Who’s experimentation and hypotheses led to an understanding of the presence of microorganisms and their relationship to diseases?

Pasteur and Koch

product of an object's mass and velocity


How many bytes in a kilobyte?


If you were using a 50-millimeter camera lens and changed the lens aperture from 8.0 to 5.6, about how much LESS light would the lens be allowing to pass through it:
1) 60% less
2) 50% less
3) 35% less
4) 22% less

50% LESS (Solution: 5.6/8.0 = 0.70; (0.70)2 = 0.49 ~ 50%)

what are Arthropods?

Arthropods are invertebrate animals that have an exoskeleton, a segmented body, and jointed appendages

The Treaty of Paris ended the ______ War

The Revolutionary War and recognized American independence

What formula solves for the change in length of a substance?

Extra length = (Initial length)(coefficient of thermal expansion for that material)(change in temperature)

In binary fission how does the DNA of the daughter cells compare to the DNA of the parent?

It is identical

what is internal work?

if a part of a system exerts a force on another part of the same system and motion in the direction of the force occurs

which best describes the image of a concave mirror when the object's distance from the mirror is less than the focal point distance?

virtual, upright, and magnification greater than one

Who led a Confederate charge at Cemetery Ridge?

George Pickett

What are compounds without C-C bonds?


The phenomenon by which magnetic substances get magnetized when placed near a magnet is called?

magnetism induction

what is the formula for anaerobic respiration in animals?

Glucose -> Lactic acid + energy (C6H12O6 -> 2C3H6O3 +120kj)

How many electrons can be placed in a given f subshell?

14 electrons

What is the mechanism for Grignard Synthesis of an alcohol?

The organometallic compound disassociates to a positive metal halogen, and a negative R group. The double bond of a Carbonyl dissolves to a single bond, leaving a partial positive charge on the Carbon and a partial negative charge on the Oxygen. The negative R group acts as a nucleophile and attacks the partial positive of the Carbonyl Carbon. After an acid bath, the negative Oxygen is protonated, forming an alcohol. The hydroxyl group from a dissociated water molecule adds to the metallic halogen ion, forming a halo-metallic hydroxide.

The ________ is the most famous speech by Abraham Lincoln

The Gettysburg Address

what is osmosis?

the diffusion of water across a selectively permeable membrane

what is latent heat of flux?

This is the energy needed to break hydrogen bonds to allow evaporation

Who thought the world needed slavery if it was to have clothing?