3 years ago

Which of the following accurately describes properties of valence?

1 answer:

8 0

The statement that accurately describes properties of valence is A. The smaller the number of electrons an atom has to borrow or to lend, the greater the activity of the atom.

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A basketball with a mass of 1.5 kg is thrown with a force of 21 N at an angle of 60 degrees above the horizontal. What is the ve

sergey [27]

Answer:

b) 12.12 m/s² upwards

Explanation:

∑F = ma

21 sin 60° N = (1.5 kg) a

a = 12.12 m/s²

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4 years ago

If john mom had 4 kids names were mary lary and katie. what is the 4th one name

professor190 [17]

The fourth child would be John.

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3 years ago

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If you graph the average velocity (y-axis) vs. the elapsed time (x-axis), what

Aleks [24]

Answer:

a diagonal line on the graph

Explanation:

the slope would be constant at an increasing rate

y=x

uniform= increasing at a constant rate

4 0

4 years ago

Select the correct answer.

Gelneren [198K]

Answer: It's b and c I got it right

Explanation:

Hope this helped!!!! :)

8 0

3 years ago

An object of mass M oscillates on the end of a spring. To double the period, replace the object with one of mass: (a) 2M. (b)M/2

harkovskaia [24]

Answer:

Explanation:

The system is a loaded spring. The period of a loaded spring is given by

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

m is the mass and k is the spring constant.

It follows that, since k is constant,

$T\propto\sqrt{m}$

$\dfrac{T}{\sqrt{m}} = C$ where C represents a constant.

$\dfrac{T_1}{\sqrt{m_1}} = \dfrac{T_2}{\sqrt{m_2}}$

$m_2 = m_1\left(\dfrac{T_2}{T_1}\right)^2$

When the period is doubled, $T_2 = 2T_1$ .

$m_2 = m_1\left(\dfrac{2T_1}{T_1}\right)^2 = 4m_1$

Hence, the mass is replaced by 4M.

7 0

4 years ago