Stratosphere is THE LAYER OF ATMOSPHERE THAT PROTECTS US because it contains OZONE. Ozone is also a layer that protects us from the direct rays/ UV RAYS of the SUN
Explanation:
everything can be found in the picture
Answer:
t = 0.4 s
Explanation:
Given that,
The speed of sound on steel is about 5000 m/s.
A friend of yours, 2000 m away, strikes a railroad track which you have your ear on.
We need to find the time after she strikes it will the sound arrive. Let the time is t. We know that,
Speed = distance/time
So,
So, the required time is 0.4 seconds.
Answer:
Greatest pressure on the ground is 1962 Pa
Explanation:
As we know that pressure is ratio of force and area
so we can write its equation as
now here we need to find the greatest pressure on the ground
here force is due weight of the object and area must be minimum in contact with the ground
F = mg
Now minimum area of contact with the ground is
now maximum pressure is given as
Answer:
Just convert the answers down, plug in the numbers and move the decimal to where it needs to be equal to.