The support force on a 30-kg dog sleeping on the floor is
A) less than 300 N.
B) about 300 N.
C) more than 300 N.
D) nonexistent while asleep.
Answer: B
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The ____________________ Tables were based on a heliocentric model of the universe and used elliptical orbits for the planets
Fill in the blank(s) with correct word
Which of the following is not a fundamental force?
A) strong force B) weak force C) degeneracy pressure D) electromagnetic force E) gravity
The natural frequency of an object depends on its
A) elasticity. B) size and shape. C) both of these D) none of the above
The mass of the Milky Way Galaxy can be estimated by:
A) the orbital motions of the stars within the galaxy. B) the mass of the planets in the Solar System. C) the luminosity of the stars of the neighboring galaxies. D) the concept laid down by the spiral density wave theory.