3.9. How long will a boy sitting near the window of a train travelling at 36km/h see a train passing by in the opposite direction with a speed of 18km/h. The length of the slow-moving train is 90 m.
Solved
Show answers
More tips
- F Food and Cooking Is Bacon Good for You?...
- S Style and Beauty Discover the Art of Nail Design: How Do You Paint Your Nails?...
- P Philosophy How to Develop Extrasensory Abilities?...
- O Other Everything You Need to Know About Kudyabliks...
- C Computers and Internet The Twitter Phenomenon: What it is and How to Use it...
- C Computers and Internet How to Choose a Laptop: Expert Guide and Tips...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
Answers on questions: Physics
- P Physics What is meant by global warming? a. it is the theory that water vapor increases earth s temperature through clouds. b. it is the theory that earth is warming due to greenhouse...
- P Physics What is the significant figure of 0.6...
- P Physics What hits the atmosphere faster than 90,000 miles per hour a.) comets b.)meteors c.)meteoroids...
- P Physics Acar traveling at a velocity of 2 m/s undergoes an acceleration of 4.5 m/s^2 over a distance of 340 m. how fast will it be going after the acceleration?...
- P Physics The steam rising off of a pot of boiling water, or the smoke and heat rising off of a lit candle wick, shows air moving in currents. a conduction b convection c radiation...
- P Physics The table below shows information about pairs of charged spheres. In which pair do the spheres exert the greatest electrical force on each other?...
- P Physics simultaneously drop a coin and a crupled-up piece of paper from the same height. if the effects of air resistance are negligible, both will have the some motion and hit the floor...
- M Mathematics Find UT and CAV please helpppp...
- E English PLEASE HELP THIS IS A MONTH BEHIND ALL BECAUSE I CANT GET THIS QUESTION Is George Orwell right about people and the way they handle power? In your own words, explain what Animal...
- C Chemistry Solid carbon reacts with gaseous oxygen to form gaseous carbon dioxide. (Write the formulas for the substances and phases in the order given above.)...
Ответ:
please give me brainlist and follow
Explanation:
Given:
The speed of the train ,which the boy is observing(t) = 18 km/hr
[ Now , to convert km/hr into m/s we have to multiply by 5/18 ]
So,
speed of the observed train = 18× 5/18
☞ 05 m/s
Also, The speed of the train in which the boy is sitting is(s) = 36 km/hr
Speed in m/s will be = 36 × 5/18
☞ 10 m/s
Also, The Length of the Train = 90m
Therefore:.
The speed of the train is given (expressed) by
= > speed \: = \frac{distance}{time}=>speed=
time
distance
= > time \: = \frac{distance}{Velocity }=>time=
Velocity
distance
Where,
velocity = Realtive velocity of both trains
Distance = Length of the train
So, The above mentioned formulae can also be written as :
= > time = \frac{length}{relative \: velocity}=>time=
relativevelocity
length
Here,
Relative velocity will be :
☞. s -(-t)
☞. 10 -(-5)
☞.15 m/s = Relative velocity
Now , Finally putting the values in the formulae respectively
■ Time = 90/15
■ Time = 6 sec [Answer]
Ответ:
My fav brand: Gucci. Food:Big Mac :). Rapper: lil tjayyy.
Explanation: