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xz_007 [3.2K]
3 years ago
13

A student look at ocean waves coming into the beach. An oceanwavd with more energy will

Physics
2 answers:
nlexa [21]3 years ago
8 0
It is A, they will have a greater height. I just had this question so it's right. 
pshichka [43]3 years ago
5 0
<span>C. Travel toward the beach faster</span>
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An electron is accelerated through a potential difference of 3.1 kV and directed into a region between two parallel plates separ
Lapatulllka [165]

Answer: 178.25*10^-6 T

Explanation: In order to solve this problem we have to take into account the equilibrium between the electric and magnetic forces in the electron, so it is given by:

Fm=evB

Fe=eE so

evB=eE the we have

v=E/B

Firsly we calculate the velocity of the electron before to get the parallel plates at 100V

eΔV=1/2*m*v^2 then

v=(2*eΔV/m)^1/2

v=(2*1.6*10^-19*3.1*10^3/9.1*10^-31)^1/2=33 *10^6 m/s

Then we can calculate B

B=E/v   E.d=V  where d is the separation between the plates and V is equal a 100V

B=V/(d*v)=100/(17*10^-3*33 *10^6)=178.25*10^-6 T

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Friction is the correct answer.
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Power is the rate work is usually done in.
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A wave on a string is described by Y(x, t) : 15.0 sin( nclS - 4rrt),, where x and y are in centimeters and / is in seconds. (a)
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