a two-dimensional unsteady velocity field is given by u=5x(1 t) and v=5y(-1 t), where u is the x-velocity component and v is the y-velocity component. find x(t) and y(t) if

What are similarities and differences between refraction, reflection, diffraction and absorption?

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation