How many kilojoules of energy from coal are needed
Suppose that a coal-fired power plant converts energy from coal into electrical energy with 36 percent efficiency. How many kilojoules of energy from coal are needed to produce 1.0 jk of electrical energy?
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You have a baseball bat and a driver (golf club). Which one is the more efficient implement to strike the ball used in the sport? Explain your choice using the concepts of center of gravity, lever arm and angular momentum.
A vessel of volume 22.44 dm^3 contains 2.0 mol h2 and 1.0 mole of N2 at 273.15 K initially. All the H2 reacted with sufficient N2 to form NH3.
Estimate the rate at which the matter falls into the Cygnus A's supermassive black hole. Express your answer as the number of solar masses per century.
(a) What supports a white dwarf from further collapse? (b) Why can't a white dwarf have mass greater than 1.4M? (c) What supports a neutron star from collapsing under its own weight? (d) What will happen to a neutron star whose mass is greater tha
What is the length of a simple pendulum that has this same period?
What must the sign and magnitude of q2 be for the net electric field at the origin to be 50.0 N/C in the +x-direction?
If the consistency of the product stream needed to one half of what it is presently, how much 0.5% consistency fiber-water solid stream must be added in lbm/min?
A concentration of 8.00 x 10^2 ppm by volume of carbon monoxide is considered lethal to humans. Calculate the volume in Liters occupied by CO in a room that measures 17.6m long by 8.80m wide by 2.64m high at this concentration.
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How could they obtain sufficient DNA for an analysis of the ancient human's genes?
Name four important biogeochemical processes that cycle matter. Identify the living and nonliving parts of the nitrogen cycle.
Bacteria reproduce more rapidly than animals and are easier to manipulate. Why, then, would we ever transfer human genes to other animal species
Rewrite in a paragraph Thalamus: Receives all sensory impulses (except for sense of smell) Channels impulses to appropriate part of cerebral cortex Hypothalamus
Problem: Which of the following is an accurate statement about the T4 bacteriophage that infects E. coli?
New molecules of DNA are synthesized by copying the genetic sequence of another molecule of DNA, which we call the template,
Question: How does RNA polymerase "know" where to start transcribing a gene into mRNA?