At a given location the direction of the magnetic field is the direction that the north pole of a compass points when placed at that location
Indicate whether the statement is true or false
TRUE
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Which of the following statements best describes the size of the largest asteroid, Ceres?
A) a little less than half the diameter of our Moon B) about the size of a terrestrial planet C) smaller than the jovian planets but larger than the terrestrial planets D) no larger than a typical mountain on Earth
A habitable zone
A) exists around all stars B) only exists around stars which are identical to the Sun C) only exists around stars which are similar to our Sun D) only exists around one star, the Sun
What maximum velocity does the star attain?
What will be an ideal response?
When a single boxcar in the freight yard hooks onto a stationary string of four boxcars, there is some kinetic energy lost. Which of the following could account for the missing energy?
A. Sound energy in the loud CLANG when they hook together and heat energy in the clamping mechanism between cars as it opens and then captures the fifth boxcar B. Heat energy in the clamping mechanism between cars as it opens and then captures the fifth boxcar C. Sound energy in the loud CLANG when they hook together