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maria [59]
3 years ago
12

Is a measure of how rapidly or slowly molecules move?

Physics
2 answers:
horsena [70]3 years ago
8 0
Temperature is a measure of how rapidly or slowly molecules move.<span />
Marina86 [1]3 years ago
3 0
Temperature is is a measure of how rapidly or slowly molecules move.
Molecules that move slower have lower temperature, and faster moving molecules have higher temperature. 
<span>The difference in temperature results in heat, which is transfer of energy.

</span>
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A 4 kW vacuum cleaner is powered by an electric motor whose efficiency is 90%. (Note that the electric motor delivers 4 W of net
RoseWind [281]

Answer:3.6\ kW

Explanation:

Given

Power Supplied [tex]P_{input}=4\ kW[/tex]

Efficiency of the motor \neta =90\%

and \neta =\dfrac{\text{Power output}}{\text{Power input}}

\Rightarrow 0.9=\dfrac{P_{out}}{4}

\Rightarrow P=0.9\times 4

\Rightarrow P=3.6\ kW

So, vacuum cleaner delivers a power of 3.6\ kW

3 0
2 years ago
The pull of the moon on Earth's tidal bulge is causing _____. the earth to gradually rotate faster the earth to slowly expand in
MAVERICK [17]
Not 100% but i think it'll cause the earth to rotate slightly slower, its definitely not the last one though
5 0
2 years ago
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Plz do it all plz will give you a brainlest,thanks,5 stars to best answer
Arte-miy333 [17]

Answer:

B I think

Explanation:

3 0
2 years ago
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A plane flying horizontally at an altitude of 1 mi and a speed of 580 mi/h passes directly over a radar station. Find the rate a
shusha [124]
<span> the tangent function of 2mi/5mi = 21.8 degrees
cosine of that angle = cos (21.8 degrees)
                                =0.928
 multiply 0.928 with 570 = 570*0.928
     Closing velocity         =  529.23 mph
</span><span>As the plane gets closer to radar station, tangent function becomes infinity and the cosine function becomes zero.....
</span>0*570 = 0 
8 0
3 years ago
Which of the following best describes the momentum of two bodies after a two-body collision if the kinetic energy of the system
34kurt

Answer:

B

Explanation:

In a two body collision where kinetic energy is conserved , this means the kinetic energy before collision is equal to the kinetic energy after collision.

when kinetic energy is conserved , momentum is also conserved.

m1u1 +m2u2 = m1v1 +m2v2

or

m1u1 +m2u2 = (m1+m2)v

The above equations are for bodies that undergoes elastic and inelastic collisions. It represents their momentum before and after collision which are equal

3 0
3 years ago
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