Pop Quiz For Leaving Cert

*Angel*

Oh sorry, here you are:

Applied Maths, Hydrostatics:

What quantity of water must be mixed with 1 litre of milk to reduce its relative velocity from 1.03 to 1.02?

dudara

What is a latent heat?

*Angel*

dudara wrote:

What is a latent heat?

I'm sure there is a more advanced definition for chemistry but I only do physics so:

Latent heat is the energy needed to break the bonds between molecules when a substance is changing state, there is no change in temperature.

Camogie Playa

Define a synapse?
What are the different parts of the brain?
Define broad money supply?

*Angel*

*Angel* wrote:

Oh sorry, here you are:

Applied Maths, Hydrostatics:

What quantity of water must be mixed with 1 litre of milk to reduce its relative velocity from 1.03 to 1.02?

Damn you picked the other question I don't do.

*Angel*

Deleted User wrote:

Damn you picked the other question I don't do.

Ok Moments of Inertia:

Give the equation for the moment of inertia of a body of mass M.

D-Generate

*Angel* wrote:

Oh sorry, here you are:

Applied Maths, Hydrostatics:

What quantity of water must be mixed with 1 litre of milk to reduce its relative velocity from 1.03 to 1.02?

0.5 litres of water.

*Angel* wrote:

Give the equation for the moment of inertia of a body of mass M.

I presume you mean Md^2 but if not then what shape are we talking about?

Def of Latent Heat I have is
The Heat Energy required to change a mass from one state/form to another without changing its temperature.

Question
Define the Newton.

*Angel*

D-Generate wrote:

0.5 litres of water.

Yep

D-Generate wrote:

I presume you mean Md^2 but if not then what shape are we talking about?

D-Generate wrote:

Question
Define the Newton.

The newton is the force that gives to a mass on 1kg an acceleration of 1m/s^2

Question:
Physics, what are isotopes?

cessy

atoms of an element that have the same number of protons but different number of neutrons are isotopes of that element
question,physics
wat is an elctrostatic precipitator used for?

Gone West

cessy: one use is to remove dirt and carbon from the chimney stacks in large factories.

*Angel*

and question fuzzy?

Gone West

This is actually a serious question...
ok. electromagnetic waves/light is/are the fastest thing in the universe, right?... There is no faster way to communicate than 3x10^8 M/S.
Suppose that light takes 5 minutes to reach pluto from earth.
If I got a big huge broom and reached all the way to pluto with it.
Then i jerk it back a little, didn't I just send information to pluto instantly?
--
hypothetically, in theory why wouldn't this happen?
(don't say something stupid like "oh how would you get a pole long enough to reach pluto?")

Then i jerk it back a little

What does this mean? Jerk it back from where to where?

Sorry if it's an obvious answer. I'm very tired today.

*Angel*

WILD GUESS

It would be physically impossible to shift a pole of such magnitude...

and no it would not be instantaneous, and the time taken to send information from earth to pluto along the pole would take longer than 5 minutes...nothing is faster than the speed of light.

it would not be instantaneous

That's what I was thinking. :rolleyes:

Ask away Angel!

*Angel*

Ok well I'm still not sure if I'm right, but anyway

Maths:

log9X = 3/2

solve for X, btw the 9 is the base.

27 perhaps?

*Angel*

Yep! Go ahead.

Ok, staying with maths:

Solve cos4x + cos2x = cosx, 0<x<360.

*Angel*

X = 20, 90, 340 degrees

Tech Drawing:

Conics, if given the two focal points and major axis of an ellipse, how would you find the tangent (with proper construction) at 60 degrees to the ellipse?

I have the worst look. I'm not doing Conics or Roofs.

(BTW, the answer was 20, 90, 100, 140, 220, 260, 270, and 340. But I'll let you away with it.............this time! )

*Angel*

Deleted User wrote:

I have the worst look. I'm not doing Conics or Roofs.

(BTW, the answer was 20, 90, 100, 140, 220, 260, 270, and 340. But I'll let you away with it.............this time! )

hmm my bad...

Tech Drawing (I still can't believe you're not doing roof it's p!ss easy) anyway.

OK, solids in contact, you have an upright cone and a point of contact on the cone, you are told to draw a sphere on the horizontal plane in contact with this point, what do you do?

I'm gonna leave the simple parts out:

Draw a sphere on either side of the cone (with respect to the p.o.c), in plan swing them around, where they meet draw sphere, yada yada yada.

Accountancy:
Give 3 reasons why a cash flow statement is prepared.

*Angel*

Deleted User wrote:

Accountancy:
Give 3 reasons why a cash flow statement is prepared.

Btw I don't actually do or have ever done accounting, but I thought I'd try.

1. It shows how the company/person used the money (expenses)
2. Shows whether company/person is breaking even, gaining/losing money
3. -

sorry for the pathetic guesses...

They're very good guesses I must admit! But they're wrong unfortunately.

randomfella

Why a business prepares a cash flow forecast?

To ensure that it has enough cash inflows to meet cash outflows
To find out when it is going to have surpluses or deficits so that it can deal with them.
To be used as proof when applying for a loan.


Last reason was bull**** i think. i do business but i wasn't sure whether a cash flow statement and cash flow forecast were the same thing

Question - Business - What are the benefits of theory X managers and disadvantages of theory Y?

cessy

ok back to the questions what is the full definition for magnetic flux density and state its unit??????

randomfella

Do u not have to answer a question before u post one? Ah u probraly hate business, its grand cos i hate science!

MalefarmerAnn

cessy wrote:

ok back to the questions what is the full definition for magnetic flux density and state its unit??????

Magnetic flux density is the amount of magnetic field lines which pass through the are bound by a coil

(sorry that is just a guess, is it right?)

unit equals Tesla (T)

If a monochromatic beam of light passes through a glass block, how does this affect

• The Wavelength of the light
• The speed of the light
• The frequency of the light

The pair of you asked a question within the same minute. That's what happened.


Anyway, the definition of magenetic flux density is long. So to shorten it:

Vector
Force
Length 1m
Curent 1A
Right angle

yada yada. Just put them words in to a sentence. :rolleyes:

Unit is Tesla.