It great to hear from these guys again. I have many reasons to feel excited about you guys. but what I found not quite right, I think, in this thread is about bullets of foul words coming from different angles ( GetOvaMe and Co ). please, let be civil. Our mission is single and singularity of our mission should be an advantage . please once again. I will try to post questions here everyday. sellah!

Pr0ton:


Now Adedayo516 what have you done to this guy?

He just has severe ADHD...resulting from "maybe" Unhealthy/unstable sleep pattern..... He would come around OK.


Just know yourself.... Don't get distracted... See you in July/August.

horpeyemmi66:

As Mathefaro has noted, this is an A-level/Pre-degree question which is a no no for O-levels/PUTME.

Why you decided to bring this in I wouldn't know but, nevertheless

1. You use this crazy formula
→g(r) = (R/R + H)^2 (acceleration due to gravity of body at a height, not to be mistaken with the gravitational potential of a body at a height V= - GM/ R + H)

→g(r)= (6.4 x 10 ^6/ 6.4 x 10^6 + 6.4 x 10^6)^2

→g(r)= 0.25m/s^2

Normally on the earth, g=10ms^-2, so mass can be gotten from there,

then W=mg
→400N=m x 10
→m=400/10
→m= 40kg

therefore, the weight of the Missile at the new Altitude is
W= mg(r)
W= 40 x 0.25
→W= 10N

2. Am not totally sure about the mass,
→W=mg
→W= d x V x g
→mg= d x v x g

→g cancels out,
→m= d x v
→m= 5500kg/ m3 x m3

→m3 cancels out m3, you are left with

→m= 5500kg

Applying
→g = Gm/R^2

→g= 6.67 x 10^ -11 x 5500/ (6400 x 10^3)^2

→g= 8.95 x 10^-21 m/s^2

3. You get an answer to this later in the morning...

Just wanna chip in something ßoss.
U missed something in ur formula.
g'=g[R/(R+H)]²
Simply solve to get 2.45m/s²
===========> as can be seen from the question, height is quite to large as radius of the earth. So when the height is significantly less than the earth's radius, then this formula will be more convenient
g'=g[1-2H/R]

For no2

Use the formulae g=4πGRp/3.
U already know what acceleration due to gravity at earth's radius should be na(9.8~m/s²) meaning that what u got can't be the answer.
Who re my to undo the latchet of my ßoss

FIGHTING

P0lyMath:



Just wanna chip in something ßoss.
U missed something in ur formula.
g'=g[R/(R+H)]²
Simply solve to get 2.45m/s²
===========> as can be seen from the question, height is quite to large as radius of the earth. So when the height is significantly less than the earth's radius, then this formula will be more convenient
g'=g[1-2H/R]

For no2

Use the formulae g=4πGRp/3.
U already know what acceleration due to gravity at earth's radius should be na(9.8~m/s²) meaning that what u got can't be the answer.
Who re my to undo the latchet of my ßoss

FIGHTING

hahahaha, Sir.PolyMath, who's perfect?

I really appreciated that comment...

That shows I just did it the way I deemed fit...formula from my Pre-degree days, I even forgot to square the denominator.
....Whatever, that question was of the grid jare.

How have you been?...hope you haven't been to London to see the queen?

Me been missing your swags in here baba!

Bhuumhite:

1.B
2.560W
3.A
4.9040KJ
5.10080J
6.B
7.400s
8.200g

Sweet heart that was beautiful one up there but you forgot the 80% in the question.

H= MLf
H = 30 x 336
H= 10080J←What you got, which was a step away from the answer.

As opposed to this, which happens to be correct:

→80%H=336 x 30
→0.8H= 10080
→H= 10080/0.8
→H= 12600J
Missed you dear, you've been swotting sey?

horpeyemmi66:
*PHYSICS | LATENT HEAT 001

5. 80% of the heat supplied to a 30g block of ice at 0°C. Calculate the total heat energy supplied. (Specific latent heat of Ice= 336J/g)

Please modify, incomplete question. Although most people got the message you're trying to pass across.....

Hahaha.. GetOvaMe just took my frd to d Cleaners..

mathefaro:
Please modify, incomplete question. Although most people got the message you're trying to pass across.....

What's implicit in the question??...Do underscore it.

Adedayo516:
He just has severe ADHD...resulting from "maybe" Unhealthy/unstable sleep pattern..... He would come around OK.


Just know yourself.... Don't get distracted... See you in July/August.

Lol! I'll bro. Till July/August.

horpeyemmi66:

What's implicit in the question??...Do underscore it.

