basically just a white light

• The bodies Unlike charges attract one another and like charges repel one another.

It's the electric power that is lost to heat.

A mass traverlling at a given speed/velocity.

Do NOT confuse with 'Force'.

Momentum = mass X veloicty

Force = mass X acceleration.

A car , of say mass 1 tonne, ( 1000 kg) travelling at 44 netres per sec has a momentym of = 1000 kg X 44 m/s = 44000 kg m/s

The same vehicle accelerating from 0m/s ( standing start) to 44 m/s in 10 sec has a force of

F = 1000 kg( 44 - 0 ) m/s / 10 s

F = 1000 kg * 4.4 m/s^2

F = 4400 kg m/s^2

Note the different in the time(s) units.

You walking have kinetic energy

A car/train/ship/aeroplane moving has kinetic energy

A rocket going into space has kinetic energy.

The Earth orbiting around the Sun has kinetic energy.

Any object that is moving has kinetic energy.

K.E. = 0.5 massvelocity^2

or

KE = = 0.5 m v^2

YES!!!

It is a clean source of electrical energy. It is produced by the action of falling water.

However, in some cases a large dam may have to be constructed, and this is environmentally damaging.

However, there is also tidal energy, produced by the action of sea water ebbing and flowing of the tides.

NO!!!

Acceleration is the change in velocity over a give time.

A = ( u - v) / t

e.g.

A cae standing start to 30 mph. in say 10 secs.

First we need to change the units of time and distance .

30 mph = 44 m/s

u = final velocity of 44 m/s

v = initial velocity of 0 m/s ( standing start)

t = 10 secs.

Substitute

a = ( 44 m/s - 0 m/s_ / 10s

a = 44m/r /10s

a = 4.4 m/s^2

Bear in mind gravitational acceleration on Earth is ~ 10m/s^2

The CGS (Centimeter-Gram-Second) system of units includes a set of units for measuring physical quantities. In the context of stress, the CGS system uses the dyne as the unit of force, the square centimeter (cm²) as the unit of area, and the dyne per square centimeter (dyn/cm²) as the unit of stress. Stress in the CGS system is often referred to as "dyne/cm²" or "barye."

Here are the key terms and their explanations in the context of the CGS system of stress:

Force (Dyne): The dyne is the unit of force in the CGS system. One dyne is defined as the force required to accelerate a one-gram mass by one centimeter per second squared. Mathematically, 1 dyne = 1 g·cm/s².

Area (Square Centimeter - cm²): The square centimeter is the unit of area in the CGS system. It represents the area of a square with sides of one centimeter. It is equivalent to

1

cm

2

=

0.0001

m

2

1cm

2

=0.0001m

2

in the SI (International System of Units) system.

Stress (Dyne per Square Centimeter - dyn/cm² or Barye): Stress in the CGS system is measured in dyn/cm², and it is also referred to as the barye. It represents the force applied per unit area. Mathematically, stress (σ) is calculated using the formula:

�

=

�

�

σ=

A

F

​

where

�

σ is the stress in dyn/cm²,

�

F is the force in dyn, and

�

A is the area in cm².

In summary, the CGS system of stress uses the dyne as the unit of force, the square centimeter as the unit of area, and expresses stress in dyn/cm² or barye. However, it's worth noting that the CGS system has largely been supplanted by the SI system in many scientific and engineering applications, where the Newton (N) is the standard unit of force and the Pascal (Pa) is the standard unit of stress.

In a tube, the light will bounce off on a 45 degree mirror twice until it will reach your sight.

wave period -- apex

Ball stranglers are a slang term for men’s white brief underwear. Since white briefs are viewed by many people today as an uncool and outdated type of underwear, many different derogatory slang terms have been coined over the years to refer to them. The most common of these is the term “tighty whities.” “Ball stranglers” is a less commonly used derogatory term for men’s briefs, referring to the fact that briefs are designed to fit tightly around a guy’s crotch which restrains his genitals (or “balls”) and doesn’t allow them to move around. Therefore, the guy’s “balls” are “strangled” by the tight fitting briefs. Other slang terms for men’s briefs include “nut huggers” and “apple catchers.”

heat energy is transferred from warmer objects to cooler objects (2024)

SENDONG MOVES AROUND NORTHWES

The word 'halogen# vp,es Latin and means 'Salt maker'

'Halo' ; Salt , and 'gen' ; maker or GENerator.

The elements are

Fluorine, Chlorine, Bromine, Iodine, Astatine and Tennessine.

The last two elements are not fully characterised.

Remember Newton's Second Law of Universal Dynamics.

Put into algebraic form it is

F = ma

To answer your question

a = F/m

Acceleration is equal to force(F) divided by mass(m) of the object being pushed/[pulled.

The exact number of people who go scuba diving globally can be challenging to determine precisely due to various factors, including the lack of a centralized worldwide database for recreational scuba diving statistics. Additionally, the popularity of scuba diving varies by region, and participation rates can change over time.

As of my last knowledge update in January 2022, millions of people around the world participate in scuba diving as a recreational activity. Popular scuba diving destinations, such as tropical coastal areas, attract a significant number of divers. The Professional Association of Diving Instructors (PADI), one of the largest scuba diving training organizations globally, has certified millions of divers since its inception.

To obtain the most current and accurate information on the number of people participating in scuba diving, you may want to check with reputable scuba diving organizations, industry reports, or relevant government agencies that track recreational activities. Keep in mind that participation numbers can fluctuate, and the data may have changed since my last update.

Highly reflective surfaces like mirrors, or white objects. Albedo refers to how much light an object reflects, having a high albedo means the object is more reflective. In the context of astronomy, the body with the highest albedo in our solar system is Saturn's moon Enceladus which reflects about 90 percent of incident light.

Astronauts are lighter on the Moon because there is less gravity exerted on them because the mass of the Moon is smaller. Astronauts experience about one sixth the accelerating force of gravity on the lunar surface compared to Earth.

When two plane mirrors are inclined at an angle of 90 degrees to each other, the number of images formed is infinite.

Each mirror will produce its own set of multiple images due to the reflections occurring between them. As the mirrors are perpendicular (at a 90-degree angle), the reflections bounce back and forth indefinitely between the two mirrors, leading to an infinite number of images.

[object Object]

As expressed, three.

The relationship between pressure and temperature depends on the conditions and the substance involved. In general, for ideal gases, pressure and temperature are related by the ideal gas law, which is given by the equation:

�

�

=

�

�

�

,

PV=nRT,

where:

�

P is the pressure,

�

V is the volume,

�

n is the number of moles of gas,

�

R is the ideal gas constant, and

�

T is the temperature in kelvin.

According to the ideal gas law, pressure is directly proportional to temperature when other parameters are held constant. This means that, for an ideal gas, if the temperature increases while other factors remain constant, the pressure will also increase, and vice versa.

However, for real gases and under certain conditions, the relationship between pressure and temperature can be more complex, and deviations from ideal behavior may occur. In some cases, other factors such as intermolecular forces and the nature of the substance can affect the relationship between pressure and temperature. Therefore, it's important to consider the specific conditions and properties of the substance in question.

The Moon spins on its axis, and also orbits the Earth. Because of tidal locking its orbital and rotational period are about the same, hence the same part always faces the Earth. Since it has an elliptical and not perfectly circular orbital path, our perception of it from Earth shows a slight wobble throughout the month (libration).

Momentum = speed multiplied to mass.

M'm = 5 ms^-1 X 20 kg .

M'm = 100 kg m s^-1

Understanding the intricacies of how electric current works in solar panels involves delving into the fascinating process of converting sunlight into usable electrical energy. At the heart of this transformation is the photovoltaic effect, a phenomenon inherent to the solar cells comprising solar panels.

The solar panels predominantly consist of semiconductor materials, typically silicon-based, that exhibit the photovoltaic effect. When sunlight strikes these materials, photons, the particles of light, transfer their energy to electrons within the semiconductor. This energy excites the electrons, enabling them to break free from their atomic orbits.

This liberation of electrons results in the creation of electron-hole pairs within the semiconductor. An electron-hole pair comprises a free electron and the positively charged "hole" left behind when an electron is excited. These electron-hole pairs are pivotal for the generation of electric current.

Due to the presence of an electric field within the solar cell, the liberated electrons are compelled to move in a specific direction, establishing an electric current. This movement of electrons constitutes direct current (DC). The electric field is established during the manufacturing process through the introduction of specific doping materials.

Conductive metal contacts on the top and bottom surfaces of the solar cell facilitate the collection of the generated electric current. The electrons flow through an external circuit, creating an electric current that can be harnessed for various applications.

While solar panels produce DC, most household appliances and the electrical grid operate on alternating current (AC). Therefore, an inverter is typically employed to convert the DC generated by the solar panels into AC, making it compatible with standard electrical systems.

In conclusion, the generation of electric current in solar panels relies on the photovoltaic effect, where sunlight triggers the liberation of electrons, setting in motion a series of processes that culminate in the production of clean and renewable energy.