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Answer: I've solved the above questions and attached pictures too which show the working for better understanding of the questions.

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T = 2π√(L/g)

For earth , g ~ 10

18.9 = 2×3.14 √(L/g)

9 = L/g

L = 90 metres

Answer:

88m

Explanation:

T=2π*[tex]\sqrt{L/g}[/tex]-->Τ/2π=[tex]\sqrt{L/g}[/tex]-->18.9/2π=[tex]\sqrt{L/g}[/tex]-->3=[tex]\sqrt{L/g}[/tex]-->3^2=L/g-->9=L/9.8

so L=9*9.8-->L≈88m

Positioning your Slinky along any direction different from its initial position will affect your reading, because there will be change in the magnetic field.

If the Slinky is made of an iron alloy, it can be magnetized by itself. Moving the Slinky around can cause a change in the magnetic field, even if no current is flowing.

When there is a change in the magnetic field, the reading changes.

At any point, you change the orientation of the Slinky, you will need to zero the reading or adjust the Slinky back to its initial position, even if the sensor does not move.

Thus, Positioning your Slinky along any direction that is different to its initial position will affect your reading because there will be change in the magnetic field.

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Answer:

anything that contains atoms is the correct answer of given statement

2160 watts

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Answer:

Take north as y and west as -x.

distance=√(x^2+y^2)

displacement= tan theta(tan^-1) (y/x)

answers should be, (9.85m, 66.04°)

Answer:

Sulfur trioxide is a colourless compound that exists at room temperature either as a volatile liquid or in any of three allotropic solid forms. What is SO2 and SO3? SO2 is sulfur dioxide which is a gaseous compound formed from sulfur and oxygen atoms. The melting point and the boiling point are -71℃ and -10℃respectively.

Explanation:

Answer:

3 14/3

Explanation:

you put a 1 under the 7 then times it with 3 2/3 and you get 3 14/3

Answer:

The answer will be it has a mass of 40 kg.

Explanation:

Because Force = mass x acceleration or F = m a, we can say Force divided by mass or F/a = m or mass so 600 divided by 15 equals 40 kg.

Answer:

See below

Explanation:

rho = R A/l     R = resistance   A = cross sectional area l = length

Answer:

The north end of the  magnet will be attracted to the south end of the horseshoe magnet.

Likewise, the north end of the magnet will be attracted to the earth's north pole - so the north pole of the earth is actually a south magnetic pole.

Answer:

it A i think

hope that helps if not i can change it

Explanation:

Answer:

It takes total 248 years for Pluto to orbit the sun.

Pluto will take 253 year to orbit the sun.

Earth's average distance to the Sun is about 93 million miles (150 million kilometers) from the Sun.

Pluto has a semi-major axis distance a=40 then T2=403, which gives T=253 years.

Therefore, Pluto will take 253 year to orbit the sun.

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The distance between lines on a diffraction grating that produces a second-order maximum for 760-nm red light at an angle of 60.0º will be 0.0000034 m.

A diffraction grating is a type of optical instrument obtained with a continuous pattern. The pattern of the diffracted light by a grating depends on the structure and number of elements present.

The distance between lines on a diffraction grating that produces a second-order maximum for 760-nm red light at an angle of 60.0º is;

The equation of diffraction grating is given as;

[tex]\rm d sin \theta = n \lambda \\\\ dsin60=2 \times 760 \times 10^{-9} \\\\ d=0.00000304 \ m[/tex]

Hence,he distance between lines on a diffraction grating that produces a second-order maximum for 760-nm red light at an angle of 60.0º will be 0.0000034 m.

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Answer:

According to the question,

Initial velocity of car (at t=0) = 10 m/s

Final velocity of car (after 15 sec) = 40m/s

Time taken = 15 sec.

Now use, first equation of motion viz.

Explanation:

v = u + at.

40 = 10 + a *15

30 = a*15

a = 30/15

a = 2 m/sec square.

Use the right equation. To calculate the normal force of an object at an angle, you need to use the formula: N = m * g * cos (x) For this equation, N refers to the normal force, m refers to the object's mass, g refers to the acceleration of gravity, and x refers to the angle of incline.

The vertical and the horizontal component of the velocity are 216.51 m/s and 125 m/s respectively.

Velocity is the rate of change of displacement.

To calculate the horizontal component of the projectile we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Similarly, to calculate the vertical velocity, we use the formula below

Where:

Also Substitute the values into equation 2

Hence, the vertical and the horizontal component of the velocity are 216.51 m/s and 125 m/s respectively.

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Answer:

the doppler effect shows stars with red shifted light

Explanation:

light from a receding star is shifted toward red or redshifted

redshift is an example of the doppler effect

the wavelength of the light is stretched so the light is seen as shifted towards the red part of the spectrum

Answer:

Explanation:

Force of Tension = (m)(g)

120 = (m)(9.8)

m = volume(density)

120 = (4/3)πr³(0.308)(9.8)

[tex]\frac{(120)(3)}{(pi)(0.308)(9.8)}[/tex] = r^3

solve

The radius of the brass ball is equal to 6.94 × 10⁻² m when the tension in the wire is 120 N.

Tension can be demonstrated as the pulling force transmitted by the means of a string, or a rope or can be described as the action-reaction pair of forces acting at each end of said elements.

The tension in the wire attached to the ceiling will be given by:

T = mg ⇒m = T/g

The radius of the brass ball is given by: [tex]r =\sqrt[3]{\frac{3V}{4\pi } }[/tex]

The density is given by: ρ = m/V = T/gV

V = T/gρ

Therefore, the expression for the radius can be written as:

[tex]r =\sqrt[3]{\frac{3T}{4\pi\rho g } }[/tex]

Given the tension in the wire, T = 120 N

The density of the brass is = 8730 Kg/m³

[tex]r =\sqrt[3]{\frac{3\times 120}{4\times 3.14 \times 8730 \times 9.81 } }[/tex]

r = 6.94 × 10⁻² m

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Answer:

celebrating different points.

Explanation:

adds more information to what your talking about

Answer:

Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes

Explanation:

Answer:

-2.25 metres per second squared

Answer:

the answer is equal to 1.6N/C

When the spring is replaced with a spring with double of initial spring constant k2 = 2k₁, the new period, T2, is [tex]\sqrt{\frac{1}{2} } \ T_1[/tex].

The period of the oscillation of the mass or cart on the spring is given by the following formula;

[tex]T = 2\pi \sqrt{\frac{m}{k} } \\\\[/tex]

at a costant mass;

[tex]T_1\sqrt{k_1} = T_2\sqrt{k_2} \\\\T_2 = \frac{T_1\sqrt{k_1} }{\sqrt{k_2} }[/tex]

when spring constant is doubled, k2 = 2k1. the new period, T2 is determined as follows;

[tex]T_2 = \frac{T_1\sqrt{k_1} }{\sqrt{2k_1} } \\\\T_2 = \frac{T_1\sqrt{k_1} }{\sqrt{2} \times \sqrt{k_1} } \\\\T_2 = \frac{T_1}{\sqrt{2} }\\\\T_2 = \sqrt{\frac{1}{2} } \ T_1[/tex]

Thus, when the spring is replaced with a spring with double of initial spring constant k2 = 2k₁, the new period, T2, is [tex]\sqrt{\frac{1}{2} } \ T_1[/tex].

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Answer: A literature review consists of an overview, a summary, and an evaluation (“critique”) of the current state of knowledge about a specific area of research.

Explanation: