A certain meteoroid [a rock in space] has been moving through our solar system ever since the solar system was formed, 5 billion years ago. Suppose the meteoroid is far from all planets and stars, so that the effect of gravity is negligible
Neglecting gravity, is any physical work being done on the meteoroid?
A) No, because the force of inertia on the meteoroid is balanced by the equal reaction force by the meteroid.
B) Yes, because work is always required to move any massive object through a distance.
C) No, because no forces are exerted on the meteoroid.
D) Yes, because the force of inertia is exerted on the meteoroid while the meteoroid moves.
E) Yes, because the meteoroid is moving.
C
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Which of the following statements about the arrangement of movable objects in a space is true?
a. The placement of movable objects can decrease the amount and type of interaction in a space b. The construction of movable objects such as chairs can impact people's willingness to remain in a space, c. The placement of movable objects can increase the amount and type of interaction in a space. d. All of these statements are true:
The Doppler effect is sensitive only to motion along the line of sight
a. True b. False Indicate whether the statement is true or false
In science, a broad idea that has been repeatedly verified so as to give scientists great confidence that it represents reality is called
A) a paradigm. B) a hypothesis. C) Ptolemaic model. D) a theory.
The power rating of a resistor is 0.800 W. If the value of the resistor is 400 ?, what is the maximum voltage?
A) 110 V B) 17.9 V C) 170 V D) 1.80 V