Ihave this exercise about date operations in r: consider a data frame strdates having values 01/05/1965, 08/16/1975. convert this to different date formats like month/date/year, year-month-date. this is my answer, but i don't know what's wrong: strdates < - c("01/05/1965", "08/16/1975") strdates < - as. date(strdates, format = "%m/%d/%y") format(strdates, "%m/%d/%y") format(strdates, "%y-%m-%d")

What characteristic of long period comets suggest they come directly from the oort cloud?

[a] create a class called “cycle” which has two instance integer variables as properties, “numberofwheels” and “weight.” create a constructor with two parameters, using the same variable names in the parameter list. assign each variable to numberofwheels” and “weight” respectively. write a separate application to test the class and display its properties. note: do not change the names of the instance variables or the variables listed in the constructor’s parameter list. [b] edit your class cycle by adding a default constructor which will assign the default values of 100 to represent the numberofwheels, and 1000 to represent the weight, by invoking a call to the other constructor. modify your application created in [a] to test the class.

What would be the address of the cell, which is at the intersection of the second row and the third column in a worksheet?