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3 years ago

13

10 solve the following humeric problem - S. a What is the lift height of salu? T. object energy required to 25 kg to mass of a 1

0 m.

1 answer:

Salsk061 [2.6K]3 years ago

6 0

Mass=m=25kg
Height=h=10m
Acceleration due to gravity=g=10m/s^2

$\boxed{\sf E_P=mgh}$

$\\ \sf\longmapsto E_P=25(10)(10)$

$\\ \sf\longmapsto E_P=25(100)$

$\\ \sf\longmapsto E_P=2500J$

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Find the average force exerted by the bat on the ball if the two are in contact for 0.00129 s. Answer in units of N.

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Answer:

Explanation:

Given

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Answer:

a. (a) grating A has more lines/mm; (b) the first maximum less than 1 meter away from the center

Explanation:

Let n₁ and n₂ be no of lines per unit length of grating A and B respectively.

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Distance of first maxima for green light

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Distance of first maxima for red light

= λ₂ D/ d₂

Given that

λ₁ D/ d₁ = λ₂ D/ d₂

λ₁ / d₁ = λ₂ / d₂

λ₁ / λ₂ = d₁ / d₂

But

λ₁ < λ₂

d₁ < d₂

Therefore no of lines per unit length of grating A will be more because

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If grating B is illuminated with green light first maxima will be at distance

λ₁ D/ d₂

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λ₁ D/ d₂ < λ₂ D/ d₂

λ₁ D/ d₂ < 1 m

In this case position of first maxima will be less than 1 meter.

Option a is correct .

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Which best describes the transition from gas to liquid?

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irina1246 [14]

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At any angular speed, a certain uniform solid sphere of diameter D has half as much rotational kinetic energy as a certain unifo

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Answer:

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= $1/2 *2/3 M_{hs}(\frac{D}{2})^2* \omega^2$

NOW,the kinetic energy of solid sphere= 1/2 kinetic energy of hallow sphere

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