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3 years ago

Why is illegal immigration a controversial issue?

Physics

1 answer:

podryga [215]3 years ago

4 0

D is the answer hope this helped

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The force diagram represents a girl pulling a sled with a mass of 6.0 kg to the left with a force of 10.0 N at a 30.0 degree ang

STatiana [176]

the correct answers are 54N and -1,2m/s^2

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3 years ago

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What's a vector? Thanks!

ehidna [41]

"<span>In physics and mathematics, any quantity with both a magnitude and a direction" </span>

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3 years ago

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A 3.10-mm-long, 430 kgkg steel beam extends horizontally from the point where it has been bolted to the framework of a new build

Alex17521 [72]

Answer:

Explanation:

Given that,

The length of the beam L = 3.10m

The mass of the steam beam $m_1$ = 430kg

The mass of worker $m_2$ = 69.0kg

The distance from the fixed point to centre of gravity of beam = $\frac{L}{2}$

and our length of beam is 3.10m

so the distance from the fixed point to centre of gravity of beam is

$\frac{3.10}{2}=1.55m$

Then the net torque is

$=-W_sL'-W_wL\\\\=-(W_sL'+W_wL)$

$W_s$ is the weight of steel rod

$=430\times9.8=4214N$

$W_w$ is the weight of the worker

$=69\times9.8\\\\=676.2N$

Torque can now be calculated

$-(4214\times1.55+676.2\times3.9)Nm\\\\-(6531.7+2637.18)Nm\\\\-(9168.88)Nm$

≅ 9169Nm

<h3>Therefore,the magnitude of the torque is 9169Nm</h3>

4 0

4 years ago

Physics !!!!!!!!!!!!!!!!!

madreJ [45]

Answer:

1) v = -0.89 m/s

2) v = 36.5 m/s

Explanation:

1) Given

The mass of the boy, M = 45 Kg

The mass of the skateboard, m = 2 Kg

The initial velocity of the boy and skateboard is zero

According to the law of conservation of linear momentum

MV + mv = 0

V = - mv/M

Substituting the given values in the above equation

V = -2 x 20/ 45

= -0.89 m/s

Hence, the velocity of the boy, v = -0.89 m/s

2) Given

The mass of the boy, M = 47 Kg

The mass of the skateboard, m = 8 Kg

The initial combined velocity of the boy and skateboard, u = 4.2 m/s

The boy jumped off from the skateboard with velocity, V = -1.3 m/s

According to the law of conservation of momentum,

MV + mv = (M + m)u

v = [(M + m)u - MV] / m

Substituting the given values,

v = [(47 + 8)4.2 - 47(-1.3)] / 8

= 36.5 m/s

Hence, the velocity of the skateboard, v = 36.5 m/s

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4 years ago

How is a full moon different from a new moon?

koban [17]

<span>A full moon is at its brightest, and here is no disk to be seen. New moons are barely visable.</span>

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3 years ago

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