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rosijanka [135]
3 years ago
10

What factors determine whether and how a populations size changes

Physics
1 answer:
Zigmanuir [339]3 years ago
6 0

Answer:

The two factors that increase the size of a population are natality, which is the number of individuals that are added to the population over a period of time due to reproduction, and immigration, which is the migration of an individual into a place.

Explanation:

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Explain how electricity is transmitted from the main source in relation to step up and step down transformers
puteri [66]

Answer:

The electricity produced from the main source which is an electrical generator which is usually close a remote abundant source of natural energy or at a distant location away from the residential areas where the electricity is used

The step up transformer is  the device used to raise the voltage and therefore lower the current of the of incoming generated electricity before it is transmitted through high tension cables so that the energy loss from source to destination is reduced and the electricity generated can applied where needed

However, the high voltage transmitted along power lines to reduce energy loss cannot be used as it is by the consumer, partly because it is very harmful in the event of an electric shock and can easily damage household electrical devices, therefore, the high voltage in the power lines is reversed back or lowered into voltages which can be used to power electrical devices in buildings with the use of a step-down transformer

Explanation:

7 0
3 years ago
Estimates show that the total energy output of the sun is 5 × 1026 j/s. what is the corresponding loss in kg/s of the sun?
Anika [276]

Estimated total energy output IN ONE SECOND = 5 x 10²⁶ Joules .

Energy = mass · c²  ( Albrecht Einshtein)

c = 3 x 10⁸ m/s

c² = 9 x 10¹⁶ m²/s²

5 x 10²⁶ Joules = mass · (9 x 10¹⁶ m²/s²)

mass = (5 x 10²⁶ Joules) / (9 x 10¹⁶ m²/s²)

mass =  (5 x 10²⁶) / (9 x 10¹⁶)   kg

mass =  (0.55... x 10¹⁰) kg

<em>mass = 5.55... x 10⁹ kilograms</em>

Look at that for a second.  Then think about it for another second.

It's telling us that at its present rate of energy output, the sun is losing more than 5 and a half Billion kilograms of mass every second.  And when we read other things about the sun, they say that the sun is expected to continue doing what it's doing for another 4 or 5 Billion years !

Gives ya some idea of the size and mass of the Sun, doesn't it !

4 0
3 years ago
How does the standard cell potential tell you about whether 1) a species is oxidizing or reducing? 2) how strong of an oxidizing
KATRIN_1 [288]

The standard cell potential helps to determine the oxidative and reductive strength of species. All the species that lie below the Standard Hydrogen Electrode in the standard cell potential table are stong oxidizing agents and are highly electronegative while those that are above the Standard Hydrogen Electrode are either weak oxidants or reducing agents

7 0
3 years ago
A sound wave has a speed of 343 m/s in air. What is the wavelength of a sound wave with a frequency of 686 Hz
Svetradugi [14.3K]

Wavelength is the distance between 2 adjacent points in a wave

we can use the following equation to find the wavelength of a sound wave

wavelength = speed / frequency

frequency is the number of waves passing a point in 1 second

substituting the values in the equation

wavelength = 343 m/s / 686 Hz

wavelength = 0.5 m

wavelength of the wave is 0.5 m

6 0
3 years ago
A cylindrical insulated wire of diameter 5.0 mm is tightly wound 200 times around a cylindrical core to form a solenoid with adj
laiz [17]

Answer:

0.0016 T

Explanation:

Parameters given:

Diameter of wire = 5 mm = 0.005 m

Radius of wire, R = 0.0025 m

Number of turns, N = 200

Current through the wire, I = 0.10A

The magnitude of the magnetic field is given as:

B = (u₀NI) / (2πR)

Where u = magnetic permeability of free space.

B = (1.257 * 10⁻⁶ * 200 * 0.1) / (2 * π * 0.0025)

B = 0.0016 T

The magnitude of the Magnetic field is 0.0016 T.

3 0
4 years ago
Read 2 more answers
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