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3 years ago

Which of the following is a unit of heat? 1. Fahrenheit 2. Energy 3. Joule 4. Celsius

Chemistry

2 answers:

ELEN [110]3 years ago

6 0

The unit of heat is Joule

satela [25.4K]3 years ago

3 0

Answer : The correct option is, (3) Joule

Explanation :

S.I : It is known as the international System of Units. It is a scientific method to express the magnitude of the several basics units.

There are seven basic units in the system from which the other units are derived.

The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

As per question, the unit of is joule.

Fahrenheit and Celsius are the unit of temperature.

Hence, the unit of heat is, (3) Joule

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Answer:
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4 years ago

Using de Broglie's equation, λ = h/mv which would have a larger wavelength, a slow-moving proton or a fast-moving golf ball? Exp

tatuchka [14]

Answer: Proton will have larger wavelength

Explanation:

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$\lambda =\text{wavelenght of the particle}$

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m= mass of the particle

v= velocity of the particle

As we can see from the de-Broglie's equation , that wavelength is inversely proportional to the product of mass into velocity of the object.

The wavelength of proton will be higher than that fast moving golf ball because mass of proton $(1.67 \times 10^{-24}g)$ is very small than that of the golf ball (45.93 g). Proton is moving at slow velocity and the golf ball is moving with fast velocity by which value of product of mass into velocity of proton will be lower than the value of product of mass into velocity of the golf ball which will result in larger value of wavelength of the proton.

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