Answer:
towards the mass 
Explanation: We know that the gravitational force is a long range force which is always attractive in nature.
Given that:
- mass

- mass

- mass

The masses are positioned on X-axis at the following points:
- Position of mass

- Position of mass

- Position of mass

Mathematically:
<em>Gravitational force on mass </em>
<em> due to mass </em>
<em> is given by </em>
...................(1)
- where:
= the radial distance between masses
&
=3
Similarly, g<em>ravitational force on mass </em>
<em> due to mass </em>
<em> is given by </em>
............................(2)
- where:
= the radial distance between masses
&
=3
Now, put the respective values in the above equations.


Again,


∵Mass
is in the middle of the masses
&
therefore the forces
&
will attract them in radially opposite direction.
∴
towards the mass 
Answer:
Explanation:
3. The word circuit means "go around", therefore a circuit is a pathway or closed path around which electricity (or water) flows.
4. Electrons flowing through a wire can be compared to water flowing through a hose. Once the flow of electrons or water is going, work, is performed.
5. You would get shocked in a bumper car by touching the floor and the ceiling at the same time. This means you are completing the circuit allowing electricity to flow.
6. Electricity from a wall outlet has enough energy to stop your
heart.
7. Electricity is the flow of electrons, because electrons move or jump from atom to atom.
8. Materials that allow electrons to move easily from atom to atom are called conductors.
9. Materials that do not allow electrons to flow easily are called insulators.
10. Semi- conductors are materials that are somewhere in between
.
11. Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.
12. Current (amps
) is the amount of electricity and is compared to the amount of water in a hose
.
13. Watts (power) is the term for work performed by electricity.
Answer:
17.3 m
Explanation:
Given that,
Mass of a hammer is 0.58 kg
Velocity with which the hammer slides is 6.69 m/s at constant speed.
The roof makes an angle of 18 ◦ with the horizontal, and its lowest point is 18.2 m from the ground. We need to find the horizontal distance traveled by the hammer between the time is leaves the roof of the house and the time it hits the ground. Firstly, we will find the time taken by the hammer when it reaches ground in vertical direction.

Putting all the values,

Neglecting negative value,
To find horizontal distance, multiply 2.72 s with the horizontal component of velocity.

C.Earth is the largest and most dense of the terrestrial planets
A) The biggest astronomical object is the Universe, which contains billions of galaxies among which there is the Milky Way.
The Milky Way contains thousands of planetary systems, among which the Solar System.
The Solar System contains many <span>planets <span>(but only one star, the Sun)</span>,</span> among which there is Earth.
Therefore you can label:
A = Universe, B = Milky Way, C = Solar system, D = Earth
b) Given what we said before, you could label D also any other planet in the Solar System, therefore you can choose among Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune.