I belive it could be 6.5 but I could be wrong
Answer:
The pressure will be increased
Explanation:
As you move toward the interior of the earth the pressure is going to increase, which will support the column of earth above the person who moves towards the interior.
This column can be calculated by means of the following expression
P = d*g*h
where:
d = density of the earth [ kg/m^3]
g = gravity = 9.81 [m/s^2]
h = column of earth [m]
As we can see the pressure depends on the height or depth as we move into the earth, as well as the density of the Earth.
Answer:
A. an increase in the height of the sound wave
Explanation:
Volume of the sound is measured by its intensity
So here we know that
intensity is directly depends on the square of the amplitude of the sound wave
so here as intensity depends on the loudness of the sound given as
so here as the loudness of sound will increase then the intensity will increase and hence the amplitude of the sound will also increase
So correct answer will be
A. an increase in the height of the sound wave
Explanation:
everything can be found in the picture
Answer:
Explanation:
First we have to find the time required for train to travel 60 meters and impact the car, this is an uniform linear motion:
The reaction time of the driver before starting to accelerate was 0.50 seconds. So, remaining time for driver is 1.5 seconds.
Now, we have to calculate the distance traveled for the driver in this 0.5 seconds before he start to accelerate. Again, is an uniform linear motion:
The driver cover 10 meters in this 0.5 seconds. So, the remaining distance to be cover in 1.5 seconds by the driver are 35 meters. We calculate the minimum acceleration required by the car in order to cross the tracks before the train arrive, Since this is an uniformly accelerated motion, we use the following equation: