Class Management Help Problem Set 10- Vol 3 Ch1- The Nature of Light Begin Date:
ID: 2304568 • Letter: C
Question
Class Management Help Problem Set 10- Vol 3 Ch1- The Nature of Light Begin Date: 3/1/2018 12:00:00 AMDue Date: 4/15/2018 10:59:00 PM End Da 10:59:00 PM (17%) Problem 1: In the year 1 178, five monks at Canterbury Cathedral in England observed what appeared to be an asteroid colliding with the moon, causing a red glow in and around it. It is hypothesized that this event created the crater Giordano Bruno, which is right on the edge of the area we can usually see from Earth. D à How long after the asteroid hit the Moon, which is 3.84 x 10 km away, would the light first arrive on Earth in seconds? Poten sin( ) | cos() | tan() | ?| ( 1718191- cotan asin ac atan0 acotan sinh0) cosh0 tanhO cotanh0 + Subn 4 5 6 1 2 3 deta O Degrees O Radians Submit! Hint
Explanation / Answer
As per the question when asteroid hit the moon which is at a distance 3.84*10^5 km is producing a red light and light travels with speed 3*10^8 m/s in vacuum(or space) irrespective of wavelength( that is colour of light) of light.
so time =distance/speed
t=(3.84*10*8)/(3*10^8)
=1. 28 sec time for light to reach surface of earth