Ok! You forgot to mention the effect of the heat supplied. If it just melted the ice completely or raised raised the temperature by some degrees as in:

80% of the heat supplied to a block of ice at 0°C completely melts 30g of ice. Calculate the total heat energy supplied. (Specific latent heat of Ice= 336J/g)

as opposed to this:

80% of the heat supplied to a 30g block of ice at 0°C. Calculate the total heat energy supplied. (Specific latent heat of Ice= 336J/g)

mathefaro:
Ok! You forgot to mention the effect of the heat supplied. If it just melted the ice completely or raised raised the temperature by some degrees as in:

as opposed to this:

Can 210 enter ui for med??
im damn curious

bi0nics:

Can 210 enter ui for med??
im damn curious

Of course, provided you beat the merit cut off. Forget your Jamb score, as only your mark in the post utme determines your admission.

mathefaro:
Ok! You forgot to mention the effect of the heat supplied. If it just melted the ice completely or raised raised the temperature by some degrees as in:

as opposed to this:

Thanks for your cognisance @mathefaro.

During a phase change, latent heat is either giving off or absorbed without an increase or decrease in temperature, look at it this way viz:

Steam →Water →Ice (Latent heat is given off)
Ice →Water →Steam (Latent heat is absorbed/required).

The only thing that changes is the Volume of the substance (which in this case is water), mass remains the same.

When it changes from Solid through Liquid to Gas, it Volume decreases(it contracts) and the mass remains constant.

On the flip side, when water changes to Solid from Gas through liquid, its Volume increases(it expands) but the mass remains the same.

This occurence is clearly seen in the bursting of unlagged water pipes in temperate countries of the world.

In essence, the question only spoke about the change from Ice to Water(H= MC∆Θ, H=MLf). The question never stated any temperature rise in the question, as they know such, isn't feasible.

Albeit, temperature rises immediately before and after a phase change.

Post script: If we had been told the change was from Ice to steam, then one would have done something like this:
H= MLfi + MC∆Θw + MLv + MC∆Θ.
-----------------------------------------------------
Hope this answered your question?

Cc Pr0ton, Jolly94, enry54, PolyMath, mikechibuzor, OGOJNR, thaotech, Bhuumhite(winks*) et al.

Egba mi o!

Umartins1:


Police is part of executive and Basorun was the prime minister

Thank You, i appreciate.

Pr0ton:
someone should hold me from falling oo



But GetOvaMe did you mean Cassyrooy before now

The kind of stuff you like, right? It was just a haze.

GetOvaMe:


Nah, nothing personal.

Infact, Cassy is my guy.. But, I wonder if he is actually reading or he just chats his brains away on NL and whatsapp.

Okay, lemme give him the benefit of doubt, maybe he is right..
Perhaps, his brain took a vacation today.

Good thing is; he is also guning for SOCIOLOGY, and I will only be too happy if he remains this 'prepared'.

You know now, MERIT is less than 60 names, it is imperative that more people fail, so that the greater the chance for the smart ones to get admitted.

This was your only sensible post in all.

I get it bro, i wasn't too clear when i posted those answers and the truth remains that i clearly flunked those questions.

What amaze me the most was how Cassy failing could rouse such arguement. It just clearly state my initial doubts here.

Horpeyemmi66 sorry about whatever might be either said or unsaid between you and G.O.M.

As for you bros, it is personnal and i'll take it so, just that i'll just do off-NL and yeah we are gonna shot hoops over this, when you comeby.

horpeyemmi66:

@Cassyrooy now I see the silly things you were saying there, back on facebook, here you have someone who has swallowed your bait: hook, line and sinker!

You should be dubbed the King of Illusion!
------------------------------------------------------

GetOvame, keep flogging a dead horse...it's of no use, If you can decipher the little labyrinth I wrote up there then you'd understand that Cassyrooy is toying with your seemingly gullible mind.

To some extent I know and can say what some of Cassyrooy's set of Ideologies are...

You called him 'Olodo', I grinned, a fellow who had 250 in the UTME??

Obviously, I think otherwise...

Life is beautiful, you've got Orangutans and Baboons...Diversity is beautiful!

That ain't no stunt.

Pr0ton:


How can you wish someone all these and still call him your guy? The way you approached attacked him was uncalled for. It was way too mean. Though my phone almost slipped off my hand as a result of the uncontrollable laughter his answers caused me, I never ridiculed him. It's normal. I mean no one is perfect. But your approach wasn't it at all. If a little David could kill a mighty Goliathe, and a young damsel could destroy Samson, or if a whole first lady's English could be poor, and a president deficient in WAEC result, Cassyrooy's case shouldn't be a surpise or a point of ridicule. Abeg.

