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A steady beam of alpha particles (q = + 2e) traveling with constant kinetic energy 18 MeV carries a current of 0.30 µA.
(a) If the beam is directed perpendicular to a plane surface, compute how many alpha particles strike the surface in 3.0 second?
(b) At any instant, how many alpha particles are there in a given 20 centimeter length of the beam?
(c) Find through what potential difference was it necessary to accelerate each alpha particle from rest to bring it to an energy of 18 MeV?
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 2.00 mT. The angular momentum of the electron about center of the circle is 5.50 multiplied by 10-25 J·s.
A uniform electric field of magnitude 405 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm. What is the work done by the field on the electron?
In the bohr model of the hydrogen atom an electron (mass 9.1*10^-31kg) orbits a proton at a distance of 5.3*10^-11 m. The protonpulls on the electron with an electrical force of 8.2*10^-8 N. How many revolutions per second does the electron make?
An artificial satellite is moving in a circular orbit with a speed of 6.3 km/s and a period of 84.0 min. What is the acute angle between the radius vector and the total acceleration of the satellite
q1. a space traveller whose mass is 104kg leaves earth. what are his weight and masson earth and in interplanetary
A certain elevator cab has a total run of 201 m and a maximum speed is 315 m/min, How far does the cab move while accelerating to full speed from rest
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Your university radio station has a 5.3 kW radio transmitter that broadcasts uniformly in all directions; listeners within 15 kw have reliable reception. What should be the new power
A diffraction grating with groove spacing of 2 microns is used to observe the balmer series in hydrogen, At what angle will the first order cyan line appear
air at 300 k and 100 kpa flows into a hair drier having electrical work input heating coil and fan motor of 1500 w.
Explain the valve minor loss coefficient and how you would go about determining K.
If a 500.0g cart had its velocity change from 1.65 m/s to 1.23 m/s over a period of 2.50 seconds. Calculate and record the force acting
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