Which of the following characteristics of stars is affected by a star's temperature? brightness
color
distance from earth
size

Second option is correct.

Explanation:

Characteristics of stars is affected by a star's temperature is Color.

As the color of stars is completely dependent upon its own surface temperature.

If the stars are cooler, then it turns red in color.

If the stars are hotter, then it turns blue in color.

If the stars are in the mid ranges, then it turns white in color like sun.

Hence, color is the main characteristic of stars which is affected by a star's temperature.

Thus, Second option is correct.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards