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3 years ago

What is an important trend you would notice about the elements as you move from left to right?

Physics

2 answers:

leonid [27]3 years ago

5 0

Answer:

From left to right, the electrons are more tightly held by the nucleus, causing the atoms to be smaller and the ionization energy to be higher.

Explanation:

Go to http://dl.clackamas.edu/ch104/lesson6periodictrends.html for more information.

andrezito [222]3 years ago

3 0

Answer:

From left to right across a period of elements, electronegativity increases. If the valence shell of an atom is less than half full, it requires less energy to lose an electron than to gain one.

Explanation:

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A 25-g string is stretched with a tension of 43 N between two fixed points 12 m apart. What is the frequency of the second harmo

Svetllana [295]

Answer:

The frequency of the second harmonic ( $2f_o$ ) is 11.97 Hz.

Explanation:

Given;

mass of the string, m = 25 g = 0.025kg

tension on the string, T = 43 N

length of the string, L = 12 m

The speed of wave on the string is given as;

$v = \sqrt{\frac{T}{\mu} }$

where;

μ is mass per unit length = 0.025 / 12 = 0.002083 kg/m

$v = \sqrt{\frac{43}{0.002083} }\\\\v = 143.678 \ m/s$

The wavelength of the first harmonic wave is given as;

$L = \frac{1}{2} \lambda _o\\\\\lambda _o = 2L \\\\\lambda _o = 2 \ \times \ 12\\\\\lambda _o = 24 \ m$

The frequency of the first harmonic is given as;

$f_o = \frac{v}{\lambda _o} = \frac{v}{2L} = \frac{143.678}{24} = 5.99 \ Hz\\\\$

The wavelength of the second harmonic wave is given as;

$L = \lambda_1 \\\\\lambda_1 = 12 \ m$

The frequency of the second harmonic is given as;

$f_1 = \frac{v}{\lambda _1} = \frac{143.678}{12} = 11.97 \ Hz = 2(\frac{v}{\lambda _0}) = 2f_o$

Therefore, the frequency of the second harmonic ( $2f_o$ ) is 11.97 Hz.

8 0

3 years ago

The acceleration of a bus is given by ax (t) = at, where a = 1.2 m/s3.If the bus's velocity at time t = 1.0s is 5.0 m/s, what is

goldenfox [79]

We are given the acceleration of the bus as a function of time:

a(t) = 1.2t

Let the velocity also be a function of time v(t).

Since a(t) is the change of v(t) over time, we can use the fundamental theorem of calculus to determine the velocity at t = 2s, or v(2), given that:

a(t) = 1.2t

v(1) = 5

v(2) - v(1) = $\int\limits^2_1{a(t)}\,dt$

v(2) - 5 = $\int\limits^2_1{1.2t}\,dt$

v(2) - 5 = 0.6t² evaluated between t = 1 and t = 2

v(2) - 5 = 0.6(4) - 0.6(1)

v(2) = 1.8 + 5

v(2) = 6.8m/s

3 0

3 years ago

Help ASAP please I can’t figure it out and it’s making me stressed

marysya [2.9K]

Explanation:

may I ask what it is on because I might be able to help out

5 0

3 years ago

According to our theory of solar system formation, why did uranus and neptune end up to be much less massive than jupiter and sa

omeli [17]

Particles in the solar nebula were more spread out at greater distances, so that accretion took longer and there was less time to pull in gas before the solar wind cleared the nebula.

8 0

3 years ago

A plane with a mass of 6,800 kg is moving at a speed of 55.0 m/s. What is the kinetic energy of the plane?

ioda

The kinetic energy of plane is 10285000 J

Kinetic energy is defined as the energy possed by an object in motion. The mathematical representation of kinetic energy is given below:

Where:

KE is the kinetic energy

m is the mass of the object

v is the velocity of the object.

With the above formula, we can obtain kinetic energy of the plane as follow:

Mass (m) = 6800 kg

Velocity (v) = 55.0 m/s

<h3>Kinetic energy (KE) =? </h3>

KE = ½mv²

KE = ½ × 6800 × 55²

KE = 3400 × 3025

Therefore, the kinetic energy of plane is 10285000 J

Learn more: brainly.com/question/24713075

7 0

2 years ago

Read 2 more answers