What are the common problems in writing an abstract?

A certain double-pane window consists of two glass sheet, each 80 cm x 80 cm x 0.30 cm, separated by a 0.30 cm stagnant air space. The indoor surface temperature is 20 deg C, while the outdoor...

In the pursuit of happiness, Cooper sells Q-scanners to doctors. If necessary, he mail-orders the product from the supplier at the beginning of the week, and it takes him 3 weeks to receive the...

Suppose you are going to open your fashion business website. Write a paragraph about your business that get visitors know about your business ?