A cube with side length = 2 m is placed in an electric field with strength E = 1.6 × 105 N/C directed along the +x axis. If the cube contains no charge, calculate the net flux ΦΕ through all faces of this cubical surface.

A small ping-pong ball of mass m = 0.025 kg and charge q = 140 μC is suspended vertically by a string of length L = 0.5 m in an electric field of strength E = 2500 N/C.  In Case A, the electric field is directed vertically downward.  In Case B, the electric field is directed horizontally to the right causing the ping-pong ball to make an angle θ with the vertical. In Case A, what is the tension T in the string suspending the ping-pong ball?

Mention 2 things you are not allowed to use/have/do during the test?

Which online community characteristic specifies that communities thrive on communications among members?

Which of the following best completes the following statement, ‘Connected ______ in a network experience ______; these are behaviour-based ties such as talking with each other, attending an event together or working together.’?

An example of a carbohydrate that was mentioned in class is ____________.

All of the following apply to Cyanobacteria EXCEPT …

Are most prokaryotes larger or smaller than eukaryotes?  

Which of the following is a characteristic of prokaryotic cells but NOT of eukaryotic cells?

Which of the following has higher energy? Photons of …