Answer:
1-D(carbon dioxide, water and sunlight)
2-D(parasitism)
3-C(competition)
Explanation:
hope it helps
Construct an hypothesis <em /><em>(Because </em>the magnet wasn't attracted to the door, the door must be non-magnetic.) He has already made an observation (the magnent didn't stick), and already asked a question (<em>Why </em>didn't the magnent stick). However, he has not explained the results (there is no experiment yet).
Answer: Although the gravitational force the Earth exerts on the objects is different, their masses are just as different, so the effect we observe (acceleration) is the same for each. The Earth's gravitational force accelerates objects when they fall. It constantly pulls, and the objects constantly speed up.
Answer:
1.47x10^11
Explanation:
young modulus = stress / strain
stress = force / area = 200x9.8 / 0.00004 = 49000000
strain = extension / length = 0.001 / 3 = 0.0003333
49 million / 0.0003333 = 1.47x10^11
Using the information given, it's not possible to answer that question.
Regarding the cinder block, however . . .
Potential energy = (mass) x (gravity) x (height)
8 joules = (mass) x (9.8 m/s²) x (6 m)
Mass = (8 J) / (9.8 m/s² x 6 m) = 0.136 kg .
(A real cinderblock has about 67 times that much mass.)
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We have no information that would enable us
to answer the question about the apple.