is exact. If it is exact, solve it.

Conceptual Physics 12
Problem 43E A stone is shown at rest on the ground. (a) The vector shows the weight of the stone. Complete the vector diagram showing another vector that results in zero net force on the stone. (b) What is the conventional name of the vector you have drawn?

Biology 8
Vertebrates and tunicates share a. jaws adapted for feeding. b. a high degree of cephalization. c. the formation of structures from the neural crest. d. an endoskeleton that includes a skull. e. a notochord and a dorsal, hollow nerve cord

Introduction to Probability, 2
A motorist goes through 4 lights, each of which is found to be red with probability 1/2 . The waiting times at each light are modeled as independent normal random variables with mean 1 minute and standard deviation 1/2 minute. Let X be the total waiting time at the red lights. (a) Use the total proba

Human Anatomy & Physiology 9
The white blood cell that releases histamine and other inflammatory chemicals is the (a) basophil, (b) neutrophil, (c) monocyte, (d) eosinophil.

The Practice of Statistics 5
Baby birds Do birds learn to time their breeding? Blue titmice eat caterpillars. The birds would like lots of caterpillars around when they have young to feed, but they must breed much earlier. Do the birds learn from one years experience when to time their breeding next year? Researchers randomly as

Essentials of Understanding Psychology 11
Match the theory of dreaming with its definition. 1. activation-synthesis theory 2. dreams-for-survival theory 3. dreams as wish fulfillment a. Dreams permit important information to be reprocessed during sleep. b. The manifest content of dreams disguises the latent content of the dreams. c. Electric

Psychology 12
How did Piaget, Kohlberg, and later researchers describe adolescent cognitive and moral development?

Chemistry for today : general, organic, and biochemistry 9
Ethylene glycol is mixed with water and used as an antifreeze in automobile cooling systems. If a 50% (v/v) solution is made using pure ethylene glycol and pure water, it will have a freezing point of about \(-65^{\circ} \mathrm{C}\). What will happen to the freezing point of the mixture if ethylene