The only sensible post. I appreciate you could see clearly and say it the way it is, i'm just as imperfect as we are known to be, 'HUMANS'.

GetOvaMe:

You think you know him too well, 'coz he fed you a bunch of moronic ideas? That's what he does so he can manipulate morons like you.

Please elaborate.

What if I told you Cassy never did Government in Secondary School and he realy failed those questions?

It's amazing how gullible people can be.

Bravo Cassy! You deserve a medal for pullin' this one son.

My apologies, once more.

Do that when we meet.

Adedayo516:
. ...... This is thread makes me wants to gulp one trailer load of coke..... Big thread warriors everywhere.... .. Pr0ton.. Know your self oooooo.....

Mr Ade nice to have you stop by despite how vast your Coke business has expanded to.

It was an honour to quote you.

Pass my greetings to Marc9, he has a superfan coming over to Unibadan.

horpeyemmi66:

Thanks for your cognisance @mathefaro.

During a phase change, latent heat is either giving off or absorbed without an increase or decrease in temperature, look at it this way viz:

Steam →Water →Ice (Latent heat is given off)
Ice →Water →Steam (Latent heat is absorbed/required).

The only thing that changes is the Volume of the substance (which in this case is water), mass remains the same.

When it changes from Solid through Liquid to Gas, it Volume decreases(it contracts) and the mass remains constant.

On the flip side, when water changes to Solid from Gas through liquid, its Volume increases(it expands) but the mass remains the same.

This occurence is clearly seen in the bursting of unlagged water pipes in temperate countries of the world.

In essence, the question only spoke about the change from Ice to Water(H= MC∆Θ, H=MLf). The question never stated any temperature rise in the question, as they know such, isn't feasible.

Albeit, temperature rises immediately before and after a phase change.

Post script: If we had been told the change was from Ice to steam, then one would have done something like this:
H= MLfi + MC∆Θw + MLv + MC∆Θ.
-----------------------------------------------------
Hope this answered your question?

Cc Pr0ton, Jolly94, enry54, PolyMath, mikechibuzor, OGOJNR, thaotech, Bhuumhite(winks*) et al.

Egba mi o!

You don't seem to get my point, infact, you didn't have to go through all the stress. What I meant was that, the effect of the supplied heat was not stated. Yes, you're right about the fact that since a temperature change wasn't involved/ stated in the question, then it should be latent heat-related, but then, the heat supplied might not be enough to completely melt the 30g of ice. And since calculation can't be made on mere assumptions, I feel that little detail must be added for clarity sake.
However, if you think otherwise, I rest my case and it's all good. There's no point creating an argument over it.
#Shalom

mathefaro:
You don't seem to get my point, infact, you didn't have to go through all the stress. What I meant was that, the effect of the supplied heat was not stated. Yes, you're right about the fact that since a temperature change wasn't involved/ stated in the question, then it should be latent heat-related, but then, the heat supplied might not be enough to completely melt the 30g of ice. And since calculation can't be made on mere assumptions, I feel that little detail must be added for clarity sake.
However, if you think otherwise, I rest my case and it's all good. There's no point creating an argument over it.
#Shalom

At least more light has been shed by you...no offences taken though!

cassyrooy:
Mr Ade nice to have you stop by despite how vast your Coke business has expanded to.

It was an honour to quote you.

Pass my greetings to Marc9, he has a superfan coming over to Unibadan.

Hahaha guy... u self get your own for body oo.. must u state his type of business?

horpeyemmi66:

At least more light has been shed by you...no offences taken though!

Thumbs up

cassyrooy:
Mr Ade nice to have you stop by despite how vast your Coke business has expanded to.

It was an honour to quote you.

Pass my greetings to Marc, he has a superfan coming over to Unibadan.

Vast...I retired... Believed to be a stakeholder now...

I hope you're preparing hard though... You would need all the handwork.. Every single bit you put in would go a long way..


Greetings??... Never meet him...not planning on doing so.

Pr0ton:


Lol! I'll bro. Till July/August.

Watching.... You can always DM me... Always ☺

cassyrooy:
Welcome back sweetie, how has it been? Hope no stress ni?

nah none. How av u been?

cassyrooy:
This was your only sensible post in all.

I get it bro, i wasn't too clear when i posted those answers and the truth remains that i clearly flunked those questions.

