When the two waves of the same frequency, speed and amplitude traveling in opposite directions are superimposed,

Cohesion is the attraction between like

A mass of 8 kg is above a given datum, where local g is 9.70 m/s^2. Calculate the gravitational force with respect to the datum?

On decreasing the pressure, the boiling point of water will

A wave in which the particles of the material move up and down as the waves goes from left is called a

Normal range of the frequency of sound, which the human beings can hear, is

A Decibel is a

In electromagnetics and wave theory, what refers to waves, commonly generated by electronic devices, whose wavelengths ranges from approximately 0.3m to 10-4 m. Due to their short wavelengths these are often used in radar systems and for studying the atomic and molecular properties of matter

In fluid mechanics, this shows that the pressure of a fluid decreases as the speed of the fluid increases. In addition, the pressure of a fluid decreases as the elevation increases

According to this law, “The force between two charges varies directly as the magnitude of each charge and inversely as the square of the distance between them

Which of the following is true? The density of water

At the boiling point of liquid, the vapor pressure

A 3.5 lb weight hangs at the end of a spring with k = 20 lb/ft. The weight is pulled slightly and released. Calculate at what frequency it will vibrate?

Which one of the following propagates with the same speed as speed of light?

Heat will flow from one body to another in thermal contact with it, when they differ in

It describes the luminous flux incidence per unit area and is expressed in lumens per square meter.

When the pitch of a note is raised then, its

When the temperature of an ideal gas is increased at constant pressure,

What is the kinetic energy of a 1-pound weight that has fallen 16 feet?

Suppose that energy Q is required to accelerate a car from rest to v, neglecting friction. How much added energy would be required to increase the speed from v to 2v?