3 years ago

Help please!! will give brainly for full answers

1 answer:

7 0

1)it starts moving /performing random action
2)once the paper clips is pulled away from the nail it will not perform the same action ,it not hold them together it changes to force field instead of contact force

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A 290 gg bird flying along at 6.2 m/sm/s sees a 9.0 gg insect heading straight toward it with a speed of 34 m/sm/s (as measured

Murrr4er [49]

Answer:

The bird's speed immediately after swallowing is 4.98 m/s.

Explanation:

Given that,

Mass of bird = 290 g

Speed = 6.2 m/s

Mass of sees = 9.0 g

Speed = 34 m/s

We need to calculate the bird's speed immediately after swallowing

Using conservation of momentum

$m_{1}v_{1}+m_{2}v_{2}=(m_{1}+m_{2})v_{3}$

Put the value into the formula

$0.290\times6.2+0.009\times(-34)=(0.290+0.009)\times v_{3}$

$v_{3}=\dfrac{0.290\times6.2-0.009\times34}{(0.290+0.009)}$

$v_{3}=4.98\ m/s$

Hence, The bird's speed immediately after swallowing is 4.98 m/s.

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3 years ago

Consider a turntable to be a circular disk of moment of inertia It rotating at a constant angular velocity ωi around an axis thr

Rom4ik [11]

Answer:

Note: Angular momentum is always conserved in a collision.

The initial angular momentum of the system is

L = ( It ) ( ωi )

where It = moment of inertia of the rotating circular disc,

ωi = angular velocity of the rotating circular disc

The final angular momentum is

L = ( It + Ir ) ( ωf )

where ωf is the final angular velocity of the system.

Since the two angular momenta are equal, we see that

( It ) ( ωi ) = ( It + Ir ) ( ωf )

so making ωf the subject of the formula

ωf = [ ( It ) / ( It + Ir ) ] ωi

Explanation:

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Answer:

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Explanation:

Those are some symptoms of autism that you described

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how do the retinas of the eyes of night hunting animals differ from the retinas of animals that hunt during the day time

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Night hunting animals have more rod cells in their retinas which allows them to see better in the dark.

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what essential characteristic does a good experiment have? a. a control group is given the experimental treatment. b. a single v

madreJ [45]

A. A control group is given the experimental treatment.

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