Answer:
Downwards
Explanation:
Using Fleming's right hand rule, where the middle finger represents the negative charge moving in the south to north direction, the fore finger represents the magnetic field which points in the east to west direction.
If we are to follow this orientation and place the thumb, middle finger and fore-finger at right angles to each other, the thumb represents the direction of the magnetic force on the charge.
In this case, the magnetic force points downwards after setting the other orientations of the magnetic field and the negative charge's direction.
Answer:

Explanation:
Given:
- diameter of hose pipe,

- diameter of nozzle,

- volume flow rate,

<u>Now, flow velocity in hose:</u>



<u>Now, flow velocity in nozzle:</u>



We know the Bernoulli's equation:

when the two points are at same height then the eq. becomes




Answer:
Sink
Explanation:
The normal density of water is 1 g/cm3. Since the rock has a higher density of 1.72g/cm3, it will sink in water.
Answer:
wash your hands and social distance
Explanation: