Physics, 06.11.2020 02:00 victoriazh2005
The periodic table is an arrangment of the chemical elements, ordered by atomic number, into families, and by doing so illustrates
the periodic properties of the elements. If we review the elements found in the second column of the periodic table, the alkali
earth metals, we know one characteristic common to all elements in this family, besides being metals, is that they are
ng
5
A)
solid at room temperature.
B)
not very reactive elements.
found deep in the layers of the mantle.
D)
react readily with other metals to form compounds.
Answers: 3
Physics, 21.06.2019 22:50, sarahfsakrani
Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)
Answers: 2
Physics, 22.06.2019 11:20, leandrogarin37p2g5ds
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.
Answers: 1
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