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An electron starting from rest accelerates through a potential difference of 388 V What is the final de Broglie wavelength of the electron assuming that its final speed is much less than the spee?
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∙ 10y ago
An electron, starting from rest, accelerates through a potential difference of 417 V.
Wiki User
∙ 10y ago
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What restricts the flow of energy?
You can change current by altering potential difference or resistance... But assuming the voltage is constant, the resistance of the circuit restricts the flow of electrical current.
The lower the frequency of a sound wave the?
For electromagnetic waves:Speed(v)=frequency(f)*wavelength(lambda)ORwavelength(lambda)=speed(v)/frequency(f)Therefore, wavelength and frequency have an Inverse relationship this means that assuming speed remains constant if the wavelength increases (gets longer) the frequency will decrease.
What does it mean if one found negative absorption in uv-vis absorption graph?
That means your blank has a higher absorption at that particular wavelength than the sample. This really shouldn't happen assuming your blank is water.
Determine the energy and wavelength of a wave with a frequency of 3.6X 1016 hertz Would this be a wave of interest to nuclear medicine?
assuming the wave is electromagnetic... the energy of a single photon of that frequency is given by the formula E=hf where E= energy of the photon h=the Planck constant f= the frequency of the photon From this the energy of the photon is the Planck constant (6.63 x10-34) multiplied by the frequency 3.6x1016 Hz. E= 23.9x10-18 Joules. The wavelength of any wave is determined by the equation wave speed = frequency x wavelength. thus, the wavelength is the wave speed divided by the frequency. since all electromagnetic waves travel at the speed of light then... wavelength = 3x108 / 3.6x1016 wavelength = 0.83x10-8 = 8.3x10-9 metres. The electromagnetic radiation corresponding to this energy and wavelength is ultraviolet radiation and may be of interest to nuclear medicine.
What is the difference between over the counter potassium and prescription potassium?
the other ingredients in the supplement may vary. assuming the dose is the same.
If the force from the engine is bigger than the force of the air resistance?
The vehicle accelerates, assuming the engine is in a vehicle.
How is potential energy converted to electrical energy?
Assuming that you are referring to electrical energy produced by power plants,where the source is water, the difference of potential represented by the difference of level, which falls down from the dam, a huge amount of water force the rotation of big turbines that generates alternating current.
Describe how the frequency of a wave changes as the wavelength changes?
it is directly proportional to frequency so if frequency increases wavelength also increases
How does the potential energy of an object change if its mass is increased three times?
Assuming nothing else changes, then it's potential energy increases 3 fold (also assuming we're talking about gravitational potential energy and not electric potential energy).
What is the wavelength of a wave that has a velocity of 0.4 and a frequency of 0.2 Hz?
you need to specify the units for velocity. assuming that the velocity is in metres per second, the wavelength is 2 metres
Which wavelength of light has the lowest frequency?
Assuming you mean visible light, that would be red light.
How does resistance after current?
Assuming you are asking "How does resistance altercurrent?", then the answer is that, for a given value of potential difference, the current is inversely-proportional to the resistance. E.g. doubling the resistance will reduce the current by half.
How much energy does a wavelength have if it has a wave of 3.01x10-9m?
A wavelength doesn't have energy. The wave does. The details depend on the type of wave. Assuming an electromagnetic wave, you have to multiply the frequency by Plank's constant. To find the frequency, divide the speed of the wave by the wavelength.
What happens to the frequency of a wave when the wavelength goes up?
Frequency drops, assuming the velocity stays the same.
Frequency of 106.5 MHz. what wavelength would it have?
Assuming a propogation speed of 3x108 m/s (approximate speed of light), a frequency of 106.5 MHz would have a wavelength of about 2.8 m.
What is the frequency of light with a wavelength of 6.14x10-7?
Frequency=velocity of light/wavelength We know that the velocity of light is 3x10^8m/s From your wavelength, I am assuming that the number is in meters Thus the frequency =(3x10^8)/(6.14x10^-7) frequency = 4.8859x10^14 Hz
How does increasing the wave speed affect the frequency?
Assuming a constant wavelength, then increasing the wave speed will increase the frequency.
