Class 12th

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New answer posted

8 months ago

0 Follower 13 Views

A
alok kumar singh

Contributor-Level 10

Object is moving in upward direction with constant velocity so in upward motion (+2N) and for downward motion (-2N) So option (1) is correct representation.

 

New answer posted

8 months ago

The passage below is accompanied by a set of questions. Choose the best answer to each question.

The government has made two crucial clarifications on the e-auction process for captive coal blocks in order to make them more attractive to potential bidders. According to the changes introduced by the coal ministry, existing or upcoming power plants that don't have power purchase agreements (PPAs) with buyers of electricity will also be eligible to bid for the coal blocks. Also, the reserve price 100/tonne payable by the successful bidder will be included in the energy charge, which means that fuel cost that will be passed through to cons

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A
alok kumar singh

Contributor-Level 10

The last option can be directly generalized from the lines “Apart from the scarcity of coal that has led to more than 15,000 MW of generation capacity not being able to sign coal linkage pact with Coal India”.

New answer posted

8 months ago

Direction (1-10): The passage below is accompanied by a set of questions. Choose the best answer to each question.

The government has made two crucial clarifications on the e-auction process for captive coal blocks in order to make them more attractive to potential bidders. According to the changes introduced by the coal ministry, existing or upcoming power plants that don't have power purchase agreements (PPAs) with buyers of electricity will also be eligible to bid for the coal blocks. Also, the reserve price 100/tonne payable by the successful bidder will be included in the energy charge, which means that fuel cost that will be pass

...more
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

As mentioned in the last paragraph “For merchant power, the reserve price is higher;”. Hence, the correct choice will be C.

New answer posted

8 months ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Work done is equal to change in K.E.

S o W 1 + W 2 = 1 2 M ( 0 . 8 g h ) 2 0 W1 -> work done by mg

m g h + W 2 = 1 2 m * 0 . 6 4 g h  W2 -> work done by air friction

W 2 = 0 . 3 2 m g h m g h = 0 . 6 8 m g h              

W2 = -0.68 mgh

New answer posted

8 months ago

There is a sentence that is missing in the paragraph below. Look at the paragraph and decide in which blank (option 1, 2, 3, or 4) the following sentence would best fit.

Sentence: Roughly speaking, for every 10% increase in energy, the number of cosmic rays per unit area falls by a factor of 1000.

Cosmic Ray energies span a truly enormous range, from about 107 eV through to 1020 eV, but at higher energies the numbers of cosmic rays drop off dramatically. (1) __________.

Since cosmic rays are charged particles whose paths are affected by magnetic fields, determining where they originate is a challenge, and for the most part, an unsolved

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0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

The introductory line of the given passage shares some facts related to range of the cosmic rays. Contextually, the given sentence fits best in the firs blank only.

New answer posted

8 months ago

0 Follower 1 View

S
Syed Aquib Ur Rahman

Contributor-Level 10

Schrödinger's wave equation explains the microscopic world that governs chemistry, electronics, and modern technology. It's basically how our digital world actually functions at the atomic level.

New answer posted

8 months ago

There is a sentence that is missing in the paragraph below. Look at the paragraph and decide in which blank (option 1, 2, 3, or 4) the following sentence would best fit.

Sentence: Moreover, due to the rising demand from the population, textile goods have increased, and textile mills and their wastewater have risen proportionately, leading the planet to have a big pollution problem.

 

The textile industry is indeed one of the world's most significant sectors. (1) ____________. This sector employs people without any extraordinary skill, which plays a crucial role in employment in developing countries, namely, Bangladesh, Vietnam, Pa

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0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

The sentence after the third blank elaborates the fact stated in the given sentence.

New answer posted

8 months ago

0 Follower 1 View

S
Syed Aquib Ur Rahman

Contributor-Level 10

Computer chips, lasers, MRI machines, LED lights, and solar panels all rely on quantum effects that this equation of Schrodinger helps us understand and design.

New answer posted

8 months ago

0 Follower 34 Views

A
alok kumar singh

Contributor-Level 10

Suppose acceleration of wedge is a and acceleration of block w. r.t. wedge is a1 then N cos60° = Ma = 16 a -> N = 32 a

For block w.r.t. wedge

N + 8a sin 30° = 8g cos 30°

N = 8g cos 30° - 8a sin 30°

->32a = 8g cos 30° - 8a sin 30°

->a = 3 9 g  

Now for 8 kg,

8 g s i n 3 0 ° + 8 a c o s 3 0 ° = m a 1  

a 1 = g * 1 2 + 3 9 g * 3 2  


= 2 3 g  

 

New answer posted

8 months ago

0 Follower 2 Views

S
Syed Aquib Ur Rahman

Contributor-Level 10

The Schrodinger wave equation is the foundation of quantum mechanics. Without it, we couldn't understand how atoms work or predict the behaviour of electrons in materials.

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