If element x has 28'protons how many electirons does it have

What are two reasons why the terrestrial planets formed closer to the Sun after the supernova event that initiated the formation of the solar system?

In the box provided explain why living organisms contain more hydrogen atoms than any other atoms

Is kirchoff's law applicable for ac circuits?

The proton from the decay of the neutron is moving at 0.75 c. An observer on the proton measures the radius of the electron as 10 fermi. A Fermi is 10-15 m. What is the radius of the electron measured by someone on the electron?

Write the product: 1. 43.43.43.43 2. x. x. x 3. 100.100.100 4. p. p. p. p. p

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.