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3 years ago

Is it true or false that the displacement always equals the product of the average velocity and the time interval?

Physics

1 answer:

Cloud [144]3 years ago

5 0

Answer:

True.

Explanation:

Applying the definition of average velocity, we know that we can always write the following expression:

$v_{avg} = \frac{\Delta x}{\Delta t}$ (1)

By definition, Δx is just the displacement, and Δt is the time interval.
So, just rearranging terms in (1), we get:

$\Delta x} = v_{avg}* {\Delta t}$

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When measuring accelerations with three different graphs (x-t, v-t, a-t) which gives the most reliable results and why?

kipiarov [429]

Answer:

the best graph to find the acceleration is v-t since calculating the slope averages the different experimental errors.

Explanation:

The different graphics depending on time give various information, let's examine what we can get from some

Graph of x -t. from this graph we can obtain the speed through the slope, but the acceleration is not directly obtainable

v-t chart. We can get the acceleration not through the slope and the distance traveled by the area under the curve. Obtaining acceleration is very accurate since it is an average that avoids possible errors in measurements. This is the best graph to find the acceleration

Graph of a-t In this graph the acceleration is a point on the Y axis, it gives some errors because it depends strongly on the possible experimental errors.

In conclusion, the best graph to find the acceleration is v-t since calculating the slope averages the different experimental errors.

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3 years ago

A container is filled to a depth of 19.0 cm with water. On top of the water floats a 31.0-cm-thick layer of oil with specific gr

IceJOKER [234]

Answer:

Absolute pressure of the oil will be 102822.8 Pa

Explanation:

We have given height h = 31 cm = 0.31 m

Acceleration due to gravity $g=9.8m/sec^2$

Specific gravity of oil = 0.600

So density of oil $\rho =0.6\times 1000=600kg/m^3$

We know that absolute pressure is given by $P=P_0+\rho gh$ , here $P_0=1.01\times 10^5Pa$

So absolute pressure will be equal to $P=1.01\times 10^5+600\times 9.8\times 0.31=102822.8Pa$

So absolute pressure of the oil will be 102822.8 Pa

6 0

3 years ago

What is The common value for the speed of light in a vacuum

Talja [164]

The most common value for the speed of light is 3*10^8 meters/second.

A more accurate number is <span>299 792 458 m/second, but that number is hardly ever used.</span>

4 0

3 years ago

What kind of stored energy enables a stretched bow to shoot an arrow?

blsea [12.9K]

Sorry if im wrong but I'll say kinetic energy

Hope it helps:)

7 0

3 years ago

Read 2 more answers

One circuit contains only an ac generator and a resistor, and the rms current in this circuit is IR. Another circuit contains on

snow_tiger [21]

Answer:

1/3 times.