Ask question

Ask question

All categories

Genrish500 [490]

3 years ago

9

What are the point of similarities and differences between electrostatic force magnetic force and gravitational force

2 answers:

Feliz [49]3 years ago

6 0

Electrostatic forces are much greater than gravitational forces. However, Gravitational forces are always attractive in nature. :)

Hope it helps you.

12345 [234]3 years ago

5 0

Answer:

They are all field force

Explanation:

they are confined/restricted to a particular point(i.e they can only occur in their domain)

Difference are; Electrostatic force is produced from electricity, Magnetic force is produced from magnet, and gravitational force is produced by gravity (space)

You might be interested in

Why are mercury and the earths moon so cratered?

Ksenya-84 [330]

They are cratered because of meteoroids, neither of them have an atmosphere to disintegrate the meteors, and neither of them have water to erode the craters.

8 0

3 years ago

Please help me with my science

gavmur [86]

Answer:

can you type it

Explanation:

5 0

3 years ago

Read 2 more answers

How much power is used by car when it applies 40,000 J of work over a 5.6 second interval

Tcecarenko [31]

Answer:

7142.86W

Explanation:

Given parameters:

Work done by brake = 40000J

Time taken = 5.6s

Unknown:

Power used by car = ?

Solution:

Power can be defined as the rate at which work is done. It is mathematically expressed as;

Power = $\frac{work done }{time taken}$

Now input the variables;

Power = $\frac{40000}{5.6}$ = 7142.86W

8 0

3 years ago

An aluminum wire is held between two clamps under zero tension at room temperature. Reducing the temperature, which results in a

Blababa [14]

Answer:

$\frac{\Delta L}{L} =5.37\times 10^{-4}$

Explanation:

Given:

cross sectional area of the wire, $A=5.75\times 10^{-6}\ m^2$

density of aluminium wire, $\rho=2.7\times 10^3\ kg.m^{-3}$

young's modulus of the material, $E=7\times 10^{10}\ N.m^{-2}$

wave speed, $v=118\ m.s^{-1}$

<u>We have mathematical expression for strain as:</u>

$\frac{\Delta L}{L} =\frac{\sigma}{E}$ ...............................(1)

and since, $\sigma =\frac{T}{A}$

where, T = tension force in the wire

equation (1) becomes:

$\frac{\Delta L}{L} =\frac{T}{A.E}$ ............................(2)

<u>Also velocity ofwave in tensed wire:</u>

$v=\sqrt{\frac{T}{\mu} }$ ...................................(3)

where: $\mu=$ linear mass density of the wire

$\therefore \mu=\rho \times A$

Now, equation (3) becomes

$v=\sqrt{\frac{T}{\rho \times A} }$

$T=v^2.\rho \times A$ ............................(4)

Using eq. (2) & (4) for tension T

$v^2.\rho \times A=A.E\times \frac{\Delta L}{L}$

$\frac{\Delta L}{L} =\frac{v^2.\rho}{E}$

putting the respective values

$\frac{\Delta L}{L} =\frac{118^2\times 2.7\times 10^3}{7\times 10^{10}}$

$\frac{\Delta L}{L} =5.37\times 10^{-4}$

6 0

3 years ago

What type of cars are electric and what kind of battery do they have

Kaylis [27]

lithium-ion battery.

hopefully this helps

3 0

4 years ago