What is the speed of a wave that has a frequency of 175
to the nearest whole number

The substances that are necessary for producing of certain hormones and that store and transport vitamins

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?