What information about an astronomical object can be determined by observing its spectrum?

In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 3.40 mm. what is the difference between these wavelengths?

Calculate the potential energy of a 6kg bowling ball suspended 3m above the surface of the earth

5. True or False: Velocity is the magnitude of speed

A flying bird action and reaction force

A monochromatic light passes through a narrow slit and forms a diffraction pattern on a screen behind the slit. As the wavelength of the light decreases,

Water is a compound. O A. True B. False

How do air quality scientists ensure the air is cleaned? What steps do they take?

Is a mirrors surface opaque or transparent or translucent?

Sound waves can combine to become bigger or smaller true or false

Archimedes supposedly was asked to determine whether a crown made for the king consisted of pure gold (density of gold is 19.3 * 103 kg/m3). According to legend, he solved this problem by weighing the crown first in air and then in water.