how tf is anyone supposed to tell what this is (1 Viewer)

[kkk579]

 

[Aeonium]

View attachment 43966

is it c?

 

[kkk579]

is it c?

its D

 

[kkk579]

Also for this q for part a you would say V=60 right since the particle only travels 3cm so you scale that accordingly to the potential diff [(100/5)×3=60] but how come for part c you let V=100 and D=0.05m? Because its released from position Y and travels towards the upper parallel plate so why doesnt V=80 and D=0.04m?

 

[harperissleepy]

View attachment 43966

what subject is this

 

[kkk579]

what subject is this

physics

 

[Gods_Spear]

its D

Makes sense, but is a very wacky question

 

[liamkk112]

View attachment 43966

it’s not c because it should be diffraction not dispersion, dispersion is to do with prisms and separating light into individual wavelengths

ig it’s d because refraction causes waves to slow down, which also will cause them to bend (hence how they are bending around the corner even though that’s diffraction)
silly question tbh

 

[liamkk112]

Also for this q for part a you would say V=60 right since the particle only travels 3cm so you scale that accordingly to the potential diff [(100/5)×3=60] but how come for part c you let V=100 and D=0.05m? Because its released from position Y and travels towards the upper parallel plate so why doesnt V=80 and D=0.04m?View attachment 43967

if for part C u used E = V/m, voltage is the total potential difference which determines how strong the E field is. whereas when calculating part A you’re interested in the change in potential between two points, hence why it would be 60V difference (eg point A is at 110V, point B is at 170V, so change in potential is 60V)

 

[wizzkids]

Whoever wrote that question about properties of water waves, they should be banned.
"Dispersion" is not caused by "waves bending around the edges of an object". That is a description of diffraction. "Superposition" is not caused by "waves bending near an object".
Dispersion is a change in the speed of waves due to a change in wavelength. A dispersive medium will cause a mixture of waves to separate according to their wavelength. For example, Crown glass is a dispersive medium, and a Crown glass prism causes white light to be dispersed into its separate colours. That question is rubbish.

 

[wollongong warrior]

Whoever wrote that question about properties of water waves, they should be banned.
"Dispersion" is not caused by "waves bending around the edges of an object". That is a description of diffraction. "Superposition" is not caused by "waves bending near an object".
Dispersion is a change in the speed of waves due to a change in wavelength. A dispersive medium will cause a mixture of waves to separate according to their wavelength. For example, Crown glass is a dispersive medium, and a Crown glass prism causes white light to be dispersed into its separate colours. That question is rubbish.

hence, those options are not correct

 

[iloveeggs]

Whoever wrote that question about properties of water waves, they should be banned.
"Dispersion" is not caused by "waves bending around the edges of an object". That is a description of diffraction. "Superposition" is not caused by "waves bending near an object".
Dispersion is a change in the speed of waves due to a change in wavelength. A dispersive medium will cause a mixture of waves to separate according to their wavelength. For example, Crown glass is a dispersive medium, and a Crown glass prism causes white light to be dispersed into its separate colours. That question is rubbish.

thanks i thought i was stupid af for not understanding

 

[kkk579]

shouldnt this be D not A

 

[wollongong warrior]

shouldnt this be D not AView attachment 43983

No. Read the second part of the question
The plane is supposed to angle itself to counteract the 100km/h crosswind from the east
Meaning sin(theta) = 100/300
Theta = 19.5

 

[kkk579]

No. Read the second part of the question
The plane is supposed to angle itself to counteract the 100km/h crosswind from the east
Meaning sin(theta) = 100/300
Theta = 19.5

Ohhh shit i accidentally put the 300 on the north part thats why, alr thank you