Which one is not physical quantity question is mistake

Answer:

100cm or 1.09361yards or 1000mm

Explanation:

The meter, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s-1, where the second is defined in terms of ΔνCs.

Answer:

a hypothesis is an assumption made before any research has been completed for the sake of testing (basically what you think is going to happen). A theory is an explanation for what has been shown many times. (what happened with evidence)

Explanation:

The four abstract forms and their tangible copies that apply to the liberated prisoner in the myth of Plato's cave are:

1. Astonishment.

2. Anger.

3. Happiness.

4. Alienation:

The feelings of the liberated prisoner in the myth of Plato's cave.

Once the prisoner is released by figures that do not correspond to shadows but to tangible beings that can lift him or even pull or drag him, the first form he must experience is astonishment, identifiable by his copy, which would be the raising of the eyebrows and / or or the opening of its mouth reflecting that shape.

Next, the myth of the cave tells us that the man was forced to leave the cave, for which the experienced form must have been anger, reflected in his copy that would be possible shouts towards the people who take him out of the cave and they make you walk on rough terrain.

Later, once the liberated man accustoms his eyes and can see more defined forms such as trees, people or even the sun, his form is joy, whose copy is laughter, out of laughter if that is the case, being now aware of a whole new that I did not know.

Once the freed prisoner returns to the cave, having a different concept about the reflected shadows to which his companions are accustomed, the abstract form is alienation, followed by his copy that is crying, since he will surely be excluded by his acquaintances. , which I would be trying to help.

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Answer:

Explanation:

The mass of an electron is small compared to the neutron and proton, so it's negligible. It's like adding zero to a number.

Answer:

E = q V B     describes the electric field induced

E Proportional to V B

while the magnet is pushed into the coil the induced field (B) will increase (consider 1 turn of the coil)

If V is constant the E-field will increase due to increasing B and the galvanometer will deflect accordingly

When V drops to zero the deflection must again be zero

So one would see a blip due to the deflection of the galvanometer

Note that as V increases the galvanometer will deflect one way and then as V drops to zero the deflection will be opposite (drop to zero when V is zero)

B always increases to a constant value because of the properties of the magnet.

Answer:

Option A - Sound waves must move through a substance

Explanation:

Unlike light waves, sound waves must travel through a medium/substance for such a medium to vibrate and then produce sound.

As a matter of fact sound can't travel through empty space.

Thus, looking at the options given, the correct one is:

Sound waves must move through a substance which is Option A

Explanation:

Three equations of motion are as follows:-

Explanation:

When the water level in Neapl's over 6,000 rivers and creeks, flowing north to South, swells up during the monsoon season, they wreak havoc in the downstream communities of the plains .

Answer:

Hope that helps...thats the formular you use when it involves two speeds

Answer:

by using graphical meythod

The minimum speed with which a projectile will travel a range is given by the speed when the given range is taken as the maximum range for the given speed

The minimum takeoff speed for such a leap is approximately 9.9 m/s

The known parameter is the distance a grey kangaroo can leap = 10 meters

The required information is the minimum takeoff speed for the leap

Solution:

The path of motion of the kangaroo as they leap is the path of a projectile

The distance of the leap is the range of the projectile

The formula for the maximum range is presented as follows;

[tex]Maximum \ range, R = \mathbf{ \dfrac{v_0^2 }{g}}[/tex]

v₀ = The initial speed of the kangaroo

g = The acceleration due to gravity ≈ 9.81 m/s²

The minimum speed to reach a maximum range of, R = 10 meters is found as follows;

[tex]\mathbf{ Maximum \ range, R} = 10 \, m = \dfrac{v_0^2 }{9.81 \ m/s^2}[/tex]

Therefore;

v₀² = 10 m × 9.81 m/s² = 98.1 m²/s²

v₀ = √(98.1 m²/s²) ≈ 9.9 m/s

The minimum takeoff speed for the kangaroo to leap 10 meters on horizontal ground, v₀ ≈ 9.9 m/s

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[tex] \large \mathfrak{Answer : }[/tex]

The S.I unit of velocity is m/s and since it's velocity it needs to be in a particular direction, therefore most appropriate answer is :

B. She is running west at 2.4 m/s

The criterion of significant figures can to find the result with reliable figures

          X = 9.2 10⁻⁵

now with the propagation of errors we obtain the result with its uncertainty

         X ± ΔX = (9.2 ± 0.5) 10⁻⁵

given Parameter

     * expression values ​​with their absolute errors

to find

     * the result with the correct significant figures

     * the absolute error of the expression

Significant figures are defined with the number of decimals that give information, the number of figures in a quantity gives information about the uncertainty of this quantity.

