Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Cosmic Distances:
If we asked you what the distance between Delhi and Kanyakumari is, you would say that it is roughly 3000 km. Another way of answering the question would be that a train takes.about 50 hours to cover the distance. And if we know the average speed of a train, we would get a fairly good idea of the distance. The dimensions of the universe are so large that using familiar units of distance like kilometres would make little sense, Therefore, cosmic distances are measured in'"ight years". One light year is the distance travelled by light. in one year. Now, light travels, about 300,000 kilometres in one second, i.e. its speed is 3 X 105 kms. At this sped it can travel seven times around the Earth in one second. A year has about 3X 107seconds (i.e. about 30 million seconds) in it. Therefore, the distance light travelsin one year is about
3 X 105m/s X 3 X 107s=9 X 102km, i.e. about nine trillion kilometres.
This unit of length is called a light year, It measures not time but distances, enormous distances. Space and time are interwoven. We cannot look out into space without looking back into time. If we see a galaxy a billion light years away, we are seeing it theway it was a billion years ago. Thus, the distance in units of light years also tells us how far back into time we are looking.
Some potato cores were weighed and then placed into a dilute sugar solution. After 2 hours, they were taken out of the solution, dried on a paper towel and weighed again. The mass
FIRST AID TREATMENT OF LOCALIZED INJURIES : So far, we have seen main life-saving functions of first aid. Let us discuss the task of controlling some other injuries so that they d
An experiment with a floating candle Put a nail in the lower end of a candle. The nail should be just the right weight to make the candle float with its top a little above the
assignment
Q. What are the preliminary steps involved during preparation of raw materials? Preliminary steps involved during preparation of raw materials include cleaning, peeling, cuttin
Q. List the important rice products? The important rice products are flaked rice, expanded rice, popped rice, instant rice, rice flour, rice starch etc.
Explain Basophils - Types of White Blood Cells They form only 0.05% of the leukocytes. They release histamine that plays a major role in inflammatory reactions. Basophils also
What is ethics
glutamic acid standard estimation protocol
Saponification value of fats and oils
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd