Which of the following is true about scientific models? (2 points) select one: a. models are used to simplify the study of things. b. computer models are the most reliable kind of model. c. models explain past, present and future information. d. a model is accurate if it does not change over time.
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All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction
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Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life
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Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
Which of the following is true about scientific models? (2 points) select one: a. models are used...
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