How many Saros cycles does it take for the same eclipse to occur at about the same location on Earth?
a. one cycle
b. three cycles
c. 18 cycles
d. 22 cycles
e. 54 cycles
b
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In general terms, how do the temperature structures of the atmospheres of Venus and Mars differ from that of Earth?
A) They lack ultraviolet-absorbing stratospheres. B) They lack X-ray absorbing thermospheres. C) Their atmospheres are similar in structure to Earth's but with much higher temperatures. D) Temperatures in their tropospheres increase with altitude, rather than decreasing with altitude.
At the point of fission, a nucleus of U-238, with 92 protons is divided into two smaller spheres each with 46 protons and a radius of 5.9 × 10^?15 m. What is the repulsive force pushing the two spheres apart when they are just touching one another? (The mass of the U-238 nucleus is 3.98 × 10^?25 kg.)
The units of work are the same as those of ______________
Fill in the blank(s) with correct word
The strong force depends upon the electric charge of the particles involved
Indicate whether the statement is true or false