Answer:
First, let's define the coordinate axes: positive x direction is to the right, positive y direction is to upwards, and z direction is out-of-the plane (towards you).
If the particle is moving with velocity in the presence of an external E-field, than according to the below formula E-field pushes the positive charge in the direction of the field, which is upward.
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If the velocity of the particle is unchanged, this means that the particle does not have an acceleration, so net force applied to the particle is zero.
We know that the force caused by the E-field is upwards, so an equal amount of another force is directed downwards. This second force is caused by magnetic field.
This is the magnitude of the magnetic field.
For the direction of the magnetic field we can use right-hand rule with the following equation:
Here, is in the x-direction. is in the (-y)-direction.
According to the right-hand rule, B-field should be in the z-direction (out-of-the plane, towards you.)
Explanation:
According to Joule's Law, we have the relationship between charge, voltage, and current:
W = Vq
where q is the charge
V is the voltage or the potential difference
W is the work done
From the given values and rearranging the equation:
V = 10J / 4.0x10^-2
V = 250 V
The voltage difference is 250 V
Answer:
8 electrons
Explanation:
Now you can figure out how many electrons, protons and neutrons Oxygen has: Atomic number (which is always the smaller of the two numbers) is 8. Hence 8 protons. Because the atom is neutral, there are also 8 electrons.
Complete Question
Planet D has a semi-major axis = 60 AU and an orbital period of 18.164 days. A piece of rocky debris in space has a semi major axis of 45.0 AU. What is its orbital period?
Answer:
The value is
Explanation:
From the question we are told that
The semi - major axis of the rocky debris
The semi - major axis of Planet D is
The orbital period of planet D is
Generally from Kepler third law
Here T is the orbital period while a is the semi major axis
So
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