An atom with z = 26 and a = 58 contains ________ protons and ________ neutrons.

As __________________ decreases, then light energy increases.

_____ is the property of increasing pitch that accompanies increases in the tones frequency.

A compass in a magnetic field will line up __________.

Stern observed all of the following results except _______ in his experiment.

Restless tectonic plates move (shift) between one and fifteen centimeters per __________.

In relation to spectral series, which of the following options correctly states the Brackett series? (Consider that A is the wavelength, R is Rydberg constant, and n may have integral values.)

Calculate the mass defect of Oxygen (atomic mass = 16, atomic number = 8) in MeV/cz.

The radius of the nucleus is smaller than the radius of an atom by which of the following factors?

In a Young's experiment, 3 mm is the width of the fringes obtained with light having a wavelength of 9000 A. If the entire apparatus is immersed in a liquid of refractive index 1.33, then what is the fringe width?

If 0.8m is the distance between the two insulated charged spheres of charges 8.5 x10‘7 C each, then what is the force when the charges are doubled and the distance of separation among them is halved?