Assume all else is unchanged, and the Earth's rotational axis is perpendicular to the ecliptic. As a result, seasonal variations on the Earth would
a. be practically non-existent.
b. remain the same as they are at now.
c. have the same severity but each season would last twice as long.
d. be much more severe.
a
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Maximum magnetic force occurs when electrons move
A) in the same direction as the magnetic field. B) opposite to the magnetic field direction. C) perpendicular to the magnetic field direction. D) at non-right angles to the magnetic field direction. E) none of the above
Why are Uranus and Neptune so blue?
A. The planets are very hot, so their blackbody spectra peak at blue wavelengths. B. Hydrogen appears blue when it reflects sunlight. C. Methane in their atmospheres absorb red light and reflect blue light. D. They reflect blue light from their moons.
Two identical buckets are filled to the brim, one with water and the other with alcohol. The liquid pressure at the bottom of the bucket of water is
1) less than the pressure at the bottom of the bucket of alcohol. 2) more than the pressure at the bottom of the bucket of alcohol. 3) equal to the pressure at the bottom of the bucket of alcohol. This is because 4) both containers are of the same volume. 5) alcohol is less dense than water. 6) both containers are filled to the same depth.
Simple Harmonic Motion: A point on the string of a violin moves up and down in simple harmonic motion with an amplitude of 1.24 mm and a frequency of 875 Hz.(a) What is the maximum speed of that point in SI units?(b) What is the maximum acceleration of the point in SI units?
What will be an ideal response?