Vật chuyển động thẳng biến đổi đều có phương trình chuyển động: x= -10 -2t+ (m;s). Vật dừng lại ở thời điểm: A. 2s
B. 1s
C. 1 +
D. 1 -

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point