Given :
Pressure, P = 0.4 lb/in².
Depth, h = 42 in.
To Find :
The density of a liquid.
Solution :
Pressure at height h of a liquid of density is given by :
....1)
Here, g = 386.04 in/s²( acceleration due to gravity )
Putting all values in equation 1, we get :
Hence, this is the required solution.
Answer:
1)
2)
3)
Explanation:
Given:
width of river,
speed of stream with respect to the ground,
speed of the swimmer with respect to water,
<u>Now the resultant of the two velocities perpendicular to each other:</u>
<u>Now the angle of the resultant velocity form the vertical:</u>
- Now the distance swam by the swimmer in this direction be d.
so,
Now the distance swept downward:
2)
On swimming 37° upstream:
<u>The velocity component of stream cancelled by the swimmer:</u>
<u>Now the net effective speed of stream sweeping the swimmer:</u>
<u>The component of swimmer's velocity heading directly towards the opposite bank:</u>
<u>Now the angle of the resultant velocity of the swimmer from the normal to the stream</u>:
- Now let the distance swam in this direction be d'.
<u>Now the distance swept downstream:</u>
3)
Time taken in crossing the rive in case 1:
Time taken in crossing the rive in case 2:
Answer:
the car has kenotic energy is 2500J
Lead, because it is the most dense, so sound will move through it the fastest.
To convert ppm to percent, you divide the ppm by 10,000.
x / 10000 = x%
So, 11 ppm is 11/10000 or 0.0011%.