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grin007 [14]
3 years ago
11

Choose the statement(s) that is/are true about Bohr model of the atom. (i) Electron energies are quantized and they can assume o

nly certain discrete energy values. (ii) An electron receiving extra energy could transfer to a higher energy level. (iii) An electron falling from a high energy level to a low energy level will radiate the excess energy in the form of electromagnetic radiation. (iv) An electron can be stripped off an atom by giving it sufficient energy.
Physics
1 answer:
GuDViN [60]3 years ago
6 0

Answer:

All of the statements are correct corresponding to Bohr's model of atom.

Explanation:

The postulates of Bohr's model of atom are:

1) Electron's revolve around nucleus in stationary states with constant energy levels.

2) The angular momentum of the electrons is quantised.

3) Electron's can change their stationary states by either absorbing energy if it moves to a state of higher energy or emitting radiations if it moves to a lower stationary state from higher state.

4) While revolving in an orbit an electron does not change it's energy.

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3 0
3 years ago
Read 2 more answers
A tortoise travels 15 meters (m) west, then another 13 centimeters (cm) west. How many meters total has she walked?
DENIUS [597]

Answer:

15.13m

Explanation:

change 15m to cm

1m=100cm

15m times 100=1500cm

add 1500+13 = 1513cm

in metres it will be 15.13m

7 0
3 years ago
A is a hot object.  B is a cold object.  the two are brought into contact with each other so that heat is developed
Umnica [9.8K]

Answer:

A) Cold object will start getting hot

B) Heat exchange will stop as the two object acquire the same temperature.

Explanation:

A) When one hot object and one cold object are kept in contact then the heat is transferred from the hot object to the cold object via different modes of heat transmission. Hence, the cold object starts getting hot

B) The transmission of heat from the hot object to the cold object will stop as the temperature of the two object becomes equal to each other.

3 0
3 years ago
What is the reaction for P₄ + 5 O₂ --> 2 P₂O₅
mixas84 [53]

Answer:

Combination or synthesis

Explanation:

The reaction is a combination or synthesis reaction in which two or more substances combines to give a single product.

In such a reaction there is formation of compounds from the union of their constituent elements.

 The driving force for such reactions is the large and negative heat of formation of the product.

So, this is a combination reaction.

7 0
2 years ago
Why do raindrops fall with a constant speed during the later stages of their descents?
BartSMP [9]
Firstly they have a acceleration downwards due the force downwards due they gravitational field acting on it's mass.
as it falls it gains speed, and as it gains speed the air Resistance which is a upward force actin on the drop increases, eventually the rain drop's upward and downward forces are balanced and hence there is no RESULTANT force therefore no acceleration, so the drops falls in constant speed (terminal verlocity is a better term)

Are you wondering that why is the raindrop still moving given that the forces are balanced? If so according to Newton's 1st law an object will keep moving or Remain at rest until a RESULTANT force acts on it.
6 0
3 years ago
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