With what type of electromagnetic radiation would you observe:
a star with a temperature of 5800 k?
a gas heated to a temperature of one million k?
a person on a dark night?

Green part of the visible spectrum.

X ray part of the electromagnetic spectrum.

Infrared part of the electromagnetic spectrum.

Explanation:

Wien's displacement law

Where, b = Wien's displacement constant = 2.898×10⁻³ mK

T = Temperature in kelvin

So, the wavelength would be of around the green part of the visible spectrum.

So, the wavelength would be of around the X ray part of the electromagnetic spectrum.

Human body temperature = 37°C = 37+273.15 = 310.15 K

So, the wavelength would be of around the Infrared part of the electromagnetic spectrum.

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.