Is there a relationship between speed and acceleration? Speed is the distance covered in a unit of time while acceleration is the rate of change of speed. The unit of speed in the metric system is meters per second (m/s) while that of acceleration is meters per second squared (m/s2). Speed is a scalar quantity […]
Which country has no volcanoes?
Which country has no volcanoes? Even though Australia is home to nearly 150 volcanoes, none of them has erupted for about 4,000 to 5,000 years! The lack of volcanic activity is due to the island’s location in relation to a tectonic plate, the two layers of the Earth’s crust (or lithosphere). In which country volcano […]
What is the minimum energy of harmonic oscillator?
What is the minimum energy of harmonic oscillator? Classically, the lowest energy available to an oscillator is zero, which means the momentum also is zero, and the oscillator is not moving. Compare the quantum mechanical harmonic oscillator to the classical harmonic oscillator at v=1 and v=50. On what factor does the angular frequency of simple […]
Is work done when you lift an object?
What sound intensity is defined as the level of pain?
Is loudness related to frequency?
Is loudness related to frequency? Now when talking about sound waves the sound level of a noise (loudness), it is proportional to the intensity of the source. The loudness of a sound does not seem to depend on frequency. But according to the equation above, intensity DOES depend on frequency. How loud is 1000hz? Using […]
Which are characteristics of a ray when it hits a boundary and refracts but not?
Which are characteristics of a ray when it hits a boundary and refracts but not? F. Only these two options are characteristics of a ray when it is refracted, but not when it is reflected. In fact: Reflection occurs when a ray hits the interface between two mediums and bounces off back. When it is […]
What is the point of neutrons?
What is the point of neutrons? Neutrons bind with protons and one another in the nucleus via the nuclear force, effectively moderating the repulsive forces between the protons and stabilizing the nucleus. How quickly does a neutron bomb kill? two days Is there a doomsday bomb? In a 2-part episode of the TV show The […]
How expensive is a Slinky?
How expensive is a Slinky? Slinky was introduced, the $10. price for three is not out-of-line. Who invented Slinky? Richard T. James What slinky means? 1 : characterized by slinking : stealthily quiet slinky movements. 2 : sleek and sinuous in movement or outline especially : following the lines of the figure in a gracefully […]
Do construction workers eat on beams?
Do construction workers eat on beams? The sight of 11 Rockefeller Center construction workers casually eating lunch across a beam hanging 850 feet in the air was a hopeful look at life in the ’30s. It showed the world that New York City—and America as a whole—was still building, still progressing, and, most importantly, still […]