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Answer:

(1)

H² = B² × L²

H² = (9.2)² × (5.2)²

H² = 84.64 × 27.04

H² = 2288.6656

H = √ 2288.6656

H = 47.84

Answer:

Use Pythagorean theorem

19) A² + B² = C²

5.2² + 9.2² = C²

C = √111.68

C = 10.567875...

C ≈ 10.6

21) A² + B² = C²

B² = C² - A²

B² = 7.2² - 5.3²

B = √23.75

B = 4.873397...

B ≈ 4.9

Answer:                                                                                                                     It states that an object in motion will stay in motion, and an object at rest will stay at rest unless acted upon by an unbalanced force.

Explanation:

hope i helped

Answer: A object that is currently in motion will stay at motion. The law of interia is also known as Newton's first law of motion.

Explanation:

The Answers are in attachment.

We have to convert 12.7nm to cm

[tex]\\ \sf\longmapsto 12.7nm[/tex]

[tex]\\ \sf\longmapsto 12.7\times 10^{-9}m[/tex]

[tex]\\ \sf\longmapsto 0.127\times 10^{-7}m[/tex]

[tex]\\ \sf\longmapsto 0.00000127\times 10^{-2}[/tex]

[tex]\\ \sf\longmapsto 0.0000013cm[/tex]

Answer:

3.03

Explanation:

time=distance/speed

1km=1000m

1000÷330

=3.030

Answer: Dog's speed = (20 + 35) /12 = 4.583 m/s

Dog's velocity = (20-35)/12 = -1.25 m/s

Explanation: Speed is a scalar quantity so we don't care about direction which means we add the magnitude of both the directions i.e. east and west.

About the velocity, it's a vector quantity. So, we must be very careful with the directions and signs. In cartesian coordinates system, we generally take the right side of origin as the positive x-axis and the left side of origin as the negative x-axis. So, considering the same fact, we consider east as positive side and west as the negative side.

Therefore, when we add 20m + (-35m), we get = -15m and you already have the time period of  12 s.

Answer:

kilogram

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: The acceleration due to gravity increases the velocity of a falling object by 9.8 m/s per

second. Answer B is wrong because velocity increases. Answer C is wrong because the

distance increases every second. Ans. E is wrong because the derivative of distance with

respect to time gives the velocity, not the acceleration.

Explanation:

Answer:

0.58

Explanation:

Sinẞ = opposite ÷ hypotenuse

Sinẞ = 5 ÷ 8.6

Sinẞ = 0.5814

Sinẞ ≈ 0.58

Answer:    0.58

Explanation:

hope this helps

Fun Fact: Peanuts aren’t technically nuts

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.

If you want to learn more, you can read:

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Answer:

Through the testing of hypotheses.

Explanation:

A practical machine is a simple machine that losses energy and have parts that have weights, friction and it causes some loss of work done.

Military personnel also use periscopes in some gun turrets and in armoured vehicles. More complex periscopes using prisms or advanced fibre optics instead of mirrors and providing magnification operate on submarines and in various fields of science

Answer:

Frequency = 100 Hz

Time period = 0.01 sec

Explanation:

f= 3500/35 = 100

T = 1/f = .01

Answer:

1) ironing a shirt 2) writing on surfaces 3) working of an eraser

Answer:

W = F × d

W = 15 × 3

W = 45 Joules

[tex]\\ \rm\longmapsto I=\dfrac{Q}{t}[/tex]

[tex]\\ \rm\longmapsto Q=It[/tex]

[tex]\\ \rm\longmapsto Q=2.72\times 9.88[/tex]

[tex]\\ \rm\longmapsto Q=26.87C[/tex]

The amount of charge that flows past a point in the wire during that time is approximately 26.8976 Coulombs.

Electric charge is quantized, meaning it exists in discrete amounts and is measured in coulombs (C). The elementary charge, represented by the symbol "e," is the charge of a single proton or electron, approximately equal to 1.602 x 10^-19 coulombs. Protons carry a positive charge, while electrons carry an equal but opposite negative charge.

When electric charges are stationary, they create an electric field around them. When charges are in motion, they produce a magnetic field in addition to the electric field, leading to electromagnetic effects.

Charge is a fundamental property of matter that determines its interaction with electric and magnetic fields and is crucial to understanding and explaining various electrical and electromagnetic phenomena in the natural world.

