First of all: million, you're right, lot's of behaviours you mentioned here are really silly or questionable.
But for a few questions there are reasonable answers!
i'll pick these questions:
million wrote:
Why do we press harder on a remote control when we know the batteries are flat?
In case of old contacts with high resistance it makes sense: By pressing harder it is possible to increase the contact area and the current through the contact can be higher that way. So with full battereis, the current may be high enough even when the old button is pressed soft, but with old batteries with low voltage it is possible to increase the current to the neccesarry value by pressing harder.
million wrote:
Why doesn’t Tarzan have a beard?
That indeed is so super-silly i can't resist agreeing.
million wrote:
What is the speed of darkness?
Darkness is the lack of light. So darkness increases with speed of the border between light and darkness, which is in many cases the speed of light.
(Why only in many cases: E.g. the border between day and night on earth moves with a speed clearly slower than the speed of light, and it is possible to construct borders between areas with light and areas without light which move faster than light. E.g. a lighthouse with unlimitied range would produce such a border...
In fact all cases where we can see the border between darkness and light don't move with lightspeed.)
million wrote:
If the temperature is zero outside today and it’s going to be twice as cold tomorrow, how cold will it be?
You haven't asked the question in a adequat acurate way:
What do you mean with "temperatur is zero"?
and what is "twice as cold"?
But i try to answer your question by making some reasonable assumptions:
Let's say you use like most people do the Celsius Scale to messure Temperatur. And let's say by "twice as cold" you mean the mean energy of molecules is smaller by the factor 1/2.
In this case, it will be -136.5°C tomorrow:
First you have to use (the only reasonable) temperature scale, where the temperature is proportional to the mean total energy: The Kelvin-Scale. [To be a bit more precise: With the Kelvin Scale the Distribution of Energies E is ~ e ^- (E / (k T)) with k=Boltzmann Constant and T= Temperature]
In the kelvin Scale, 0°C=273K. Half of 273K is 136.5K which is -136.5°C again.
million wrote:Why do toasters always have a setting so high that could burn the toast to a horrible crisp, which no decent human being would eat?
Because ther are people like me who need this range!
My mother bakes breat herself and gives it to me. It is delicious, wth lot's of corns or so and relativly heavy. When I want to toast it, I have to set the toaster on maximum and even toast it twice!