A transverse wave travelling along a string has a form y=0.3sin pi (0.5z-50t) : obtain the wave length, 1. wave number, frequency, period and phase velocity ?
2. find the max-transverse speed of any particle in the string. relate y=0.3sin pi (0.5z-50t) to y=asin(kz-wt) and y= acos(-kz-cot)

The renting agent says i have to rent for at least one year. but i’m not sure how many months i’ll be in town.

Which of the following is an example of proximodistal pattern of growth? (a) abbey learning to sit first before learning to stand or crawl (b) alex learning to move his eyes before learning his first words (c) colin learning to stare at moving objects before trying to touch them with his hands (d) polly learning to grab the objects with her whole hands before learning to pick them up with her fingers

When individuals with a stake in an issue affecting them begin to propose and develop solutions to a problem, they engage in