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If an electron and a proton both have the same velocity, how do their wavelengths comapre? Please express your answer numerically as a ratio.

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SadhaLv10
13 May 2021
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

In a proton accelerator a moving proton hits a solid target and stops. As a result an electron-positron pair is created at rest. The proton mass is 1.76E-27kg and the electron and positron have the same masses of 9.1E-31kg. What is the initial velocity of the proton?

Background:
The figure is an energy-level diagram for a quantum system.

See image:
http://session.masteringphysics.com/problemAsset/1021627/9/jfk.Figure.28.P38.jpg

Question:

What wavelengths appear in the system's emission spectrum?Express your answer using two significant figures in nanometers.Enter your answers numerically separated by commas.
I'm not quite sure how to get this one. I think I useE=hv=hc/l as an equation, but I'm not sure what to plug in, if thatis even the correct formula. Can anyone help??

Clear the Runway

To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required for the takeoff, the takeoff velocity, depends on several factors, including the weight of the aircraft and the wind velocity.

(a) A plane accelerates from rest at a constant rate of 5.00 m/s2 along a runway that is 1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the time t needed to take off?

Express your answer in seconds using three significant figures.

(b) What is the speed vTO of the plane as it takes off?

Express your answer numerically in meters per second using three significant figures.

(c) What is the distance dfirst traveled by plane in the first second of its run?

Express your answer numerically in meters using three significant figures.

(d) What is the distance dlast traveled by plane in the last second before taking off?

Express your answer numerically in meters using three significant figures.

(e) What percentage of the takeoff velocity did the plane gain when it reached the midpoint of the runway?

Express your answer numerically to the nearest percent.

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