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3 years ago

15

Does water expand more as the temperature drops even more below 0 deg? I am worried about the coolant in my rad. as the temp.is

40deg below.

1 answer:

alex41 [277]3 years ago

4 0

Water is, indeed, an exception. Normally when temperature drops, material shrinks. Water doesn't, water expands instead.

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Which of the following best describe a generator?

sukhopar [10]

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2 years ago

3 A rocket of mass 1200 kg is travelling at 2000 m/s. It fires its engine for 1 minute. The forward thrust provided by the rocke

natita [175]

The impulse shared by the object equals the difference in momentum of the object. In equation form,

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<h3>How to calculate thrust provided by the rocket engines is 10 kN (10 000 N).?</h3>

a)There is this impulse-momentum change equation.

$where m$ is the mass of a body, $F$ is a force acting to the body, $t$ is time and $D E L A T A N\}=V_{2}-V_{1}$ is the change of velocity.We consider everything is happen along a straight line, and gravitation does not participate.So, the increase of momentum is $\mathrm{F}^{*} \mathrm{t}=10000 \mathrm{~N} * 60$ seconds $=600000 \mathrm{~N}^{*} \mathrm{~s}=600000\left(\mathrm{~kg}^{*} \mathrm{~m}\right)^{*} \mathrm{~s} / \mathrm{s}^{\wedge} 2=600000 \mathrm{~kg}{ }^{*} \mathrm{~m} / \mathrm{s}$.$

We consider everything exits happen along a straight line, and gravitation does not participate.

So, the increase of momentum is F×t = 10000 N × 60 seconds = 600000 N*s = 600000 (kg*m)*s/s^2 = 600000 kg*m/s.

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1 year ago

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2 years ago

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2 years ago

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Dvinal [7]

Answer:

Explanation:

Given

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t=time

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so Jet Plane travels a distance of 42 m in 2 s

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3 years ago