What amaze me the most was how Cassy failing could rouse such arguement. It just clearly state my initial doubts here.

Horpeyemmi66 sorry about whatever might be either said or unsaid between you and G.O.M.

As for you bros, it is personnal and i'll take it so, just that i'll just do off-NL and yeah we are gonna shot hoops over this, when you comeby.

Cut the bullsh*t, paleface!

Your failing caused what?... Oh! Don't flatter yourself.

Your guy led himself into a cul-de-sac when he tried to take a cheap shot at me by calling me 'gullible'.

Apparently, that wasn't a very clever decision.

If he wanted to diss me he should have thought of better and stronger adjectives, not trying to use clichés that make him look like a hobo with spiderwebs up his skull.

Like I said, I would normally have ignored him and allow him wallow in self adoration. But, you know i've never been known to be a bastion of temperance.
Besides I was bored.

Dude's got no imagination. Next time pal, try to get a knowledge 'bout something before flexing your opinion muscles. Would save you a whole lot of self -embarrassment.

But, then again, this one is on you, Cassy. You know I know all your shady schemes, you could fool anyone but me. After all, I sired you!

I'm glad you admitted to flunking those questions. Good boy!

What were you saying 'bout shooting hoops?

I'd love to see you try.

horpeyemmi66:

Sweet heart that was beautiful one up there but you forgot the 80% in the question.

H= MLf
H = 30 x 336
H= 10080J←What you got, which was a step away from the answer.

As opposed to this, which happens to be correct:

→80%H=336 x 30
→0.8H= 10080
→H= 10080/0.8
→H= 12600J
Missed you dear, you've been swotting sey?

if it were "swotting",it would av been gud,....,
...i was wondering wat i wud do with dat 80%,didnt rili understand d qst.....tnks fr d correction

GetOvaMe:


Cut the bullsh*t, paleface!

Your failing caused what?... Oh! Don't flatter yourself.

Your guy led himself into a cul-de-sac when he tried to take a cheap shot at me by calling me 'gullible'.

Apparently, that wasn't a very clever decision.

If he wanted to diss me he should have thought of better and stronger adjectives, not trying to use clichés that make him look like a hobo with spiderwebs up his skull.

Like I said, I would normally have ignored him and allow him wallow in self adoration. But, you know i've never been known to be a bastion of temperance.
Besides I was bored.

Dude's got no imagination. Next time pal, try to get a knowledge 'bout something before flexing your opinion muscles. Would save you a whole lot of self -embarrassment.

But, then again, this one is on you, Cassy. You know I know all your shady schemes, you could fool anyone but me. After all, I sired you!

I'm glad you admitted to flunking those questions. Good boy!

What were you saying 'bout shooting hoops?

I'd love to see you try.

So you guys used my shortcomings as an avenue to tease the feelings you both bear, bros just come over today lets end this, the way we used to.



Horpepeyyemi66 that cost me a price(what i told you on Facebook) but this was never one of them, true i can do anything i want but i select the kind of things i do, not this too easy ones and only when necessary.

GetOvaMe:


Cut the bullsh*t, paleface!

Your failing caused what?... Oh! Don't flatter yourself.

Your guy led himself into a cul-de-sac when he tried to take a cheap shot at me by calling me 'gullible'.

Apparently, that wasn't a very clever decision.

If he wanted to diss me he should have thought of better and stronger adjectives, not trying to use clichés that make him look like a hobo with spiderwebs up his skull.

Like I said, I would normally have ignored him and allow him wallow in self adoration. But, you know i've never been known to be a bastion of temperance.
Besides I was bored.

Dude's got no imagination. Next time pal, try to get a knowledge 'bout something before flexing your opinion muscles. Would save you a whole lot of self -embarrassment.

But, then again, this one is on you, Cassy. You know I know all your shady schemes, you could fool anyone but me. After all, I sired you!

I'm glad you admitted to flunking those questions. Good boy!

What were you saying 'bout shooting hoops?

I'd love to see you try.

See, I've got better things to do than exchange words with a clown who just writes gibberish and just Orubebes around trying to pull weight.

I hope this your new found enterprise blossoms!.

@Cassyrooy, I get the gist...we'd speak more about the Orangutan on facebook.

Au revoir

Bhuumhite:
if it were "swotting",it would av been gud,....,
...i was wondering wat i wud do with dat 80%,didnt rili understand d qst.....tnks fr d correction

You welcome jare.

So if not swotting, what then have you been up to?

Perhaps modelling??