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pochemuha
3 years ago
11

find by drawing and by caculation the resultant of two vectors 3 units and 4 units inclined to each other at 90 degrees​

Physics
1 answer:
kap26 [50]3 years ago
4 0

The resultant of the two vectors is 5 units (see attachment)

Explanation:

When we have to calculate the resultant of two vectors, we can do the following:

- Graphically, we have to draw the two vectors, connected head-to-tail (this means, the tail of the second vector starts from the head of the first vector). The resultant vector is found by connecting the tail of the first vector to the head of the second vector. In this example, we called A the first vector of 3 units and B the second vector of 4 units: the rresultant vector is shown in the picture as vector R.

- Numerically, we start by noticing that the two vectors are at 90 degrees to each other. Therefore, they form the sides of a right triangle, of which the resultant is the hypothenuse.

Therefore, we can find the resultant by using Pythagorean's theorem. Using

A = 3

B = 4

We find:

R=\sqrt{A^2+B^2}=\sqrt{3^2+4^2}=5

So, the resultant is 5 units.

Learn more about vector addition here:

brainly.com/question/4945130

brainly.com/question/5892298

brainly.com/question/11220787

brainly.com/question/2892784

#LearnwithBrainly

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3 0
3 years ago
The drawing shows an adiabatically isolated cylinder that is divided initially into two identical parts by an adiabatic partitio
Sveta_85 [38]

Answer:

temperature on left side is 1.48 times the temperature on right

Explanation:

GIVEN DATA:

\gamma = 5/3

T1 = 525 K

T2 = 275 K

We know that

P_1 = \frac{nRT_1}{v}

P_2 = \frac{nrT_2}{v}

n and v remain same at both side. so we have

\frac{P_1}{P_2} = \frac{T_1}{T_2} = \frac{525}{275} = \frac{21}{11}

P_1 = \frac{21}{11} P_2 ..............1

let final pressure is P and temp  T_1 {f} and T_2 {f}

P_1^{1-\gamma} T_1^{\gamma} = P^{1 - \gamma}T_1 {f}^{\gamma}

P_1^{-2/3} T_1^{5/3} = P^{-2/3} T_1 {f}^{5/3} ..................2

similarly

P_2^{-2/3} T_2^{5/3} = P^{-2/3} T_2 {f}^{5/3} .............3

divide 2 equation by 3rd equation

\frac{21}{11}^{-2/3} \frac{21}{11}^{5/3} = [\frac{T_1 {f}}{T_2 {f}}]^{5/3}

T_1 {f} = 1.48 T_2 {f}

thus, temperature on left side is 1.48 times the temperature on right

6 0
3 years ago
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miss Akunina [59]

Answer:

Option 2

Explanation:

Weight of the box is being acted downwards due to gravity

However, based on Newton's third law (for every action (force) in nature there is an equal and opposite reaction), an equal force will act on the box by the table

8 0
3 years ago
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A function that assigns a numerical value to each outcome of an experiment is called
kozerog [31]

Random variable

Explanation:

A function that assigns a numerical value to each outcome of an experiment is described as a random variable. Random variables helps to determine the outcome of a random event.

  • Example of a random event is tossing of die, casting of a coin.
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8 0
3 years ago
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Answer:

True.

Explanation:

Total internal reflection is bound to occur when light travels from dense medium to less dense.

From the table given in the question above, we obtained:

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From the above, Crown glass has a lower refractive index when compared to Asphalt. This means that Crown glass is less dense than Asphalt.

Therefore, total internal reflection will not occur when light travels from Crown glass to Asphalt because Crown glass is less dense than Asphalt.

7 0
3 years ago
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