Answer
A. Half elementary charge
Explanation:
Answer:
Radiation is transferred through electromagnetic waves so D.
Explanation:
The electric field points in the +x direction and the particle's charge is positive, therefore the electric force points in the +x direction.
The electric force acting on the particle is:
F = Eq
F is the electric force, E is the electric field strength, and q is the charge.
Given:
E = 1290N/C
q = 6.58×10⁻⁶C
F = 1290(6.58×10⁻⁶) = 8.49×10⁻³N
The net force points in the +x direction, yet its magnitude is smaller than the magnitude of the electric force, so the magnetic force must point in the -x direction with a magnitude equal to the difference between the electric force and net force:
8.49×10⁻³ - 6.17×10⁻³
= <em>2.32×10⁻³N</em>
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The particle's velocity lies in the x-y plane and the magnetic field points in the +z direction. The velocity is perpendicular to the magnetic field, therefore the magnitude of the magnetic force can be calculated by:
F = qvB
F is the magnetic force, q is the charge, v is the velocity, and B is the magnetic field strength.
Given values:
F = 2.32×10⁻³N (solved for previously)
q = 6.58×10⁻⁶C
B = 1.27T
Plug in the values and solve for v:
2.32×10⁻³ = 6.58×10⁻⁶v(1.27)
v = 278m/s
Answer:
L = 2.61 10³ kg m² / s
Explanation:
Let's approximate the drone to a particle the angular momentum is
L = r x p
L = m r v sin θ
in this case v = 9.5 m / s the mass of the drone is m = 11 kg.
The distance can therefore be found using the Pythagorean theorem, but we can see that the relation
r_perpendicular = r sin θ
r_perpendicular = 25 m
as the flight is horizontal this height does not change
L = m v r_perpendicular
let's calculate
L = 11 9.5 25
L = 2.61 10³ kg m² / s
You can spot the correct choice just by looking at their units.
Frequency has units of "per second".
a). and b). are distances, so that can't be it.
d). is time, so that can't be it.
c). is a number per second.
If there's a correct6 answer anywhere on this list,
then it has to be c).