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nasty-shy [4]
3 years ago
9

a track coach with a meter stick and a stopwatch is trying to determine if a student is walking with constant speed.he should...

Physics
1 answer:
Aleksandr [31]3 years ago
7 0
Give you a device that tracks your speed?
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The dimension line is connected to the part being measured by _______________. A. Hidden lines B. Extension lines C. Visible lin
kondaur [170]
B: Extension Lines! You could have just searched this up on google
3 0
3 years ago
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How is temperature related to the physical change of a<br>substance​
blagie [28]

Answer:

~~Now, you have left your question very open ended and didn't ask for any particular kind of answer so I'll do my best to get what you're looking for.~~

A physical change in a substance doesn't change what the substance is. It can possibly melt or freeze an object. I mean heat makes things expand while cooling makes them retract.... In chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

4 0
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In a building with 10.000 cubic feet where the air changes every two hours, what the rate of air change? A. 167.7 cfm B. 83.3 cf
Naya [18.7K]

Answer:

Flow rate of air is given as 83.33 cubic feet per minute

Explanation:

As we know that total volume of the air flow is given as

V = 10,000 cubic feet

also we know that total time is

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now we have flow rate given as

Q = \frac{V}{t}

Q = \frac{10000}{120}

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3 0
3 years ago
How much time will it take a car travelling at 88 km/hr (55 mi/hr) to travel 500km
Elis [28]
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3 years ago
A single conservative force Fx = (6.0x  12) N (x is in m) acts on a particle moving along the x axis. The potential energy asso
jasenka [17]

Answer:

U(3)=-43J

Explanation:

Potential energy is minus the integral of Fdx.  Doing the integration yields:

U=\int\limits {6.0x+12}\, dx

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so

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C=20

Now for x=3.0m

U(3)=-3*(3)^2-12(3)+20

U(3)=-43J

6 0
3 years ago
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