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.

Explanation

• When light enters from a vacuum into glass, its velocity decreases.
• This is because light travels at a speed of approximately 299,792,458 meters per second (m/s) in a vacuum, but it travels at a slower speed in a medium with a higher refractive index, such as glass.

Explanation

To find the tension in the wire, we can use the formula:

T = μv^2

where T is the tension, μ is the linear density, and v is the wave speed.

First, we need to find the wave speed. We can do this by analyzing the wave equation:

Y = 0.021 sin (x + 30t)

The wave speed is given by the coefficient of t, which is 30 m/s.

Now we can plug in the values:

T = μv^2

= (1.3 x 10^-4 kg/m) x (30 m/s)^2

= 0.12 N

So the tension in the wire is 0.12 N.

Explanation

Difference between AC generator and DC generator: AC generator produces alternating current, while DC generator produces direct current.

Explanation

 The direction of energy flow in an ecosystem is unidirectional, moving through various trophic levels successively.

It begins with the input of solar energy, which is captured by primary producers, such as plants, through photosynthesis.

Explanation

 When a rigid body rotates around a fixed axis, all points on the body have the same angular speed, but not the same linear speed.

The linear speed of a point is directly proportional to its distance from the axis of rotation; points farther from the axis move faster