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Using the Two Secant Theorem, Of LN=4, LN=x+4, LQ=13, and LP=3, solve for x.

prove that tan(60+A).tan(60-A)=2cos2A+1/2cos2A-1

if 2tan(alpha)=3tan(beta), prove that tan(alpha-beta)=sin(2beta)/5-cos(2beta)

With the recent buzz about the Higgs boson, two questions arose to me:

1. What's the difference between it and 'graviton', described in wikipedia here: http://en.wikipedia.org/wiki/Graviton ?

2. Is the Higgs Boson matter or antimatter? Since (according to my limited knowledge) matching matter and anti-matter have the same mass, could it be that the Higgs Boson is actually a 'neutral' particle, in relation to that, or is there actually an anti- Higgs Boson that does the same for antimatter?

The higgs boson has a mass of aprox 126.5 Ge/V^2.
How can the higgs boson have mass if it is the particle that gives things mass. Do higgs bosons always come in pairs so that they interact with each other to give each other mass?
And how do higgs bosons interact with massive objects? i.e., what particles do they exchange? Like two electrons exchange photons, doesn't a higgs particle and a massive object have to exchange some particles too? Do they exchange strings as in string theory?

Thank you very much for any replies :)

Create a new project in BlueJ called Assignment1. All classes for the assignment are to be saved in this project.

2. Create the required classes for the project - there should be at least three (3) classes: User, Phone and Battery. You can have any number of additional classes you think are required.

3. Class basics:
User – a user owns 1 phone, they also have a name and an amount per month they pay for their phone
Phone – a phone has a brand, a model and 1 battery. It must also store information about the phone such as whether the phone is on, if it is locked, last dialled number etc (see below)
Battery – a battery has a life i.e. the charge left in the battery and a maximum life (see below)

4. Constructors: all classes must have at least 1 alternate constructor that accepts input parameters used to initialise the class attributes (done in the body of the constructor).

Create a new project in BlueJ called Assignment1. All classes for the assignment are to be saved in this project.

2. Create the required classes for the project - there should be at least three (3) classes: User, Phone and Battery. You can have any number of additional classes you think are required.

3. Class basics:
User – a user owns 1 phone, they also have a name and an amount per month they pay for their phone
Phone – a phone has a brand, a model and 1 battery. It must also store information about the phone such as whether the phone is on, if it is locked, last dialled number etc (see below)
Battery – a battery has a life i.e. the charge left in the battery and a maximum life (see below)

4. Constructors: all classes must have at least 1 alternate constructor that accepts input parameters used to initialise the class attributes (done in the body of the constructor).

Why nitrogen has higher ionization potential than oxygen?

Consider the vector FIeld
F(x; y) =(sin(y).*cosx+1./2)i+ (sinxcosy+1./5)j This vector eld is conservative. Find a potential function  for F and plot as Figure 1 the
level curves for  which pass through the 9 points (k; L) where (k; L) = 1; 2; 3. On the same graph,
plot the vector FIeld F at those 9 points. Use axis ranges of [0; 4] on the x- and y-axes. I am confused how to approach this. Any tips or help? The program i am using is matlab

Calculate the usable area in square feet of a house. Assume that the house has four rooms, and that each room is rectangular.

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