Question

what distance will light travel in one second? (pick all correct answers)
93 million mi.
300,000 km
186,000 mi.
1 light second
1 light year
question 37
2 pts
what gasses (elements) are found in the sun? (pick all correct answers)
silver
helium
oxygen
hydrogen
gold

Explanation:

Step1: Recall speed - of - light facts

The speed of light in a vacuum is approximately 300,000 km/s or 186,000 mi/s. A light - second is defined as the distance light travels in one second.

Step2: Analyze each option

• 93 million mi is the average distance from the Earth to the Sun, not the distance light travels in one second.
• 300,000 km is the approximate distance light travels in one second.
• 186,000 mi is the approximate distance light travels in one second.
• 1 light - second is by definition the distance light travels in one second.
• 1 light - year is the distance light travels in one year.

For the second question:

Step1: Know the composition of the Sun

The Sun is mainly composed of hydrogen and helium. There are also small amounts of other elements like oxygen, but silver and gold are not present in significant amounts in the Sun.

Answer:

For the first question:
B. 300,000 km
C. 186,000 mi
D. 1 light second
For the second question:
B. Helium
C. Oxygen
D. Hydrogen