Answer:
<em>1. 1.48 W/</em>
<em></em>
<em>2. 4.93 x </em>
<em></em>
<em>3. 33.3 V/m</em>
<em>4. 1.11 x </em>
<em></em>
Explanation:
The step by step explanation to the question is contained in the attached images;
According to the universal law of gravitation, all particles attract every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. So the answer here would be,
a. everything has a gravitational force because everything has mass.
Answer:
Maximum height the atmosphere pressure can support the
water=10.336 m
Explanation:
We know that ,

Case 1 - Mercury in the tube

Case 2 - Water in the tube

Since atmospheric pressure is same
.
or, 

∴ 
Hence height of the water column =10.336 m
Answer:
The acceleration is 2.448 meters per square second and is vertically upward.
Explanation:
The Free Body Diagram of the plastic ball in the liquid is presented in the image attached below. By Second Newton's Law, we know that forces acting on the plastic ball is:
(1)
Where:
- Buoyant force, measured in newtons.
- Mass of the plastic ball, measured in kilograms.
- Gravitational acceleration, measured in meters per square second.
- Net acceleration, measured in meters per square second.
If we know that
,
and
, then the net acceleration of the plastic ball is:


The acceleration is 2.448 meters per square second and is vertically upward.
Answer:

Explanation:
As per given figure let say the tip of the shadow is at distance "x" from the base of the lamp
so here we have

so we have


now we have


