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madam [21]
3 years ago
5

Identify the constants and variables in 2cm +4y​

Physics
1 answer:
Harman [31]3 years ago
4 0

constant = 2 and 4

variable = y

Explanation:

A constant is usually a symbol with a known value. In the expression, the constants are 2 and 4.

Their values are accurately known.

A variable is place holder and the value is not known. Variables are not static. They can take different numerical values as defined by an equation:

                 2cm +4y​

  the cm is the a unit

      2 and 4 are constants

          y is a variable that can assume any value

Learn more:

Experiment brainly.com/question/1621519

#learnwithBrainly

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Schach [20]

Answer:

<h2>89,460 g</h2>

Explanation:

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<h3>89,460 g</h3>

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3 years ago
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.2 106 m/s.
Murrr4er [49]

The central force acting on the electron as it revolves in a circular orbit is 9.52 \times 10^{-8} \ N.

The given parameters;

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  • <em>radius of the circle, r = 4.63 x 10⁻¹¹ m</em>

<em />

The central force acting on the electron as it revolves in a circular orbit is calculated as follows;

F = \frac{M_e v^2}{r} \\\\

where;

M_e is mass of electron = 9.11 x 10⁻³¹ kg

F = \frac{(9.11 \times 10^{-31}) \times(2.2\times 10^6)^2 }{4.63 \times 10^{-11}} \\\\F = 9.52 \times 10^{-8} \ N

Thus, the central force acting on the electron as it revolves in a circular orbit is 9.52 \times 10^{-8} \ N.

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8 0
3 years ago
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Artyom0805 [142]

Answer:

<h2>59.5 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

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From the question we have

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We have the final answer as

<h3>59.5 N</h3>

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A  works to find magnitude. The leading negative sign gives us the positive magnitude after the correct velocity is found without it.

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