If element ex has 52 protons how many electrons does it have

A constant magnetic field passes through a single rectangular loop whose dimensions are 0.41 m x 0.65 m. The magnetic field has a magnitude of 1.8 T and is inclined at an angle of 78° with respect to the normal to the plane of the loop.

Evelynn is measuring the pitch of a piano note. What unit of measurement is she most likely recording her value in?

Use the drop-down menu to complete the statement. Based on the data in the line graph, you can predict there will likely be visitors in December compared to October.

John F. Kennedy was the youngest man ever to be elected President of the United States. True False

What is the antimatter equivalent of the electron? a. neutrino b. positron c. lepton d. fermion

Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology?

A light ray travels inside a horizontal plate of glass, striking its upper surface at an angle of incidence of 50°. This ray is totally internally reflected at the glass-air boundary. A liquid is then poured on top of the glass.

A stationary object has no forces acting on it. True False

April swims 50 m north and then turns and swims 20 m back to the south. What is her velocity if it takes her 60 seconds?

What happens to the mass of an object when it is cooled?