The emergency blankets in some first-aid kits consist of very thin Mylar that has been coated with aluminum to make it shiny. How can such thin plastic be a blanket? Which mechanism of a person’s heat loss is most effectively suppressed by the blanket?
A. Conduction
B. Convection
C. Radiation
C. Radiation
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Amino acids are organic molecules that contain?
(a)Protein (b)Amino group + carboxyl group (c)Carbohydrates (d)Ethylene + polyethylene •
A hockey puck slides off the edge of a table with an initial velocity of 26.0 m/s. The height of the table above the ground is 2.00 m. What is the angle below the horizontal of the velocity of the puck just before it hits the ground?
A) 77.2° B) 72.6° C) 12.8° D) 13.5° E) 31.8°
A spaceship is moving past you at a speed very close to the speed of light. If you could somehow watch the people inside it over a long period of time, what would you conclude?
A) They are aging more rapidly than you. B) Their mechanical clocks go slower than yours, but the people are aging at the same rate as you. C) Their time is the same as your time. D) They are aging more slowly than you.
Compare the way an optical and radio astronomer would map the Galaxy
What will be an ideal response?