Answer:
C. A rocket traveling to the Moon
I know one is transformed, not sure about another
Answer:
Because the soundwave bounces back when it hits the wall. Only a fraction of the soundwave gets transferred through the wall.
Answer:
The time taken by the airplane to take off, t = 11.46 s
Explanation:
Given data,
The initial velocity of the airplane, u = 24 m/s
The acceleration of the plane, a = 8 m/s
The distance covered until take off, d = 800 m
Using the III equation of motion,
v² = u² +2as
= 24² + 2 x 8 x 800
= 13376
v = 115.65 m/s
Using the first equation of motion,
v = u + at
t = (v-u) / a
= (115.65 - 24) / 8
= 11.46 s
Hence, the time taken by the airplane to take off, t = 11.46 s
I think the model being described is the Rutherford atom model. This is where he posit that atoms have a nucleus which contains positively charged protons and surrounded by electrons.
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