An aeroplane accelerates from rest along a runway at a constant rate of 4ms^-2. It needs to reach a velocity of 80ms^-1 to take off. Find out how long the runway needs to be.

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

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?

Herman is walking his pet fish, leo , back and forth along the canal. suppose the canal is 30 meters long and he goes up and back 25 times. a) what distance has herman walked?