3. list the 7 types of electromagnetic radiation in order of highest energy to lowest energy.\n4. what is…

Explanation:

Step1: Answer question 3

The 7 types of electromagnetic radiation in order of highest energy to lowest are gamma - rays, X - rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves.

Step2: Answer question 4

In physics, $c$ represents the speed of light in a vacuum, approximately $3\times10^{8}\ m/s$.

Step3: Answer question 5

We know that the speed of light $c = 3\times10^{8}\ m/s$, and the distance $d=1.4\times 10^{11}\ m$. Using the formula $t=\frac{d}{c}$, we have $t=\frac{1.4\times 10^{11}}{3\times 10^{8}}s=\frac{1400}{3}s$. To convert to minutes, since $1\ minute = 60s$, then $t=\frac{1400}{3\times60}\approx7.78\ minutes$.

Step4: Answer question 6

From the formula $A = \frac{B}{C}$, $A$ and $C$ are inversely proportional (as $C$ increases, $A$ decreases when $B$ is constant), and $A$ and $B$ are proportional (as $B$ increases, $A$ increases when $C$ is constant).

Step5: Answer question 7

The symbol for proportional is $\propto$.

Answer:

3. Gamma - rays, X - rays, ultraviolet radiation, visible light, infrared radiation, microwaves, radio waves
4. The speed of light in a vacuum, approximately $3\times10^{8}\ m/s$
5. Approximately 7.78 minutes
6. $A$ and $C$ are inversely proportional; $A$ and $B$ are proportional
7. $\propto$