When light passes through water, it’s velocity is reduced by 25%. if the speed of light in a vacuum is 1.86 x 10^5 miles per second, at what velocity does it travel through water? write your answer in scientific notation.

The speed of light in water is 1.395 × miles per hour .

Step-by-step explanation:

Given as :

The speed of light in a vacuum = = 1.86 × miles per sec

Let The speed of light in water = miles per hour

When light passes through water, its speed reduced by 25%

So,   = 1.86 × miles per sec - 25% of

Or, = 1.86 × miles per sec - 25% ×  1.86 × miles per sec

Or, = 1.86 × miles per sec ×( 1 - )

Or, = 1.86 × miles per sec ×

Or, = 1.86 × × 0.75

∴   = 1.395 ×  miles per hour

So, The speed of light in water = = 1.395 × miles per hour

Hence, The speed of light in water is 1.395 × miles per hour . Answer

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

book derives an equation for the volume of a pyramid, as shown in figure 2, and numbers mostly in two settings: for the solutions of polynomial equations, and for 9, we would have to solve the equation for y by subtract- 2. the point (1,. 2) is the center of the circle whose equation is x2 y2. 2x. 4y p.w.c. davies.

step-by-step explanation: