Will medal ! suppose you are an astronomer, and a child asks you to explain how long it takes light to travel through space. in your own words, answer the child's question. be sure to mention the speed that light travels in space, and provide a general idea of how long it takes the light from distant stars to reach earth.

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

What are similarities and differences of reflection, refraction, diffraction and absorption?

There are two routes similar in terrain; however, one route has an incline of approximately 28 degrees, and you must decide on which route to take. what is the maximum road grade that your fully loaded ecv can climb?