet/showerhead model online to see if they are adjustable in this way.
The mains water has probably been turned off and turning on the tub has drained the tank.
if u take too long a hot shower, ur body temperature will adjust to the temperature of the hot water and its hard on your heart
The temperature adjustment on a single handle Delta faucet is in the valve operation itself, however, the high temperature limit is adjustable, and is probably what you are referring to. To adjust it, you have to remove the handle from the trim. Beneath the handle are two geared rings which control the high temperature limit. Remove the inner ring (they may both fall out) and turn it CCW (if memory serves..) to raise the high limit. If I got it backwards, turn the ring CW and try again.
Yes
yes
No
A tub faucet acts as a shower and can be used to bath in the bath tub. It is a pressure valve which makes the flow of water through it constant and gives a nice shower.
Faucet side.
Most of them are in the wall. The other would be a deck mount, which is mounted to the fiberglass tub deck and uses a Roman Tub Faucet.
It depends on the make of the faucets.
A Roman tub faucet does have good water pressure because it is made to do that. How good this is depends on how other brands perform in this area.
By un surrounding it
Maybe the kitchen is further away and on smaller pipe.
It may be easier and cheaper to buy a whole new faucet.