Why do we use oscillator? Oscillators convert direct current (DC) from a power supply to an alternating current (AC) signal. They are widely used in many electronic devices ranging from simplest clock generators to digital instruments (like calculators) and complex computers and peripherals etc. What are types of oscillator? Types of Oscillators Armstrong Oscillator. Crystal […]
Why water has high boiling point and freezing point?
Why water has high boiling point and freezing point? So despite its small molecular weight, water has an incredibly big boiling point. This is because water requires more energy to break its hydrogen bonds before it can then begin to boil. The same concept is applied to freezing point as well, as seen in the […]
How do you find the uncertainty of a de Broglie wavelength?
How do you find the uncertainty of a de Broglie wavelength? Heisenberg’s Uncertainty Principle. Equation 11.6. 4 can be derived by assuming the particle of interest is behaving as a particle, and not as a wave. Simply let Δp=mv, and Δx=h/(mv) (from De Broglie’s expression for the wavelength of a particle). What would be the […]
Do animals eat seeds?
Do animals eat seeds? A new study finds that large animals eat not only large seeds but small ones too – helping with seed dispersal. If they become extinct, this could have an impact on overall biodiversity in an ecosystem. Scientists have long thought that small animals eat small seeds and large animals eat large […]
What type of electromagnetic waves have the most energy?
What type of electromagnetic waves have the most energy? Gamma rays have the highest energies and shortest wavelengths on the electromagnetic spectrum. Which of these electromagnetic waves carries the most energy per photon? Gamma rays Which color frequency of light travels the fastest in a vacuum? red Can radio frequency harm you? RF radiation has […]
When you carry a heavy pail of water in your right arm Why do you tend to hold your left arm out horizontally away from your body?
Does material affect friction?
Does material affect friction? The frictional force does not depend on mass or surface area. All that really matters is the types of materials that are in contact. When everything is stationary, the objects feel static friction. When they are moving, kinetic friction takes over. What 2 factors do not affect friction? Friction does not […]
How many MJ are in a kWh?
Why does helium make things float?
Why does helium make things float? Helium floats because it is buoyant; its molecules are lighter than the nitrogen and oxygen molecules of our atmosphere and so they rise above it. In the car, it’s the air molecules that are actually getting pulled and pushed around by gravity as the result of the accelerating frame. […]
How can we protect Earth from solar activity?
How can we protect Earth from solar activity? Earth’s magnetosphere, the first layer of protection against solar flares, whisks away the flare’s charged particles. Due to the effects of the solar wind, the magnetosphere has a compressed, bulbous side that faces the sun, a dip near Earth’s poles and a flowing tail extending away from […]