circle the number sentences that are not true. a. 3/12 = 1/4 b. 1/2 = 5/10 c. 2/6 = 2/5 d. 7/10 = 4/6 e. 9/10 = 11/12

c d e

Step-by-step explanation:

A: True B:True C:False D:False E:False

Step-by-step explanation:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: