CEED 2022

0/41

Q7.A system of frictionless and massless pulleys is being used to pull up a load of 2520 N. What is the minimum force (in Newtons) required at the end of the rope (shown in dashed lines)?

Q9.A virus has two variants P and Q. Two treatments L and M were developed against variant P and Q and tested through four independent trials. Treatment L: 44 successes/50 against P, 81 successes/100 against Q, 125/150 total. Treatment M: 94 successes/100 against P, 31 successes/50 against Q, 125/150 total. Assuming both variants are equally prevalent and both treatments cost about the same, but a given patient can be treated with only one treatment, which of the options is/are true?

CEED2022Q8·nat·Hard111 attempts

Shown below are three views of the same solid. Count the number of edges.

Your answer

Keyboards off — use the numpad, just like on exam day.