一道AP物理题How many different photon frequencies can be emitted

How many different four-digit numbers can be formed by rearr with 1234can from how many different four-digit number? How many different kinds of letters can you think of 一道英文的物理题When a proton captures an electron,a photon with ane 1.Corn can be prepared _______ many different ways. How many apples do we need?A Two should be enough B Three ap How many distinct composite numbers can be formed by adding How many basketball player can be on the court How many times can 19 be subtracted from 27? How many different arrangements can you make of all the seve 英语翻译The word “sharp” can be _1_ to describe many different t 英语翻译Different colours can affect us in many different ways;