3 years ago

Explain why atoms move at different speeds depending on whether they are in liquid or solids

1 answer:

8 0

Atoms move a lot faster in liquid because the molecules have more room to move freely. On the other hand, in a solid the molecules are very tight together, giving them little room to wiggle around.

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(2 points) A pair of students measure the intensity of light from a desklamp in Sec. 4.5 of the experiment. When the detector is

Novosadov [1.4K]

Answer:

Intensity at 45 cm will be 0.2283 volt

Explanation:

We have given that intensity of signal measured by the detector is 0.74 volt at a distance of 25 cm

We know that intensity of signal is given by $I=\frac{s}{r^2}$ , here s is strength of light and r is distance

So $0.74=\frac{s}{{25}^2}$

$s=462.5$

In second case

Intensity is given by $I=\frac{s}{r^2}$

So $I=\frac{462.5}{45^2}=0.2283volt$

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3 years ago

A bicyclist travels at the speed of 25 kilometers per hour for 5 hours. How far does the bicyclist go?

mixas84 [53]

Answer:

125 kilometers

Explanation:

Speed= 25km/h

Time = 5 h

Distance= Speed x Time

= 25 x 5

= 125 km

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3 years ago

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A car weighing 11.1 kN and traveling at 13.4 m/s without negative lift attempts to round an unbanked curve with a radius of 61.0

klasskru [66]

Answer:

Well..

Explanation:

That's impossible. I know because I once weighed 11.1 kN, and I was temporarily immobile. It's probably the same for a car, and therefore it can not be "traveling" anywhere at all.. unless you put the car on an airplane or a boat or something.

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3 years ago

Don't take your heart rate with your thumb because the thumb has it's own pulse.

pogonyaev

Explanation:

yeah that's true.........

6 0

3 years ago

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1. Which of the following is correct about the sampling distribution of the sample mean

joja [24]

Answer: