The correct answer is the last option. The force that moving, charged particles exert on one another is called electromagnetic force. This force involves physical interaction between two electrically charged particles. It is seen as electromagnetic fields such as electric fields, magnetic fields and light.
Answer:a star’s brightness or luminosity depends on the star’s surface temperature and size.
Explanation:
Answer:
1000 kg
Explanation:
Force = mass x acceleration, Hence, mass = Force/acceleration
mass = 4000/4 = 1000 kg
The apparent magnitude<span> (m) of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth. The brighter an object appears, the lower its magnitude value.</span>
Answer:
a) 22.471 x 10^-11 N
b) -22.471 x 10^-11 N
Explanation:
given the charge on an electron = 1.6 x 10^-19 C
nucleus contain 79 protons
hence, charge on nucleus =79 x 1.6 x 10^-19 C
distance r = 9 x 10^-9 m
a) therefore, force exerted by the gold nucleus on the electron = Kqe/r^2
= 9 x 10^9 x 79 x 1.6 x 10^-19 x 1.6 x 10^-19 / ( 9 x 10^-9 m)^2
= 22.471 x 10^-11 N
b) force exerted by the electron on the gold nucleus ; = -Force exerted by gold on electron ( From newton third law of motion)
= - 22.471 x 10^-11 N
