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3 years ago

2. A 5 year old child pushes with a force of 5 N to get a sumo wrestler to move, but the

Physics

1 answer:

Svetllana [295]3 years ago

6 0

formula= W=f*d

w=work done

f=force

d=distance

w=f*d

w= 5n*0(does not budge)means does not move so distance is zero

w=5J

The work done by the children on the sumo wrestler is 5J

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if a diffraction grating produces a third-order bright spot for red light (of wavelength 650 nm ) at 68.0 ∘ from the central max

Mashutka [201]

Answer:

The angle is 25.34°.

Explanation:

Given that,

Wave length = 650 nm

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We need to calculate the distance

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$d=\dfrac{2\times650\times10^{-9}}{\sin68.0}$

$d=2.10\times10^{-6}\ m$

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Using formula for angle

$d\sin\theta=m\lambda$

$\sin\theta=\dfrac{m\times\lambda}{d}$

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$\sin\theta=25.34^{\circ}$

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3 years ago

The density of lead is 11.3 g/cm 3. What mass of lead is required to make a 1 cm 3 fishing sinker?

Aliun [14]

Answer:

11.3 g

Explanation:

given,

density of the lead = 11.3 g/cm³

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3 years ago

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The maximum amount of work that can be extracted is equal to the changein Gibbs free energy___________.

steposvetlana [31]

Answer:

The statement is true

Explanation:

The Gibbs free energy is defined as:

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Where ΔH : Change in the enthalpy

T : The temperature

ΔS : Change in the entropy

And the Gibbs free energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure.

If the thermodynamic process is isothermal and isobaric, then the statement is true.

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4 years ago

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sesenic [268]

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4 years ago