Its B- Ground, just took the test
Answer:
non metals
Explanation:
The elements on the right-hand side of the periodic table are the nonmetals. Nonmetals properties are: usually poor conductors of heat and electricity. often liquids or gases at room temperature and pressure
Answer:
a = 162.7 m/s²
Explanation:
given,
radius = 1.5 m
height above ground level = 2 m
horizontal distance = 10 m
magnitude of centripetal acceleration = ?
we know,
centripetal acceleration
a =![\dfrac{v^2}{r}](https://tex.z-dn.net/?f=%5Cdfrac%7Bv%5E2%7D%7Br%7D)
using equation of motion
![s = u t + \dfrac{1}{2}at^2](https://tex.z-dn.net/?f=s%20%3D%20u%20t%20%2B%20%5Cdfrac%7B1%7D%7B2%7Dat%5E2)
![s =\dfrac{1}{2}gt^2](https://tex.z-dn.net/?f=s%20%3D%5Cdfrac%7B1%7D%7B2%7Dgt%5E2)
![t = \sqrt{\dfrac{2s}{g}}](https://tex.z-dn.net/?f=%20t%20%3D%20%5Csqrt%7B%5Cdfrac%7B2s%7D%7Bg%7D%7D)
![t = \sqrt{\dfrac{2\times 2}{9.8}}](https://tex.z-dn.net/?f=%20t%20%3D%20%5Csqrt%7B%5Cdfrac%7B2%5Ctimes%202%7D%7B9.8%7D%7D)
t = 0.64 s
velocity
![v = \dfrac{s}{t}](https://tex.z-dn.net/?f=v%20%3D%20%5Cdfrac%7Bs%7D%7Bt%7D)
![v = \dfrac{10}{0.64}](https://tex.z-dn.net/?f=v%20%3D%20%5Cdfrac%7B10%7D%7B0.64%7D)
v = 15.625 m/s
centripetal acceleration
a =![\dfrac{15.625^2}{1.5}](https://tex.z-dn.net/?f=%5Cdfrac%7B15.625%5E2%7D%7B1.5%7D)
a = 162.7 m/s²
Answer:
C) scientist use experiments to test their ideas
The lowest surface temperature in the solar system was recorded on Uranus (-224 degrees Celsius). The temperature of a planet does not only depend on the amount of solar radiation that it receives but also on the amount of heat that it gives off. Because of Uranus' orientation it absorbs little radiation which makes it colder than Neptune although Neptune is further away from the Sun. <span />