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babymother [125]
3 years ago
8

If youre walking from point a to b, the magnitude of your displacement will always be equal or less than or greater than your di

stance?
Physics
1 answer:
xenn [34]3 years ago
3 0

The magnitude of your displacement can be equal to the distance you covered, or it can be less than the distance you covered.  But it can never be greater than the distance you covered.

This is because displacement is a straight line, whereas distance can be a straight line, a squiggly line, a zig-zag line, a line with loops in it, a line with a bunch of back-and-forths in it, or any other kind of line.

The straight line is always the shortest path between two points.

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Evaluate A car company wants to build a wind-powered car that converts 100 percent of the mechanical energy in the wind to the m
lorasvet [3.4K]

Answer:

There's one or two reasons, depending on what is meant by "wind-powered car".

The first reason is that it's impossible for any transfer of energy to be 100% efficient.  There will always be frictional losses.

Secondly, if the company means that they want to attach a wind turbine to the car so that the car is powered by the same wind that it generates, that violates the conservation of energy.

4 0
3 years ago
Squids propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity
Musya8 [376]

Answer:

v_squid = - 2,286 m / s

Explanation:

This exercise can be solved using conservation of the moment, the system is made up of the squid plus the water inside, therefore the force to expel the water is an internal force and the moment is conserved.

Initial moment. Before expelling the water

          p₀ = 0

the squid is at rest

Final moment. After expelling the water

         p_{f} = M V_squid + m v_water

         p₀ = p_{f}

          0 = M V_squid + m v_water

           c_squid = -m v_water / M

The mass of the squid without water is

            M = 9 -2 = 7 kg

let's calculate

           v_squid = 2 8/7

           v_squid = - 2,286 m / s

The negative sign indicates that the squid is moving in the opposite direction of the water

8 0
3 years ago
Hi! Please help me!!!!! I don’t understand this question at all. If you could please explain that would be so helpful! Thanks!
inessss [21]

Answer:

I would say the stone is being used as a fulcrum.

Explanation:

An example of a fulcrum is the triangle thing under a seesaw. I don't know for sure if that's the right answer, but I would strongly suggest it. Hope I helped,  have a nice day :)

7 0
3 years ago
Read 2 more answers
A=?<br> m =3.4 kg<br> F = 7kN<br> a=f/m
Mrac [35]

Answer:

a=4,

m=7

F=

a=7so??sl

Explanation:

xddddddddddddd

6 0
3 years ago
An electron and a proton are each placed at rest in a uniform electric field of magnitude 560 N/C. Calculate the speed of each p
Butoxors [25]

Answer:

The speed of electron is v=4.52\times 10^6\ m/s and the speed of proton is 2468.02 m/s.

Explanation:

Given that,

Electric field, E = 560 N/C

To find,

The speed of each particle  (electrons and proton) 46.0 ns after being released.

Solution,

For electron,

The electric force is given by :

F=qE

F=1.6\times 10^{-19}\times 560=8.96\times 10^{-17}\ N

Let v is the speed of electron. It can be calculated using first equation of motion as :

v=u+at

u = 0 (at rest)

v=\dfrac{F}{m}t

v=\dfrac{8.96\times 10^{-17}}{9.1\times 10^{-31}}\times 46\times 10^{-9}

v=4.52\times 10^6\ m/s

For proton,

The electric force is given by :

F=qE

F=1.6\times 10^{-19}\times 560=8.96\times 10^{-17}\ N

Let v is the speed of electron. It can be calculated using first equation of motion as :

v=u+at

u = 0 (at rest)

v=\dfrac{F}{m}t

v=\dfrac{8.96\times 10^{-17}}{1.67\times 10^{-27}}\times 46\times 10^{-9}

v=2468.02\ m/s

So, the speed of electron is v=4.52\times 10^6\ m/s and the speed of proton is 2468.02 m/s. Therefore, this is the required solution.

6 0
3 years ago
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