Copernicus was the first person to suggest a Sun-centered solar system.
What will be an ideal response?
false
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In the chrome plating of steel automotive parts, it is found that it is possible to have a high-quality coating with a current density of 0.4 A/cm 2 by heating the chromic acid solution to 65°C and using a chrome anode.
Which of the following is the most basic definition of a greenhouse gas?
A) a gas that absorbs infrared light B) a gas that makes a planet much hotter than it would be otherwise, even in small amounts C) a gas that keeps warms air from rising, and therefore warms the surface D) a gas that reflects a lot of sunlight
When a car of mass accelerates from 10.0 m/s to some final speed, 4.00 × 105 J of work are done on it by the frictional force exerted on the car by the road's surface. Find this final speed
A) 28.0 m/s B) 22.4 m/s C) 25.2 m/s D) 30.8 m/s
A chemical change results in
A) new atoms. B) a physical change. C) new materials. D) a new phase.