Density of a sample of solid 0001

A 15 mL sample of a solid is weighted and the mass recorded was 29 g. What is the density of the solid?

Frequency and energy of light 0001

If frequency of red light is lower than frequency of blue light, how will be their energies?

Heat transfer 0001

Is there heat between two bodies with different temperatures when they are put in contact?

Waves: relation between frequency and wavelength (3677)

An electromagnetic wave is travelling through a vacuum. If its frequency is 1 MHz, what will be its wavelength?

Sound’s tone 0001

What is the physical magnitude of sound related with tone?