The density of a wooden block that has a volume of 5 cm3 & a mass of 30.5 g Formula:
Mass =
Volume =
Density =

Explanation:

The density of a substance can be found by using the formula

From the question

mass = 30.5 g

volume = 5 cm³

We have

We have the final answer as

Hope this helps you

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.