The speed of light in a certain medium is 61.2% of the speed of light in vacuum. What is the index of refraction of the medium?

The period of rotation of each galilean moon equal it period of revolution around Jupiter

Classify each action as a cause or an effect of climate change. Fossil fuels burn. Glaciers melt. Climates change. Rain falls in unusual amounts. Cities become more industrialized. Human population grows worldwide.

A rock is suspended from a scale reads 20.0 N. A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock?

Which of the following is an advantage of using solar energy? A) it is expensive to maintain. B) it requires a high initial investment. C) it is a form of free and abundant energy. D) it requires good sun exposure.

What is a common source for a voltage difference

A joule is equivalent to a

A proton has an initial speed of 3.7*10^5 m/s. a) What potential difference is required to bring the proton to rest? (V) b) What potential difference is required to reduce the initial speed of the proton by a factor of 2?

If a ball is dropped from rest from an elevated position at the same instant that a second ball is launched horizontally (from the same height), then which ball will hit the ground first? Assume the balls behave as projectiles

What are 5 Non-Examples of Density

With the switch closed, how does the voltage across the 20-ω resistor compare to the voltage across the 10-ω resistor?