To calculate the amount of charge that flows past a point in the wire use the equation:

Q = I * t

Where:

Q is the charge (in Coulombs)

I is the current (in Amperes)

t is the time (in seconds)

Given:

Current (I) = 2.72 A

Time (t) = 9.88 s

Substitute these values into the equation to find the charge:

Q = I t

Q = 2.72 A * 9.88 s

Calculating the product:

Q = 26.8976 C

Therefore, the amount of charge that flows past a point in the wire during that time is approximately 26.8976 Coulombs.

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Answer: Observation (≧▽≦)

Explanation: An observation is what you noticed. That being said i noticed "The house collapsed at the same time that the poles fell down." //Hope this helped ≧▽≦//

explanation:

Here,

Using Formula;

v = u + at

or, 7 = 0 + (6.6*t)

or, 7 = 6.6t

or 7/6.6 = t

or, t = 1.06s

I think it will help you....

Answer:

Accuracy is how close a measured value is to an accepted value. Precision is how close measurements are to one another. To make measurements, you have to evaluate both the accuracy and the precision to get a correct value.

Answer: As the temperature increases, the flow time increases.

Explanation: i took the test

The relationship between the variables on this graph is that As the temperature increases, the flow time increases, therefore the correct answer is option B.

It is a scale of temperature used to measure the temperature, the kelvin scale of temperature is also known as the absolute scale of temperature.

The Standard International unit of thermodynamic temperature is the kelvin, often known less frequently as the degree Kelvin. The formal definition of one kelvin is 1/273.16  of the thermodynamic temperature of pure water's triple point.

As shown in the graph as the temperature increase across the X axis the flow time is increasing as well, these two variables are directly proportional to each other.

Thus, The graph shows a link between the variables, showing that when the temperature rises, flow time also rises, hence option B is the proper response.

Learn more about the kelvin scale of temperature from here,

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The absolute zero temperature is the smallest thermodynamic thermal limit, which is considered as a zero kelvin when the enthalpy, as well as the entropy of a cooled ideal gas, are of minimal value.

It is expressed by using the formula:

[tex]\mathbf{T_{abs} = T_N + k}[/tex]

where;

[tex]\mathbf{T_{abs } = absoulte \ temperature}[/tex]

[tex]\mathbf{T_N = temperature \ at \Neptune \ Scale}[/tex]

k = factor to convert temperature from absolute scale to Neptunian scale

N:B: An absolute temperature = zero (0) kelvin

From the information given, Using Ideal gas since it is used in Neptune:

PV = nRT

where;

From the question, provided that the gas is the same and no new mass is added;

Then, we can equate the moles of gas in the given conditions as;

[tex]\mathbf{\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}....\dfrac{P_nV_n}{T_n}}[/tex]

Using:

[tex]\mathbf{\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}}[/tex]

where the value of;

P₁V₁ = 28 dm³ atm

T₁ = 0⁰ N

P₂V₂ = 40dm³ atm

T₂ =  100⁰ N

∴

[tex]\mathbf{\dfrac{28}{(0+K)}=\dfrac{40}{(K+100)}}[/tex]

By cross multiply;

28(K+100) = 40(0+K)

28K + 2800  = 0 + 40K

40K - 28K = 2800

12 K = 2800

K = 2800/12

K = 233.33° N

Recall that:

[tex]\mathbf{T_{abs} = T_N + k}[/tex]

[tex]\mathbf{0= T_N+ 233.33 ^0 N}[/tex]

[tex]\mathbf{ T_N= - 233.33 ^0 N}[/tex]

Therefore, we can conclude that the value of the absolute zero of temperature on their temperature scale is -233.33° N

Learn more about absolute zero temperature here:

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Answer:

The coil spring of a wind-up clock.

An archer's stretched bow.

Explanation:

Answer:

Explanation:

V=k*q/r

V= (9*10⁹) * 5*10⁷/2

V = 9*10⁹ * 25*10⁶

V = 225*10¹⁵

Answer:

C

Explanation:

The correct definition is distance / time, although teachers like to mix you up sometimes. A question like "How many minutes per mile does it take to go 3miles in 20 minutes?" In this question, the units are upside down.

The standard answer is what is the rate of speed when when 3 miles are covered in 2 hours.

Here the answer is 3/2 = 1.5 miles / hour which is the standard way of writing speed or rate. distance / time.