You've built quite a convoluted question there, Thelo.
If you wrote what you mean and I read it correctly, then the phrase
in the blank is "... the loss of energy to friction in the machine ...".
Answer:
north
Explanation:
When a charged particle moves in a magnetic field, the particle experiences a force given by the formula:
where
q is the magnitude of the charge
v is its velocity
B is the magnetic field
is the angle between the directions of v and B
In this problem,
(charge of the electron)
(strength of magnetic field)
(force)
Therefore, the velocity is
The direction of the force is perpendicular to both the direction of the velocity and the magnetic field, and it can be found using the right-hand rule:
. Thumb: direction of the force (downward) --> however the charge is negative, so this direction must be reversed: upward
- Middle finger: direction of the field (west)
- Index finger: direction of velocity --> north
So, the electron is travelling north.
The answer is ”D”, “a higher frequency and a shorter wavelength.
Answer:
The only work done is when the person lifts the sack over a distance, W = 78.48 [N]
Explanation:
We have to remember the definition of work, which tells us that work is the result of a force by a distance, we must apply this concept in each of the movements of the person in the problem described.
W = F * d
where:
F = force [N]
d = distance [m]
The force is given by the producto of the mass by the gravity.
F = 5 * 9.81 = 49.05 [N]
W = 49.05 * 1.6 = 78.48 [N]
<span>C. The net force is perpendicular to the motion.
When you swing a yo-yo in a circle around your head, the net force
is the tension in the string, pointing toward the center of the circle.
There's nothing there that provides any force parallel or opposite to
the motion.
When the Earth revolves around the Sun in a circular orbit, the net force
is the gravitational force between the Sun and the Earth. There's nothing
</span>there that provides any force parallel or opposite to the motion.