What is the wavelength of the sound you hear as a train blowing its whistle is coming towards you?
[Wavelegnth is shorter than the sound at rest ]

Aregular polygon has angkes of size 150° each.how many side has the polygon

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Agroup of monkeys is trying to cross the river in a rowboat. the maximum buoyant force on the rowboat is 2,000 n. the weight of the rowboat is 1,000 n. each monkey has a weight of 150 n. how many monkeys can safely cross in the rowboat at one time? explain your reasoning, including any calculations you used to find the answer.