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umka21 [38]
3 years ago
12

Atomic size decreases across a period due to an increase in the effective nuclear charge. true or false

Physics
1 answer:
alexgriva [62]3 years ago
3 0

Answer: True

Explanation:

Along a period from left to right  the atomic size decreases because all the electrons are subsequently added to the same shell, also the equal no. of protons are added to the nucleus leading to the increase in the net effective nuclear charge at the constant distance. This leads to the increase in the force of attraction between the (opposite) charged particles which shrinks the atomic size.

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Vector B has x, y, and z components of 2.2, 6.6, and 5.5 units, respectively.
Aloiza [94]

Answer:

8.9 units

Explanation:

The magnitude of a 3-D vector B can be calculated by using the formula:

|B| = \sqrt{B_x^2+B_y^2+B_z^2}

where B_x, B_y, B_z are the x, y and z components of the vector, respectively.

For the vector in the problem:

B_x = 2.2\\B_y = 6.6\\B_z = 5.5

Substituting into the equation, we find the magnitude of B:

B=\sqrt{2.2^2+6.6^2+5.5^2}=8.9

So, the magnitude of B is 8.9 units.

3 0
3 years ago
A condition often referred to as being double jointed is an example of
Makovka662 [10]
It is an example of Hypermobility.
4 0
3 years ago
(1) Differentiate EN with respect to r, and then set the resulting expression equal to zero, since the curve of EN versus r is a
Shtirlitz [24]

Answer: The continuation and the last part of the question is  (3) Determine the expression for E0 by substitution of r0 into the above equation for EN. What is the equation that represents the expression for E0?

Explanation:

The detailed steps and appropriate derivation and by differentiation is shown in the attachment.

The knowledge of differential calculus is applied.

5 0
3 years ago
What are Sir Issac Newton's three laws of motion?
Likurg_2 [28]
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The third law is that for every action there is an equal and opposite reaction.  every interaction there is a pair of forces acting on the two interacting objects. the size of forces on the first object equals the size of the force on the second object. 

Hope this helps :) 

can you please make this the brainliest answer it would really help . Thanks
4 0
3 years ago
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Mindy places a strip of zinc in a copper sulfate solution, as shown in the
mr Goodwill [35]

Answer:

C. The concentration of the copper sulfate is too low

Explanation:

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3 years ago
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