Suppose a helium balloon is filled with 1,000 cm3 of helium. Each day, the balloon loses half its helium. Identify the amount of helium that will be in the balloon on the second and third days. 1,000 cm3, cm3, cm3

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?

Find the multiplicative inverse of 8-12i

To determine the number of deer in a forest a forest ranger tags 280 and releases them back