There are two criteria for applying significant figures:

     * Add and subtract the result of going with the number of decimal places of the figure that has the least

    * Product and division as a result of going with the least number of significant figures than the value that has the least.

Remember that the zero to the left do not form a pair of the significant figures

Let's apply this belief to the case presented, let's write the precaution

              [tex]x = \frac{a-b}{c}[/tex]

where in this case they are worth

         a = 0.0336 ± 0.0002

         b = 0.010 ± 0.001

         c = 255.4 ± 0.4

We see that the significant figures of each parameterize (a, b, c) and their absolute errors are correct.

Let's apply the criteria to the operation

          a-b = 0.0336 - 0.010

          a- b = 0.0236

we apply the criterion of significant figures for the subtraction, the result must be with 3 decimal places

        a - b = 0.024

let's do the other operation

         X = [tex]\frac{a-b}{c}[/tex]

         X = 0.024 / 255.4

         X = 9.24 10⁻⁵

We apply the criterion of significant figures for the division, in this case the result is left with two significant figures

         X = 9.2 10⁻⁵

The uncertainty or error of the measurements is of most importance as it determines how many significative figures are reliable at a given magnitude.

If the magnitudes are measured with some type of instrument, the absolute error is given by the appreciation of the instrument, if the magnitude is calculated using some equation, the errors must be propagated using the variations of each parameter in the worst case.

the uncertainty of the calculated quantity (X) is

        [tex]\Delta X = | \frac{dX}{da}| \Delta a + | \frac{dX}{db} | \Delta b + | \frac{dX}{dc}| \Delta c[/tex]

let's perform the derivatives

        [tex]\frac{dX}{da} = \frac{1}{c}[/tex]

        [tex]\frac{dX}{db} = - \frac{1}{c}[/tex]

        [tex]\frac{dX}{dc} = - \frac{a-b}{c^2}[/tex]

we substitute

remember that the bulk value guarantees that we tune the worst case. So all the mistakes add up

          ΔX = [tex]\frac{1}{c}[/tex]  Δa +

          ΔX = (Δa + Δb) + Δc

we substitute

         ΔX = [tex]\frac{1}{255.4}[/tex]  (0.0002 + 0.001) + [tex]\frac{0.0336-0.010}{255.4^2}[/tex]  0.4

         ΔX = 4.698 10⁻⁶ + 1.45 10⁻⁷

         ΔX = 4.8 10⁻⁶

Absolute errors must be given with a single significant figure

         ΔX = 5 10⁻⁶

The result of the requested quantity using the criterion of significant figures and propagation of errors is

          X ± ΔX = (9.2 ± 0.5) 10⁻⁵

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Answer:

According to archemdes principle ,if an object displace more water that its volume then it will sink in water

As The hollow sphere of same mass have high volume ,so it will float and solid copper with less volume will sink ....

Explanation:

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Answer:The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.

Explanation:

Answer:

Given, kelvin temperature = 300 K

C = K – 273.15

C = 300 – 273.15

C = 26.85

Therefore, 300 Kelvin is equal to a celsius temperature of 26.85 °C

Hope this helps u

Answer: i would do something that is really easy and i will do test 2 where there aint a word problems and i am going 2 put the work 2 where it is 2 there standard i aint going 2 do sum over there standards of science.

Explanation:

Answer:

In my opinion make it fun or take time to think or  make it something that kids wanna do but they are still learning from it.

Answer:

a joule is the unit of work

Explanation:

Answer:

a. applied science

Explanation:

[tex].[/tex]

Answer: Therefore, the instantaneous speed is only the answer, because, the detector can only detect the instantaneous speed but not the average speed.

Explanation:

Answer:

Answer : Force is a physical (magnitude + direction) quantity which is represented as a ratio of change in momentum divided by change in time and is generally told as, force is a push or a pull that can change the state of the motion or can change the shape of the object on which force is applied.

A basic question about how science gains knowledge.

Science gains knowledge using the scientific method.

The first thing you need to understand here is the scientific method, with all the steps and a little explanation to each one.

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Answer:

Through the testing of hypotheses.

Answer:

Displacement

Velocity

Acceleration are the vector quantity....

Explanation:

hope this was helpfull....

Answer:

The potential area of wind power in the country is about 6074 sq. km with wind power density greater than 300 watt/m2. More than 3,000 MW of electricity could be generated at 5 MW per sq km. The commercially viable wind potential of the country is estimated to be only about 448 MW.