Tides are caused because different parts of the Earth's oceans are at different distances from the Moon
a. True
b. False
Indicate whether the statement is true or false
True
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The Sun is located at the center of Earth's elliptical orbit.
Answer the following statement true (T) or false (F)
An electron of mass 9.11 × 10^-31 kg moves with a speed of 0.800c. What is its kinetic energy? (c = 3.00 × 10^8 m/s)
a. 5.47 × 10^-14 J c. 3.90 × 10^-14 J b. 2.05 × 10^-14 J d. 6.22 × 10^-14 J
Which of the following does N* represent in the Drake equation, Nc = N* × fp × nHZ × fL × fI × fs?
A) The average number of planets in a solar system B) The fraction of stars that have planets C) The number of stars in our galaxy D) The fraction of suitable planets on which life begins
How do the speeds at which we are moving with Earth's rotation and orbit compare to the speeds of more familiar objects?
A) Earth's rotation carries most people around the axis faster than a commercial jet travels, and Earth's orbit carries us around the Sun faster than the Space Station orbits Earth. B) Earth's rotation carries most people around the axis at about the speed of a commercial jet, and Earth's orbit carries us around the Sun at about the speed of a military jet. C) Earth's rotation carries most people around the axis at about the speed of a car on the freeway, and Earth's orbit carries us around the Sun at about the speed of a commercial jet. D) Earth's rotation carries most people around the axis at about the speed at which the Space Station orbits Earth, and Earth's orbit carries us around the Sun at nearly the speed of light.