QUESTION 23 You take a picture with f-number f-4 and a shutter speed of 1/100 seconds. You change the f-number to f/11 and the shutter speed to 1/50 seconds. The light intensity reaching the sensor has changed by what factor?

this is a good question! i'll do some research and come back when i have the answer!

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is