The statement ‘An advantage of
electron microscopes compared to light microscopes is that electron microscopes
are inexpensive and commonly used in most biology laboratories allow you to view living cells, while light microscopes
do not have higher resolution that allows you to view smaller specimens allow
you to view the true colors of the specimens being viewed’ is true. In fact,
electron microscope is more efficient than a light microscope due to its
mechanism using only light without magnifying the specimen a thousand times.
Answer: 6.21 m/s opposite to Janet
Explanation:
Given
mass of Janet ![m_j=59\ kg](https://tex.z-dn.net/?f=m_j%3D59%5C%20kg)
mass of Sarah ![m_s=32\ kg](https://tex.z-dn.net/?f=m_s%3D32%5C%20kg)
The initial velocity of Janet
The final velocity of Janet after the collision is ![v_1=2\ m/s](https://tex.z-dn.net/?f=v_1%3D2%5C%20m%2Fs)
the final velocity of Sarah after the collision is ![v_2=3\ m/s](https://tex.z-dn.net/?f=v_2%3D3%5C%20m%2Fs)
Conserving linear momentum
![\Rightarrow m_ju_1+m_su_2=m_jv_1+m_sv_2\\\Rightarrow 59\times 7+32\times u_2=59\times 2+32\times 3\\\Rightarrow 32u_2=118+96-413\\\Rightarrow u_2=\frac{-199}{32}=-6.21\ m/s](https://tex.z-dn.net/?f=%5CRightarrow%20m_ju_1%2Bm_su_2%3Dm_jv_1%2Bm_sv_2%5C%5C%5CRightarrow%2059%5Ctimes%207%2B32%5Ctimes%20u_2%3D59%5Ctimes%202%2B32%5Ctimes%203%5C%5C%5CRightarrow%2032u_2%3D118%2B96-413%5C%5C%5CRightarrow%20u_2%3D%5Cfrac%7B-199%7D%7B32%7D%3D-6.21%5C%20m%2Fs)
Negative indicates the direction of velocity is opposite than of Janet
I think the mantle is mostly made up of silicon. I am not sure of the answer.
Differences in elevation are best shown using a topographic map. This is because it uses a large-scale detail representation of the the Earth's relief, mostly by using contour lines. Some traditional definitions show both natural and manmade features, which make it the best map to use when dealing with elevations.