The next ihree problems concern the following situation Two positively charged p

Question

The next ihree problems concern the following situation Two positively charged particles enter a region of uniform magnetic field B. The B field is oriented perpendicular to the page. The paths of the two charged particles are shown. L- 5. Which direction is the B field pointing? A) Up B) Down C) Right D) Into the page E) Out of the page 6. If the two particles have the same mass and charge which one has the greater velocity? A) Particle a B) Particle b C) They have the same charge 7. Let B z 4,5 T, rm,-3.0 x 10.27 kg, vb . 4 x101 m/s and qb-1.6x10-8 C. What is the length L:? A) 0.33 m B) 050 m C) 1.50 m D) 267 m E) 750 m

Explanation / Answer

here,

5)

as the charge is positive

using right hand rule

the magnetic feild is E) OUT OF THE PAGE

6)

radius of circle , r = m * v /( q * B)

for particle a ,

the velocity is less

so, the B) particle b has greater velocity

7)

the length l = 2 * r = m * v /( q * B)

l = 2 * 3 * 10^-27 * 4 * 10^7 /( 1.6 * 10^-19 * 4.5) m

l = 0.33 m

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