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If v and t represent velocity and time, respectively, C(2) in v = C(1)t–C(2)t^2 must

(note: the symbol "^" means exponentiation: i.e.: 2 squared is 2^2 = 4).

1. have the dimensions L^2/T^2.

2. have the dimensions l/T.

3. have the dimensions L/T^3.

4. have the dimensions L/T.

5. be dimensionless.

6. have the dimensions L^2/T^3.

A rescue airplane is diving at an angle of 37º below the horizontal with a speed of 250 m/s. It releases a survival package when it is at an altitude of 600 m. If air resistance is ignored, the horizontal distance of the point of impact from the plane at the moment of the package's release is

1. 720m

2. 420m

3. 2800

4. 6800m

5. 5500m

Which of the following statements is TRUE?

a. A covalent bond is formed through the transfer

b. A pair of electrons involved in a covalent bond are sometimes referred to as "lone pairs."

c. It is not possible for two atoms to share more than two electrons.

d. Single bonds are shorter than double bonds.

e. A covalent bond has a lower potential energy than the two separate atoms.

How many of the following elements have 1 unpaired electron in the ground state?

B, Al, S, Cl

a. 1

b. 2

c. 3

d. 4

Choose the statement that is TRUE.

a. Outer electrons efficiently shield one another from nuclear charge.

b. Core electrons effectively shield outer electrons from nuclear charge.

c. Valence electrons are most difficult of all electrons to remove.

d. Core electrons are the easiest of all electrons to remove.

e. All of the above are true.

A. positive, all combustion reactions are endothermic; they all release heat to their surroundings

B. neutral, all combustion reaction are endothermic; they all release heat to their surroundings

C. negative, all combustion reactions are exothermic; they all release heat to their surroundings.

D. none of the above

A. At a given temperature, lighter gas particles travel more slowly than heavier gas particles

B. The smaller a gas particle, the slower it will effuse

C. The higher the temperature, the lower the average kinetic energy of the sample.

D. At low temperatures, intermolecular forces become important and the pressure of a gas will be lower than predicted by the ideal gas law

E. None of the above statements are true.

So lost!

Precalculus homework

Almost a year ago, I had a short rib baked ziti with brown sauce at a restaurant while on vacation. I want to try to replicate the dish as best I can. I have searched the restaurant's web site and the dish is no longer on the menu. Any ideas on a recipe for possibly the whole dish or at least the sauce?

I found one in 04 tried it on @ the store and it was too big (I remember they run large). I've been looking since and have found nothing. Any advice? I would need a M or a S

Thanks! GOOOO GATORS!!!!!