We can only tell the earth is rotating almost 960 miles an hour if we a
look at other people around us as a reference point.

b
look at mountains far away from us as a reference point.

c
use a reference that is not on the earth, like the sun or stars.

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

The dot diagram represents the motion of the motorcycle as it moves from left to right

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?