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ira [324]
3 years ago
9

What is the speed of a train that goes 1000km in 5hours?​

Physics
1 answer:
Marina CMI [18]3 years ago
8 0
1000 divided by 5 is 200
Which means it’s going 200km per hour
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HOW MANY SIGNIFICANT FIGURES ARE THERE IN THE NUMBER 405,000?
Luba_88 [7]

Answer:

Three, but see below.

Explanation:

You can be certain of three, but that may not be true at all. The only way to know for certain is to put it into scientific notation.

4.05 * 10^5 would be three, but other answers are possible. For example

4.050 * 10^5 would have 4.

3 0
3 years ago
Two fans are watching a baseball game from different positions. One fan is located directly behind home plate, 18.3 mfrom the ba
hjlf

Answer:

Δt = 0.315s

Explanation:

To calculate the time difference, in which both fans hear the batterstrike, you first calculate the time which takes the sound to travel the distances to both fans:

t_1=\frac{d_1}{v_s}

t_2=\frac{d_2}{v_s}

d1: distance to the first fan = 18.3 m

d2: distance to the second fan = 127 m

vs: speed of sound = 345 m/s

You replace the values of the parameters to calculate t1 and t2:

t_1=\frac{18.3m}{345m/s}=0.053s\\\\t_2=\frac{127m}{345m/s}=0.368s

The difference in time will be:

\Delta t =t_2-t_2=0.368s-0.053s=0.315s

Hence, the time difference between hearing the sound at the location s of both fans is 0.315s

4 0
3 years ago
An athlete runs around a circular track of radius 50 m and finishes at the same point where he began his journey. His total disp
son4ous [18]

Answer:

Explanation:

His displacement is 0 because he ended up exactly where he started.

5 0
3 years ago
Einstein's theory of general relativity is currently the best explanation of gravity.Why has this theory not been replaced with
alina1380 [7]

Answer:

Option C, It still explains the experimental evidence pertaining to gravity

Explanation:

Please find the attachment

8 0
3 years ago
give an example of how someone may be misjudged about their athletic ability due to diversity in sports (age,ethnicity,gender et
Ipatiy [6.2K]
Here is just a few:

1. white guys cant jump like black guys therefore white guys shouldn't play basketball
2. men are stronger than women so men should weight lift
3.football is a manly sport therefore woman should not play it


*hope this helps(these are just examples I am not expressing my beliefs
7 0
4 years ago
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