3 years ago

An electric field around two charged objects is shown.

Physics

1 answer:

mamaluj [8]3 years ago

3 0

Answer: D

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X: positive

Y: negative

Explanation:

It's either A or D and I chose A and got it wrong.

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P14.003A spherical gas-storage tank with an inside diameter of 8.1 m is being constructed to store gas under an internal pressur

Artist 52 [7]

Answer:

The minimum wall thickness required for the spherical tank is 0.0189 m

Explanation:

Given data:

d = inside diameter = 8.1 m

P = internal pressure = 1.26 MPa

σ = 270 MPa

factor of safety = 2

Question: Determine the minimum wall thickness required for the spherical tank, tmin = ?

The allow factor of safety:

$\sigma _{a} =\frac{\sigma }{factor-of-safety} =\frac{270}{2} =135MPa$

The minimun wall thickness:

$t=\frac{Pd}{4\sigma _{a} } =\frac{1.26*8.1}{4*135} =0.0189m$

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faust18 [17]

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Explanation: W = 50 N

BY FORMULA

W = MG

M = W/G

M = 50 /9.8

M= 5.10 KG

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2 years ago

Read the paragraph below from the section "An Object At Rest Has Potential Energy

ch4aika [34]

I think it’s d because it talks about a spring with is common like the spring in a pen

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How much does the earth/sky weigh?

Talja [164]

Calculated weight (by experimentally) of Earth is 5.972 × 10²⁴ N

Hope this helps!

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How are mechanical waves and electromagnetic waves alike?

miss Akunina [59]

I got this answer from the internet

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