1. because they have the same numbers of protons and electrons.
2. by the number of its protons and neutrons
3. yes, because the isotopes of an element also have the same number of electrons.
20 kg*m/s because there is 2 kg mass and 10 m/s so you can multiply.
I may be wrong but does it mean it was revent? because i know shortly after someone dies your body becomes fully stiff so maybe it was recent and it's in the process off stiffening up
Answer:
The direction of the B-field is in the +y-direction.
Explanation:
The corresponding formula is
This means, we should use right-hand rule.
Our index finger is pointed towards +x-direction (direction of velocity),
our middle finger should point towards the direction of the B-field,
and our thumb should point towards the +z-direction (direction of the force).
Since our middle finger in this situation points towards +y-direction, the B-field should be in +y-direction.