Quincy's teacher asks him to find an object that could be used as a model of the Sun's structure. Which object would be the best choice?
A.
A spherical water balloon that is completely filled with water.
B.
A piece of yellow construction paper that has been cut into a circle.
C.
A spherical rubber ball that is filled with air.
D.
A spherical piece of hard candy with many different internal layers.

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:

the weight of the object inside the box!

an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110