The mass of an electron is approximately

9.1·10 with Exponent of -31 kilograms. The mass of a proton is approximately

1.7·10 with Exponent of -27 kilograms.

Approximately how many times greater is the mass of a proton than the mass of an electron?

A

1,900

B

5,500

C

19,000

D

55,000

I’m not sure about that

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )