what items am i allowed in my hand luggage?

Answer 1

Here's the info directly from this morning's advisory notice:

If you are traveling with any liquid, gel or aerosol items, here's a few things you should remember:

Travelers departing the U.S. may bring carry-on bags through security and aboard the aircraft with trial-size toiletries (3.4 ounces or less) which can be purchased at any drug store.
Toiletries must fit comfortably in one, quart-size (7.5" x 8"), clear plastic zip-top bag. Zip-top bags will be provided if needed.
The zip-top bag may need to be presented separately at airport security so make sure it is easily accessible when you approach the screening area.
Additionally, beverages or toiletries purchased inside the airport beyond the security checkpoints will be allowed onboard the aircraft.

Items greater than 3.4 ounces and/or not contained in a zip-top bag may be allowed on board but must be declared to the TSA at the security checkpoint for screening. These items include baby formula, milk (to include breast milk), baby food, juice, medications and liquids/gels that are needed for diabetic or other medical conditions.

Restrictions vary for flights departing from non - U.S. locations. Travelers should check with the departure airport for specific security restrictions.

Answer 2

With the size restrictions you are now only allowed to carry on small weapens like Uzi's. No AK47's I'm afraid

Answer 3

you can take small bottles of liquid that need to go into a sealed bag (provided at the airport if you don't have one)
they have to be 100ml or less.

Answer 4

I would suggest that you visit the TSA website http://www.tsa.gov/ as they have the complete list of what you can and can not bring on the aircraft with you.