The distance between two stations is 180 km. A train takes 2 hours to cover this distance. The speed of the train in m/sec is......please help i rlly need it ....Please

Answer:

Av = 25 [m/s]

Explanation:

To solve this problem we must use the definition of speed, which is defined as the relationship between distance over time. for this case we have.

[tex]Av=\frac{distance}{time}[/tex]

where:

Av = speed [km/h] or [m/s]

distance = 180 [km]

time = 2 [hr]

Therefore the speed is equal to:

[tex]Av = \frac{180}{2} \\Av = 90 [km/h][/tex]

Now we must convert from kilometers per hour to meters per second

[tex]90[\frac{km}{h}]*1000[\frac{m}{1km}]*1[\frac{h}{3600s} ]= 25 [m/s][/tex]

PLEASE HELP. I'LL GIVE BRAINLIEST TO CORRECT ANSWER.
There are several ways to model a compound. One type of model is shown.

4 C's are connected in a line by 3 black lines. The C on the left has 3 H's attached to it each by a black line. The next C has 1 H attached by a black line and 1 O attached by 2 black lines. The next C has 2 H's attached to it by 1 black line each. The last C has 2 H's attached to it by 1 black line each and 1 O attached by a single black line. That O has an H attached to it by 1 black line.
What is the chemical formula for the molecule represented by the model?

CHO
C4H9O2
C4H8O
C3H8O2

I WILL GIVE BRAINLIEST!!!!
The image above shows two opposite forces acting on a rope, what can we say is true about the affect of the forces on the rope?