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3 years ago

How can a person’s movement away and towards a reference point be analyzed using a position-time graph?

Physics

1 answer:

Katyanochek1 [597]3 years ago

8 0

Answer:

Explanation:

You can plot their change in position per unit of time. By taking the slope of this graph, you can figure out the velocity at any point

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2. A small piece of dust is located in between two oppositely charged parallel plates where there exists a uniform electric fiel

Alla [95]

Answer:

The total charge is $q = 1.6*10^{-4}C$

The change in potential energy is $\Delta U = -4*10^{-2}J$

The height is $h= 8.2cm$

Explanation:

From the question we are told that the

The magnitude of electric field is $E = 5000N/C$

The number of proton is $N_p = 1*10^{15}$

The distance between the plates is $d = 5cm = \frac{5}{100} = 0.05m$

The total charge can be mathematically represented as

$q = N_p * e$

Where e is the charge on one proton which has a value of $=1.6*10^{-19}C$

Substituting values

$q = 1 *10^{15} * 1.6*10^{-19} = 1.6 *10^{-4}C$

The change in potential energy is mathematically represented ads

$\Delta U = -(qE)d$

where the negative sign shows that the work done by the electric force is against the electric field

Substituting values

$\Delta U = - 1.6*10^{-4} * 5000 * 0.05$

$= -4*10^{-2}J$

The mass of the bead is given as 0.05kg

The change in potential due to gravity is mathematically given as

$\Delta U = -mgh$

the negative sign is due to the fact that the height is decreasing

And $g =9.8m/s^2$

Making h the subject

$h = \frac{\Delta U}{mg}$

Substituting values

$h = \frac{4*10^{-2}}{0.05 * 9.8}$

$=0.081m = 0.082 *100 = 8.2cm$

4 0

4 years ago

It opens or close the circuit

gayaneshka [121]

Answer:

The person above me is right i had a test a couple of days ago and thats kinda what u put and got it right!

3 0

3 years ago

What is the difference between aerial photography and satellite imagery

Pachacha [2.7K]

<span>The difference is that an aerial photo is a photo of an area and satellite
hope this helped:)</span>

7 0

4 years ago

Read 2 more answers

The age of the universe in seconds

Marianna [84]

Answer:

4.351968e+17 seconds

Explanation:

So I googled age of the universe and it says 13.8 billion years.

you'll have to do some conversions:

in one year, there are 365 days. in one day, there are 24 hours. in one hour, there are 3600 seconds.

$\frac{1 year}{365 days} x \frac{1 day}{24 hours} x \frac{1 hour}{3600 seconds}$

so you have to add in the current age of the universe to that equation:

$\frac{x seconds}{13.8 bil years} x \frac{1 year}{365 days} x \frac{1 day}{24 hours} x \frac{1 hour}{3600 seconds}$

arranged so that the proper "units" will read as "x seconds" at the end of the equation.

then you do the math to find x:

13.8 billion x 365 x 24 x 3600 = 4.351968e+17 seconds.

which would be 435,196,800,000,000,000 seconds

Hope this helps :)

7 0

4 years ago

During a baseball game, a baseball is struck at ground level by a batter. The ball leaves the baseball bat with an initial speed

krok68 [10]

Answer:

Detailed solution is given below:

3 0

3 years ago