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yanalaym [24]
3 years ago
10

What two particles in an atom are equal in number

Physics
1 answer:
Ainat [17]3 years ago
8 0
The two particles that are equal in a atom is the proton and electron.
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A 40-cm long string, with one end clamped and the other free to move transversely, is vibrating in its fundamental standing wave
Stella [2.4K]

For the given wave speed, the frequency is 2.0 Hz

<h3>What is frequency?</h3>

The frequency is the number of cycles per second in the sinusoidal wave.

Given is the length of the string L = 40cm, the wave speed v =320 cm/s, then the wavelength is

λ =4L

λ =4 x 40 cm =160 cm.

The frequency is related to the wavelength as

f =v/λ

f =320/160

f=2.0 Hz

Thus, the frequency is 2.0 Hz.

Learn more about frequency.

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3 years ago
Which of the following is WRONG?
iren2701 [21]
It’s D the time period within pendulums are constant, distance is always measured with kilometers within cities and basic unit is always seconds.
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3 years ago
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a teacher drives from school to the mall. then she goes to the doctors office for a physical examination. what is the magnitude
Amanda [17]

The magnitude of the teachers displacement is the difference between

the location of the school and the location of the doctors office

The reason behind the above expression are explained as follows

The known locations of the teacher;

Initial location; The school

Second location; The mall

The eventual location; The doctors office

The required information;

The magnitude of the teachers displacement

The method of obtaining the displacement of the teacher;

Qualitatively, the displacement of the teacher can be obtained by applying the definition of displacement as follows;

The definition of displacement is an object's change in position, given by the difference between its start and finish locations

According to the definition of displacement, therefore, the magnitude of

the teachers displacement is the distance between the school and the

doctors office which is given by the difference between the coordinates of

the location of the school and the location of the doctors office

The magnitude of the displacement of the teacher = The coordinate of the location of the doctors office - The coordinate of the location of the school

Learn more about displacement here;

brainly.com/question/17587058

5 0
3 years ago
Why is respiration an exothermic reaction? A. a large amount of energy is released into its surroundings B. the heat content, q,
Rina8888 [55]
A. a large amount of energy released into its surrounding

During the respiration, glucose molecules are converted to other molecules in a series of steps. They finally end up as as carbon-dioxide and water.

The overall reaction is

<span>C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + 2805 kJ
</span>
The reaction is exothermic reaction because <span>C=O and O-H bonds in the products are so much more stable than the bonds in the reactants.
</span>
Bond energy is the average needed to break a bond.

Some bond energies are:
C-C = 347 kJ/mol
C-H = 413kJ/mol;
C-O = 358 kJ/mol;
O-H = 467 kJ/mol;
O=O = 495 kJ/mol;
<span>C=O = 799 kJ/mol</span>



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3 years ago
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Which is the most likely location in the home for mold growth? A) bathroom windows B) living room furniture C) computer keyboard
FinnZ [79.3K]

Answer:

A

Explanation:

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