Answer: You could figure out the velocity using the acceleration and time.
Answer:
B. 312.5 J
Explanation:
Work = change in energy
W = ½ mv₂² − ½ mv₁²
W = ½ m (v₂² − v₁²)
W = ½ (5 kg) ((15 m/s)² − (10 m/s)²)
W = 312.5 J
The Lorentz force exerted on the particle due to the magnetic field provides the centripetal force that keeps the particle in circular motion:
where
m is the particle mass
v is its velocity
r its orbital radius
q its charge
B the magnetic field intensity
and where we neglected the factor
in the Lorentz force formula because the particle is traveling perpendicular to the magnetic field, so
.
Re-arranging the formula, we get
(1)
The problem gives us all the data about the particle and the magnetic field:
(we are only interested in the magnitude of the charge)
And by plugging these numbers into eq.(1), we find the radius of the orbit
Hello there,
After a natural disaster such as a hurricane or tornado, what will happen in the damaged ecosystem?
Answer: C) An ecosystem like the previous one will be re-established.