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Questions by Timelord
Physics
Zrak ima pri temperaturi 0°C in tlaku 1,0 bar gostoto 1,25 kg/m3. Kolikšna je gostota zraka v jeklenki pri temperaturi 20°C in tlaku 200 bar?
Chemistry
Na katere ravnotežne reakcije ne moremo vplivati s spremembo tlaka oz. prostornine posode?
Physics
How long would it take a ball to hit the ground, if it fell from 3m?
Challenges by Timelord
Math
PIN koda ima štiri številke, ki so lahko 0, 1, 2, 3, 4, 5, 6, 7, 8 ali 9. Koliko možnih kombinacij je lahko PIN koda?
Math
Son has as many brothers as sisters, daughter has twice as many brothers as she has sisters. How many sons are in the family?
Math
You have 5 different pairs of socks. But it is dark and you cannot see anything. What is the lowest number of socks you need to take to be sure you have at least one pair?
Math
In closet you have 7 different T-shirts and 3 different trousers. How many combinations can you wear?
Math
Brat ima toliko bratov kot sester, sestra pa dvakrat več bratov kot sester. Koliko sinov je v družini?
