PLEASE ANSWER FAST. one of the barriers for early "talkies" was the need to manually crank the projector and manually synchronize the audio and film, which resulted in uneven quality based on operator skill true or false

How do i draw hello world in python and how do i make it loop?

Which of the following does 3d animation create an illusion of on the screen? a. depth b. emotion c. length d. dialogue

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.