Arkadaşlar 4. Sınıf 4. Deneme adım adım yayıncılık bütün sorular cevap anahtarı accciiişlll yapanı enini seçicem

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?