Haemoglobin
Explained briefly
Answer:
The steps are made to overcome the negative effect of friction or to increase the friction in the mud.
Explanation:
The following step can be taken when the 4 wheels of our 4 wheeler stuck in the mud are:
(a) First put some sand or rock near the tires to increase the friction to overcome the slipping of tires.
(b) Try to reverse the car and stop and will try to accelerate in the forward direction.
(c) Use the rope, by which one end can be tie to the tree another to the car and then accelerate.
(d) Put some wooden blocks in between the tires which can help.
Answer:
Explanation:
Given
diameter
runner start at (x,y)=(48 m,0 m)
Runner runs around the circle 2.5 times
i.e. he runs two and half rounds
displacement of two rounds is zero so net displacement is of half round
displacement
After 2.5 round he will be towards west direction with respect to origin
so direction of displacement vector is west
Answer:
a) The car was moving at a speed of
b) The negative sign of denotes that the observer is coming towards the police car which is the source of the sound.
c)
Explanation:
Given:
- original frequency of the source,
- speed of the source,
- velocity of the obstacle car be,
- speed of sound,
- observed frequency,
<u>Using the equation from the Doppler's effect:</u>
a)
The car was moving at a speed of
b)
The negative sign of denotes that the observer is coming towards the police car which is the source of the sound.
c)
Now when,
Then,
Using the Doppler's eq.: