Explanation

Explanation

The acceleration of a particle moving in a uniform circular motion is directed towards the center of the circle and is given by:

a = v^2 / r

This is known as centripetal acceleration.

Explanation

A thermometer is used to measure temperature in Celsius or Fahrenheit.

Celsius to Fahrenheit: Use the formula F=(Cx9/5)+32

Fahrenheit to Celsius: Use the formula C=(F-32)x (5/9)

Explanation

• Venera-9 was the first spacecraft to land on the surface of Venus.
• Launched by the Soviet Union in 1975.
• It was designed to study the Venusian atmosphere and surface.
• It successfully transmitted data from the planet's surface for 53 minutes before its batteries failed.

Explanation

• The optical centre is the point within a lens where a ray of light passes through without changing its direction or path.
• This point is located at the centre of the lens, on the optical axis.

Explanation

• The pressure exerted by a liquid at a given point increases with the depth of the liquid, as the weight of the liquid above increases.
• This is described by Pascal's Law, which states that the pressure at a point in a fluid is proportional to the depth of the fluid.

Explanation

• The batteries in the toy car store chemical energy.
• It is converted into electrical energy when the batteries are connected to the toy car's motor.

Explanation

• Uranus is an extremely cold planet and it's called Ice Giant.
• It's identical to the planet Neptune.
• It has 27 moons.
• It's largest moon; Titania.

Explanation

• In atomic physics, the energy of an electron in an atom is quantized, meaning it can only take on specific discrete values.
• This is a fundamental principle of quantum mechanics, which states that energy is not continuous, but rather comes in small, discrete packets (quanta).
• The energy levels of electrons in an atom are determined by the solutions to the Schrödinger equation, and they are characterized by specific energy values, known as energy eigenvalues.
• These energy levels are quantized, meaning they can only take on specific values, and not any arbitrary value.

Explanation

• A microphone converts sound waves into electrical signals, which are analogue in nature.
• The voltage signal generated by a microphone is a continuous signal that varies in amplitude and frequency in response to the sound waves.
• This signal is an analogue representation of the sound wave, and it is not digital.