**Answer:10.961 N**

**Explanation:**

Given

mass flow rate in bucket is

mass of bucket

velocity of sand

Force acting on bucket due to incoming of sand is given by

Now weight of sand and bucket when 0.55 kg sand is Present in bucket

Total reading on scale will be addition of weight and force acting by incoming sand

It is called the "nucleus". most of its weight is concentrated at nucleus. It is held by the "strong nuclear force",because of the repulsive nature of both like charges of protons.

**Answer:0.931 s**

**Explanation:**

Given

initial speed=1.1 m/s

height(h)=28 m

after 0.5 sec blue ball is thrown upward

Velocity of blue ball is 24.4 m/s

height with which blue ball is launched is 0.9 m

Total distance between two balls is 28-0.9=27.1 m

Let in t time red ball travels a distance of x m

--------1

for blue ball

-----2

Add 1 & 2

we get

t=0.931 s

after 0.931 sec two ball will be at same height

1. I don't see a graph

2. It could be because a liquid could be evaporating in the process

3. It could be that the liquid is getting colder

4. 1 liquid is medium and moving a the normal pace

**Answer:**

Distance in mm will be 0.3718 mm

**Explanation:**

We have given charge surface charge density

We know that electric field due to surface charge density is given by

We have given potential difference V = 105 volt

We know that potential difference is given by

So