In the designation ? Canis Majoris, which part refers to the star and which part refers to the constellation?
a. ? refers to the constellation and Canis Majoris refers to the star. b. ? Canis Majoris refers to the star whereas Canis Majoris refes to the constellation.
c. ? Canis refers to the star whereas Majoris refers to the constellation. d. None of the other choices are correct.
b
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Compared to the recoiling cannon, a fired cannonball has a
A) greater momentum. B) greater kinetic energy. C) smaller speed. D) all of the above
A hill is 150 m long and makes an angle of 12° with the horizontal. As a 60-kg jogger runs up the hill, how much work does gravity do on the jogger?
a. 8.82E+4 J b. 1.83E+4 J c. ?1.83E+4 J d. 8.63E+4 J e. zero
A pair of equal-length vectors at right angles to each other have a resultant. If the angle between the vectors is less than 90°, their resultant is
A) less. B) the same. C) greater.
A ball is thrown with a velocity of 40 m/s at an angle of 30° above the horizontal and attains a certain range R. At what other angle will this ball attain the same range keeping its initial velocity the same?
A) 15° B) 90° C) 120° D) 60° E) All other angles will give different ranges.