Two ropes are attached to a 40-kg object. The first rope applies a force of 50 N and the second, 40 N. If the two ropes are perpendicular to each other, what is the resultant magnitude of the acceleration of the object?
a. 1.2 m/s2
c. 25 m/s2
b. 1.6 m/s2
d. 47 m/s2
B
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Would you expect polypropylene to be denser or less dense than low-density polyethylene? Why?
A) Polypropylene should be more dense because because it has a greater molecular mass. B) Polyproylene should be more dense because its molecules are able to pack more closely together. C) Polyproylene should be less dense because its molecules are not able to pack together as tightly. D) Polypropylene should be more dense given that the polyethylene is already known to be of low density.
According to __________, _______________ motion occurs when natural motion has to be sustained by a force
Fill in the blank(s) with correct word
The ____________________ Tables were based on a heliocentric model of the universe and used elliptical orbits for the planets
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The first self-sustaining nuclear fission reaction was achieved in Chicago in 1942 under the direction of a scientist named ______________
Fill in the blank(s) with correct word