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2 years ago

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Describe a scientific method

1 answer:

laila [671]2 years ago

7 0

The process of <u>scientific method</u> involves making hypotheses , driving predictions from them as logical consequences , and then carrying out experiments or empirical observations based on those predictions. A hypotheses is a conjecture , based on knowledge obtained while seeking answers to the questions.

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Term meaning "wise human"

Novay_Z [31]

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3 years ago

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A solid cylindrical object has a mass of 2.0 kg, a diameter

omeli [17]

Answer:

I = 0.0025 kg.m²

Explanation:

Given that

m= 2 kg

Diameter ,d= 0.1 m

Radius , $R=\dfrac{d}{2}$

$R=\dfrac{0.1}{2}$

R=0.05 m

The moment of inertia of the cylinder about it's axis same as the disc and it is given as

$I=\dfrac{mR^2}{2}$

Now by putting the all values

$I=\dfrac{2\times 0.05^2}{2}$

I = 0.0025 kg.m²

Therefore we can say that the moment of inertia of the cylinder will be 0.0025 kg.m².

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2 years ago

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nadezda [96]

Answer:

not really

Explanation:

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2 years ago

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Find the least frequency of incident light that will knock electrons out of the surface of a metal with a work function of 3eV.

mixer [17]

Answer:

The frequency must be: $725\,\,10^{12} \,Hz$

Explanation:

If the work function of the metal ( $\phi$ ) is 3 eV, then we can use the formula for the kinetic energy of an ejected electron:

$KE= h*f-\phi$

considering for the minimum KE = 0, and using the Plank constant h in eV s as: 4.14 * 10 ^(-15) eV s, to solve for the frequency:

$h*f=\phi\\4.14*10^{-15} * f = 3\\f=3*10^{15} /4.14\,\,\frac{1}{s} \\f=725\,10^{12} \,Hz$

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2 years ago

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MAXImum [283]

Answer:

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Explanation:

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2 years ago