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aivan3 [116]
3 years ago
14

7

Physics
1 answer:
mote1985 [20]3 years ago
7 0

Answer:

OC, OD, OA, OB

Explanation:

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5) What is meant by the term trough?​
Vlad [161]

Answer:

upper part of any wave.

Explanation:

we normally define wave motion in term of movement of particles. compressions and rarefaction. rarefaction particles apart , and same as trough ( part of wave above mean line ).

8 0
4 years ago
Read 2 more answers
Please show work and tell me how you did it.
Ilya [14]

Explanation:

1) speed of bicycle = \frac{distance}{time}

speed of bicycle= \frac{20}{2}

speed of bicycle = 10 miles/hour

2)speed of rocket = \frac{distance}{time}

speed of rocket= \frac{9000}{12.12}

speed of rocket= 742.57 meter/second

3)speed of jet plane = \frac{distance}{time}

speed of jet plane= \frac{528}{4}

speed of jet plane= 132 meter/second

4)speed = \frac{distance}{time}

time = \frac{distance}{speed}

time of trip= \frac{350}{80}

time of trip = 4.375 hour

5) Distance = speed × time

Distance = 6 × 3 × 60

Distance = 1080 meter

6) Average speed = \frac{total distance}{total time}

Average speed = \frac{816}{10}

Average speed = 81.6 km/hour

7) Time = \frac{Distance}{speed}

Time = \frac{450 \times 1000}{120}

Time = 3750 m/s


4 0
3 years ago
if Gabriel kicks the football 50 meters to the west in 3 seconds , what is the velocity of the football?
Svet_ta [14]

Answer:

velocity = 16.67[m/s]

Explanation:

To solve this problem we must use the following expression of speed, where we see the relationship between displacement and time.

velocity = displacement/time [m/s]

displacement = 50 [m]

time = 3 [s]

velocity = 50/3

velocity = 16.67[m/s]

8 0
3 years ago
A fluid moves through a tube of length 1 meter and radius r=0.002±0.0002 meters under a pressure p=4⋅105±1750 pascals, at a rate
yaroslaw [1]

Answer:

The  maximum error is  \Delta  \eta  = 2032.9

Explanation:

From the question we are told that

     The length  is  l  =  1\ m

      The radius is  r =  0.002 \pm  0.0002 \ m

        The pressure is  P  =  4 *10^{5} \ \pm 1750

        The  rate  is  v =  0.5*10^{-9} \ m^3 /t

       The viscosity is  \eta  =  \frac{\pi}{8} * \frac{P *  r^4}{v}

The error in the viscosity is mathematically represented  as

       \Delta  \eta  = | \frac{\delta \eta}{\delta P}| *  \Delta  P   +    |\frac{\delta \eta}{\delta r} |*  \Delta  r +  |\frac{\delta \eta}{\delta v} |*  \Delta  v

   Where  \frac{\delta \eta }{\delta P} =  \frac{\pi}{8} *  \frac{r^4}{v}

and         \frac{\delta \eta }{\delta r} =  \frac{\pi}{8} *  \frac{4* Pr^3}{v}

and          \frac{\delta \eta }{\delta v} =  - \frac{\pi}{8} *  \frac{Pr^4}{v^2}

So  

             \Delta  \eta  = \frac{\pi}{8} [ |\frac{r^4}{v}  | *  \Delta  P   +    | \frac{4 *  P * r^3}{v}  |*  \Delta  r +  |-\frac{P* r^4}{v^2}  |*  \Delta  v]

substituting values

            \Delta  \eta  = \frac{\pi}{8} [ |\frac{(0.002)^4}{0.5*10^{-9}}  | *  1750   +    | \frac{4 *  4 *10^{5} * (0.002)^3}{0.5*10^{-9}}  |*  0.0002 +  |-\frac{ 4*10^{5}* (0.002)^4}{(0.5*10^{-9})^2}  |*  0 ]

  \Delta  \eta  = \frac{\pi}{8} [56  +  5120 ]

   \Delta  \eta  = 647 \pi

    \Delta  \eta  = 2032.9

4 0
4 years ago
Explain how bar graphs can show comparisons between 2 topics.
Pachacha [2.7K]

Answer:

A bar chart is typically used for the comparison of informations obtained from a data collection by representing each value (information) with rectangular bars respectively.

Explanation:

A bar chart also known as a bar graph can be defined as the graphical representation of data (informations) by using vertical columns or rectangular bars. When a data set is observed, a bar chart can be used to graphically represent or record the total or overall amount of information contained therein. Generally, bar charts are used for the comparison of informations obtained from a data collection by representing each value (information) with rectangular bars respectively.

The bar graph has a x-axis and a y-axis used to represent the various categories of data collected.

In this scenario, the x-axis is used to denote the points earned by the teams while the y-axis is used to denote the seasons as seen in the image attached.

<em>Hence, point scores by team (Team A, B and C) per seasons (2002, 2003, 2004 and 2005) can best be compared through the use of a bar chart (graph).</em>

8 0
3 years ago
Read 2 more answers
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