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Kazeer [188]
3 years ago
14

I dont get why its c i dont under the graph for the vertical component in option c

Physics
1 answer:
jek_recluse [69]3 years ago
7 0
The vertical component grows at an increasing rate because
gravity is ACCELERATING the object vertically.  So its speed
keeps growing.  Speed is the slope of the displacement graph.
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Answer: 529.9 Hz

Explanation:

Here we need to use the Doppler equation, so we have:

f' = f*(v + v0)/(v - vs)

Here, f is the frequency = 500Hz

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vs is the velocity of the source = 0m/s

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8 0
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alexandr1967 [171]

Answer:

See explanation

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3 years ago
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Answer:

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<u>Net Force </u>

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Since there is an external force applied to the box, it must have been balanced by the force of friction, thus the force of friction has the same magnitude acting opposite to the applied force.

The force of friction acting on the block has a magnitude of 15 N opposite to the applied force.

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