A boat covered 5/9 of a journey at an average speed of 25 mph then it travels remaining 120 miles at another speed if the total time of the whole journey was 8 1/2 hours what was the amount of time the boat spent on the remaining 120 miles? (write as a decimal)

found in the nucleus

has mass of one amu

b.a device that inputs heat into a cool object

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

that the claims meet official rules.

don't misinterpret the claims