3 years ago

Write about Geothermal energy????????????

Physics

1 answer:

svlad2 [7]3 years ago

8 0

Energy Produced by water and heatfrom the inner core of the earth of the earth

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A block of mass 2 kg is launched by compressing a spring of force constant 1200 N/m. The block slides on a frictionless surface,

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If |v|= 11, |w|= 23, |v-w|= 30, find |v+w|

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Answer:

$|v+w|=20$

Explanation:

We are given that

|v|=11

|w|=23

|v-w|=30

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Using the formula

$(30)^2=(11)^2+(23)^2-2(11)(23)cos\theta$

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$cos\theta=-\frac{250}{506}$

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Using the formula

$|v+w|^2=(11)^2+(23)^2+2(11)(23)\times (-\frac{250}{506})$

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3 years ago

You are holding one end of a horizontal stretched string. Flicking your wrist will send a pulse down the string. Which actions w

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