3 years ago

State keplers law........

1 answer:

4 0

Answer:

There are actually three, Kepler's laws that is, of planetary motion: 1) every planet's orbit is an ellipse with the Sun at a focus; 2) a line joining the Sun and a planet sweeps out equal areas in equal times; and 3) the square of a planet's orbital period is proportional to the cube of the semi-major axis of its

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A tube closed at one end is used to determine the speed of sound in air. The resonances occur every 32 cm when a 530-Hz tuning f

soldi70 [24.7K]

Answer:169.6m/s

Explanation:

Wavelength=32cm=0.32m

Frequency=580Hz

Velocity=frequency x wavelength

Velocity=580x0.32

Velocity=169.6m/s

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3 years ago

Calculate the nuclear binding energy per nucleon for 136^Ba if its nuclear mass is 135.905 amu.

kompoz [17]

Answer:

1.312 x 10⁻¹² J/nucleon

Explanation:

mass of ¹³⁶Ba = 135.905 amu

¹³⁶Ba contain 56 proton and 80 neutron

mass of proton = 1.00728 amu

mass of neutron = 1.00867 amu

mass of ¹³⁶Ba = 56 x 1.00728 amu + 80 x 1.00867 amu

= 137.10128 amu

mass defect = 137.10128 - 135.905

= 1.19628 amu

mass defect = 1.19628 x 1.66 x 10⁻²⁷ Kg

= 1.9858 x 10⁻²⁷ Kg

speed of light = 3 x 10⁸ m/s

binding energy,

E = mass defect x c²

E = 1.9858 x 10⁻²⁷ x (3 x 10⁸)²

E = 17.87 x 10⁻¹¹ J/atom

now,

binding energy per nucleon = $\dfrac{17.87\times 10^{-11}}{136}$

= 0.1312 x 10⁻¹¹ J/nucleon

= 1.312 x 10⁻¹² J/nucleon

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3 years ago

The si unit of torque

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is Newton metre N m (m2 kg s-2).

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3 years ago

What step in the rock cycle would be required to change granite into sandstone?

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<span>Granite particles settle on the ocean floor.

sources: </span>https://quizlet.com/17656464/rocks-minerals-quiz-full-flash-cards/

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3 years ago

Shelli is a student describing the resonance of a metal beam. She demonstrates that the sound dims when the beam is vibrated at

ArbitrLikvidat [17]

Shelli will most likely say that the sound produced by the resonance of a metal is affected by the frequency at which the metal is vibrated. There is a certain frequency that will create a dim sound. If the frequency is changed to the right setting, the sound will intensify.

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4 years ago

State keplers law........​

State keplers law........