<span>The answer is A. This is because sunlight is composed of various wavelengths in the
electromagnetic spectrum. In the visible
light spectrum, red light has a higher frequency
(lower wavelength) than blue light that has a lower frequency (higher wavelength).
Therefore red light has higher energy than blue light hence able to penetrate
more into the atmosphere before scattering, compared to blue light. At sunrise
and sunset, due to the relative angle of
the sun to the observer, the sun rays
have to penetrate a thicker layer to the atmosphere
before reaching the observer</span>
Answer:
![\boxed{\sf Density = 3.12 \ kg/L}](https://tex.z-dn.net/?f=%20%5Cboxed%7B%5Csf%20Density%20%3D%203.12%20%5C%20kg%2FL%7D%20)
Given:
Mass = 2.56 kg
Volume = 0.820 L
To Find:
Density
Explanation:
Formula:
![\boxed{ \bold{Density = \frac{Mass}{Volume}}}](https://tex.z-dn.net/?f=%20%5Cboxed%7B%20%5Cbold%7BDensity%20%3D%20%5Cfrac%7BMass%7D%7BVolume%7D%7D%7D)
Substituting value of mass & volume in the formula:
![\sf \implies Density = \frac{2.56}{0.820} \\ \\ \sf \implies Density = 3.12 \: kg/L](https://tex.z-dn.net/?f=%20%5Csf%20%5Cimplies%20Density%20%3D%20%20%5Cfrac%7B2.56%7D%7B0.820%7D%20%5C%5C%20%20%5C%5C%20%20%20%5Csf%20%5Cimplies%20Density%20%3D%20%203.12%20%5C%3A%20kg%2FL%20)
Answer:
factors affect how human touch perceives softness, like the feel of pressing your fingertip against a marshmallow, a piece of clay or a rubber ball? By exploring this question in detail, a team of engineers and psychologists at the University of California San Diego discovered clever tricks to design materials that replicate different levels of perceived softness.