Prove the following De Morgans law for sets: For every two sets A and B, A B = A B

College Physics 1
Problem 6PE A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg. (a) Calculate the magnitude of the acceleration starting from rest if each dog exerts an average force of 185

Chemistry 11
Tin(II) fluoride (\(\mathrm{SnF}_{2}\)) is often added to toothpaste as an ingredient to prevent tooth decay. What is the mass of F in grams in 24.6 g of the compound?

Biology 8
A genetic change that caused a certain Hox gene to be expressed along the tip of a vertebrate limb bud instead offarther back helped make possible the evolution ofthe tetrapod limb. This type of change is illustrative of a. the influence of environment on development. b. paedomorphosis. c. a change i

Biology 8
Which ofthe following animals is incorrectly paired with its feeding mechanism? a. lion-substrate feeder b. baleen whale-suspension feeder c. aphid-tluid feeder d. clam-suspension feeder e. snake-bulk feeder

Anatomy & Physiology 1
In adults, new connective tissue cells originate from the ________. a. mesoderm b. mesenchyme c. ectoderm d. endoderm

Modern Chemistry 1
Given that the electron configuration for phosphorus is 1s22s22p63s23p3, answer the following questions: a. How many electrons are in each atom? b. What is the atomic number of this element? c. Write the orbital notation for this element. d. How many unpaired electrons does an atom of phosphorus have

Psychology 5
Hypnosis has been proven to have a. an effect on physical strength. b. a positive effect on memory retrieval. c. an analgesic effect. d. an age-regression effect.

Psychology 5
The prisoners dilemma game illustrates a. in-group favoritism. b. the diffusion of responsibility. c. group polarization. d. the benefits and costs of cooperation.