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Tju [1.3M]
3 years ago
13

Mark the false statements.

Physics
1 answer:
UkoKoshka [18]3 years ago
6 0

Answer:

false statement are C , F , D.

Explanation:

false statement are C , F , D.

a) triple bond consist of two π bond  and  one sigma bond.

b) in double bond one bond is σ bond and one is π bond.

c) end to end overlapping is in  σ bond and electron density  in  σ bond lie between the nuclei.

true statements are  A, B , E.

π bond restrict rotation is correct and then the statement of bond formation between s orbital is σ bond.

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Answer:

A.

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Un carro de montaña rusa parte del reposo desde una primera cumbre, desciende una distancia vertical de 45 metros y luego sube u
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A roller coaster car starts from the rest from a first summit, descends a vertical distance of 45 meters and then climbs a second summit, reaching the top with a speed of 15m / s. How high is the second summit? Do not consider friction


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3 years ago
A bullet of mass m=26g is fired into a wooden block of mass M=4.7kg. The block is attached to a string of length 1.5m. The bulle
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Answer:

u = 449 m/s

Explanation:

Given,

Mass of the bullet, m = 26 g

Mass of the wooden block,M = 4.7 Kg

height of the block,h = 0.31 m

initial speed of the block, u = ?

Using conservation of energy

(M+ m)gh = \dfrac{1}{2}(M+m)v^2

gh = \dfrac{1}{2}v^2

v=\sqrt{2gh}

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v = 2.47 m/s

Now, using conservation of momentum to calculate the speed of the bullet.

m u + M u' = (M+m)v

m u  = (M+m)v

0.026 x u  = (4.7+0.026) x 2.47

u = 449 m/s

Hence, the speed of the bullet is equal to 449 m/s.

5 0
3 years ago
When Mendeleev organized elements in his periodic table in order of increasing mass, similar elements with similar properties we
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Why can concave mirror is used in cosmetic mirror​
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