1. Imagine a proton approaching Earth from space in Earth\'s equatorial plane. T
ID: 1584071 • Letter: 1
Question
1. Imagine a proton approaching Earth from space in Earth's equatorial plane. The magnetic force on that proton as it enters the Earth's magnetic field will tend to move it a) Eastward b) Westward c) Northward d) Southward e) Trick Question: It will have no effect on the proton's motion. 2. Problem A proton moves at 8.00 >10° m/s along the waxis. It enters a region in which there is a magnetic field of magnitude 2.50T, directed at an angle of 60.0° with the raxis and lying in the sy-plane (Fig. 19.8), (a) Find the initial magnitude and direction of the magnetic force on the pro- ton. (b) Caleulate the proton's initial acceleration 60° Strategy Finding the magnitude and direction of the magnetic force requires substituting val- ues into the equation for magnetic force, Equa- tion 19.1, and using the right-hand rule. Applying Newton's second law solves part (b). Magnitude of Magnetic Force = ; Its Direction is Acceleration =Explanation / Answer
1)
F=q*(VxB)
==>
direction of B is --> south to north
dierction of v is --> approaching at euatorial line,
the direction of force becomes---> east ward
correct option is (a)
2)
v=8*10^6 m/sec
B=2.5 T
theta=60 degrees,
a)
F=q*V*B*sin(theta)
F=1.6*10^-19*8*10^6*2.5*sin(60)
F=2.77*10^-12 N
directionn of F is along +z axis
b)
F=m*a
2.77*10^-12 =1.67*10^-27*a
===> acceleration, a=1.66*10^15 m/sec^2
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