Answer:
A. usually 3 cards a year means you have little or no credit I believe
Answer:
Length is the unit of metre
Answer:
b 2 only
Explanation:
The mass of an electron is 9.10938356 × 10⁻³¹ kilograms while the mass of a proton is 1.6726219 × 10⁻²⁷ kilograms. It can be seen that a proton is heavier than an electron.
Atoms do not always have the same number of neutrons and protons. For, example ¹³C has 6 protons and 7 neutrons.
Atoms do have most of the mass concentrated at the center called the nucleus. The nucleus has protons and neutrons. As protons have positive charge and neutrons have no charge the nucleus has a positive charge.
Answer:
The strength of magnetic field is T
Explanation:
Given:
Length of rod m
Velocity
Induced emf V
According to the faraday's law
Induced emf =
We have to find strength of the magnetic field,
T
Therefore, the strength of magnetic field is T