Physics, 22.07.2019 19:00 phillipsangela014

Aproton moves at a speed of 2.0 x 10^7 m/s at right angles to a magnetic field that is directed into the page with a magnitude of 0.1t, calculate the radius of the orbit

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Answer from: mari530

The Lorentz force acting on the proton is equal to:
$F=qvB \sin \theta$
where
q is the proton charge
v is the proton speed
B is the intensity of the magnetic field
$\theta$ is the angle between the direction of v and B

since the proton travels perpendicularly to the magnetic field, in this case $\theta=90^{\circ}$ , so the Lorentz force in this case is simply
F=qvB

The magnetic force provides also the centripetal force that keeps the proton in circular motion:
$m \frac{v^2}{r}=qvB$
where
m is the proton mas
r is the radius of the orbit

If we re-arrange this equation and we use the data of the problem, we can find the radius of the orbit:
$r= \frac{mv}{qB}= \frac{(1.67 \cdot 10^{-27} kg)(2.0 \cdot 10^7 m/s)}{(1.6 \cdot 10^{-19} C)(0.1 T)} =2.09 m$

Answer from: Quest

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this

Answer from: Quest

As newton's first law states a object in motion stays in motion

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Aproton moves at a speed of 2.0 x 10^7 m/s at right angles to a magnetic field that is directed into...