What is the greenhouse Effect and why is it vital to life here?
What will be an ideal response?
The gases carbon dioxide and water vapor trap infrared energy close to the Earth's surface, warming us enough to keep the hydrosphere liquid. With no Greenhouse heating, the surface temperature of Earth would average -23 degrees Celsius and the oceans would freeze.
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An object is placed 6.0 cm in front of a convex mirror with a radius of curvature of 16.0 cm. Which of the following statements describes the image?
A) The image is upright and 3.4 cm in front of the mirror. B) The image is inverted and 3.4 cm behind the mirror. C) The image is upright and 3.4 cm behind the mirror. D) The image is inverted and 3.4 cm in front of the mirror. E) none of the above
Temperature inversions involve a higher temperature at ground level than in the air over the ground
What will be an ideal response?
If a string of length L, fixed at both ends, is made to resonate at its lowest possible frequency, what is the wavelength associated with that resonance?
A. L B. 2L C. L/2 D. 0.707L E. 1.414L
An atom which has 4 protons and 6 neutrons will be electrically neutral if it contains
A) 4 electrons. B) 6 electrons. C) 10 electrons. D) at least one electron.