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love history [14]
3 years ago
6

A. B. C. D. Please help

Physics
2 answers:
MA_775_DIABLO [31]3 years ago
8 0

Answer:

The answer is A, B, C and D

Explanation:

(is that how it works?)

marissa [1.9K]3 years ago
4 0

Answer:

B

Explanation:

From the question above, you can see in the picture, the first,second ,third models have respectively 4 e in second circle (Carbon), 5 e in second circle(Nitrogen) , 6e in second circle(Oxygen) . So, to maintain the serial, the next model must have 7 e in second circle of the atom which is option B : Fluorine

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A mass attached to a spring is displaced from its equilibrium position by 5cm and released. The system then oscillates in simple
aliina [53]

Answer:

T= 1 s

Explanation:

Given that

When x=  cm ,T= 1

we know that time period of spring mas system given as

T=2\pi \sqrt{\dfrac{m}{k}}

T= Time period

m= mass

k=spring constant

So from above equation we can say that time period of system does not depends on the value of x.

So when x= 10 cm ,still time period will be 1 s.

T= 1 s

5 0
3 years ago
A reaction where the consequences of a reaction cause a succeeding like reaction is called a mass reaction .
Mumz [18]

Answer:

not 100% sure what you were asking.

Explanation:

A reaction where the consequences of a reaction cause a succeeding like reaction is called a <u>chain reaction</u>.

3 0
3 years ago
To prevent accidental electric shock, most electrical equipment is A. painted. B. isolated. C. coated. D. grounded.
Nesterboy [21]
D. It is Grounded below ground 
4 0
3 years ago
Read 2 more answers
A 4-kg block is connected by means of a massless rope to a 2-kg block as shown in the figure. Complete the following statement:
Vinvika [58]
Less than 0.5, but greater than 0
8 0
3 years ago
The first-order decomposition of cyclopropane has a rate constant of 6.7 × 10–4 s–1. If the initial concentration of cyclopropan
Ket [755]

Answer:

.864 M

Explanation:

For first order decomposition,

rate constant k = 1/t x ln a / (a - x )

given , a = 1.33 M , t = 644 s , k = 6.7 x 10⁻⁴ , a - x  = ? = b( let )

6.7 x 10 ⁻⁴ = 1/644 x ln 1.33/b

ln 1.33/b = 6.7 x 10⁻⁴ x 644 = .4315

1.33 / b = e⁰ ⁴³¹⁵ = 1.5395

b = 1.33 / 1.5395 = .864 M.

7 0
3 years ago
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