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antoniya [11.8K]
3 years ago
14

1. Who first published the classification of the elements that is the basis of our periodic table today?

Physics
1 answer:
Gre4nikov [31]3 years ago
4 0
That particular group of elements is reffered to as the "Noble Gasses"--a title that comes from the fact that these gases are very "secure" and don't mix well with other elements.
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Which device or set of devices is contained in a mobile telephone?
Masja [62]

 

Un teléfono móvil o teléfono celular es un dispositivo portátil que puede hacer o recibir llamadas a través de una portadora de radiofrecuencia, mientras el usuario se está moviendo dentro de un área de servicio telefónco.​ El enlace de radiofrecuencia establece una conexión con los sistemas de conmutación de un operador de telefonía móvil, que proporciona acceso a la red telefónica pública conmutada (PSTN). La mayoría de los servicios de telefonía móvil modernos utilizan una arquitectura de red celular, y por lo tanto los teléfonos móviles son, con frecuencia, llamados celulares, especialmente en Hispanoamérica. En España, se utiliza más el término móvil.

6 0
3 years ago
A 30 kg rock sits motionless on the ground. What is the normal force on the rock?
Anna [14]

Answer:30 kg

Explanation:

5 0
3 years ago
A certain geothermal power station has a power output of 200,000W.
Ne4ueva [31]

Answer:4800 kWh

Explanation:

Given

Power output of station =2,00,000 W or 200 kW

because 1 kW=1000 W

For 24 hours, it will generate 200\times 24=4800\ kWh

5 0
3 years ago
A car was traveling at a velocity of 8 m/s and then accelerated at a rate of 5 m/sr^2, reaching a velocity of 85 m/s. How far di
juin [17]

Answer:

716.1 m

Explanation:

A car was travelling at a velocity of 8m/s

It accelerated at 5m/s^2

It finally reached a velocity of 85m/s

The distance can be calculated by applying the fourth equation of motion

V^2= U^2 +2as

V= 85m/s

U= 8m/s

a= 5m/s^2

85^2= 8^2 + 2(5)(s)

7225= 64 + 10s

7225-64= 10s

7161=10s

s= 7161/10

= 716.1 m

Hence the car travelled at a distance of 716.1 m

5 0
3 years ago
Elements known as noble gases do not have the ability or the room in their valence
Eva8 [605]

Answer:

true

Explanation:

noble gases are octet meaning they they have eight electrons in their outer shell so the are stable

4 0
2 years ago
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