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Dmitry_Shevchenko [17]
3 years ago
14

explain why cups of soup at a take away kiosk are often sold in white polystrene cups with a lid to stop spillage​

Physics
1 answer:
Talja [164]3 years ago
5 0

Answer:

polystyrene is a good insulater so less heat will escape from the cup and it will keep it warm.

the cup helps it become more insulated

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Four equal masses m are so small they can be treated as points, and they are equally spaced along a long, stiff wire of neglible
anyanavicka [17]

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Explanation:

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I = 2[m(1L/2)^2] + 2[m(3L/2)^2] = 2m×. 25/L^2+ 3m×2. 25/L^2= 0. 5m/l^2 +4. 5m/l^2

= 5m/l^2.

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The Rigidbody component adds collision to a GameObject
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Rigidbodies are components that allow a GameObject<u> to react to real-time physics. </u>

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3 years ago
Which term below describes a measurement of how hard an object pushes against a surface?
Scilla [17]

I hope the answer is D. Pressure

8 0
3 years ago
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An unknown substance is tested and found to have the following physical properties: brittle fair conductor of electricity dull (
nikklg [1K]
The answer is <span>metalloid </span>

6 0
3 years ago
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A 20 ft ladder leans against a wall. The bottom of the ladder is 3 ft from the wall at time t=0 and slides away from the wall at
stellarik [79]

Answer: 0.516 ft/s

Explanation:

Given

Length of ladder L=20 ft

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So, the other end of the ladder is at

\Rightarrow y=\sqrt{20^2-5^2}=19.36\ ft

Also, at any instant t

\Rightarrow l^2=x^2+y^2

differentiate w.r.t.

\Rightarrow 0=2xv+2yv_y\\\\\Rightarrow v_y=-\dfrac{x}{y}\times v\\\\\Rightarrow v_y=-\dfrac{5}{19.36}\times 2=0.516\ ft/s

5 0
3 years ago
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