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4 years ago

Can someone help me with PE questions

Physics

2 answers:

skelet666 [1.2K]4 years ago

6 0

1. What does PE stand for? Physical Education

2. Name one common PE exercise? Your choice A knee push up B piano keys

9966 [12]4 years ago

5 0

Not until we know what the questions are.

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Vinvika [58]

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Hope this is of great help to you!
~Mistermistyeyed.

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3 years ago

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A piece of rocky debris in space has a semi major axis of 45.0 AU. What is its orbital period?

KATRIN_1 [288]

Complete Question

Planet D has a semi-major axis = 60 AU and an orbital period of 18.164 days. A piece of rocky debris in space has a semi major axis of 45.0 AU. What is its orbital period?

Answer:

The value is $T_R = 11.8 \ days$

Explanation:

From the question we are told that

The semi - major axis of the rocky debris $a_R = 45.0\ AU$

The semi - major axis of Planet D is $a_D = 60 \ AU$

The orbital period of planet D is $T_D = 18.164 \ days$

Generally from Kepler third law

$T \ \ \alpha \ \ a^{\frac{3}{2} }$

Here T is the orbital period while a is the semi major axis

$\frac{T_D}{T_R} = \frac{a^{\frac{3}{2} }}{a_R^{\frac{3}{2} }}$

=> $T_R = T_D * [\frac{a_R}{a_D} ]^{\frac{3}{2} }$

=> $T_R = 18.164 * [\frac{ 45}{60} ]^{\frac{3}{2} }$

=> $T_R = 11.8 \ days$

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3 years ago

Algorithm to determine number of shortest paths between two nodes

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What is the force required to produce a 1.4 Nm torque when applied to a door at a 60.0º angle and 0.40 m from the hinge?

Marysya12 [62]

Refer to the diagram shown below.

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This torque is equal to 1.4 N-m, therefore
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