Answer: P= W/t so P=50/20 =2.5 W
Nonmetals usually exist as molecules, combining with atoms of themselves.
Nonmetals can exist on their own as individual atoms.
Metallic elements can exist on their own as individual atoms.
Explanation:
Non-metals usually exists as molecules in which their atoms combines with one another.
Non-metals are capable of covalently bonding with themselves by sharing their electrons and establishing an atomic bond. Metals cannot do this because they prefer to lose their electrons due to the large density of electrons in them. For example O₂, N₂ e.t.c
Non-metals can exist on their own as individual atoms. A stable atom with an octet configuration is generally stable and can exist on its own. A group of non-metals in group 8 can exist on their own. For example Neon gas is an atom of neon, Argon e.t.c
Metallic elements can also exists as individual atoms on their own. They have large sizes and prefers to lose electrons. Gold, Copper, Sodium are some of the metallic elements freely occur as stable individual atoms.
Learn more:
Metals and non-metals brainly.com/question/2758034
Properties of metals brainly.com/question/2474874
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Answer:
Newtons first law
Explanation:
Objects stay at rest until a force acts on it causing it to move from its resting position
Answer:
See the answers below
Explanation:
We will solve this problem by calculating each part separately.
A 500 W hair dyer is used to dry hair for 6 minutes a day for 3 days.
Energy can be calculated by multiplying the value of the power of the equipment by the amount of time of use.
The cots of electricity is 5.6 cents per kWh. How much would it cost to operate the laptop for 24 hours a day for one week?
We know that the power of the latop is 75 [W], then we can calculate the cost, multiplying the value of the power by the value of the cost by the time of use of the computer.
A toaster oven is 85% efficient. It uses 1200 J of energy. How much thermal energy is it producing?
Efficiency is defined as the relationship between the energy obtained on the energy delivered. Almost always the energy delivered is greater than the energy obtained (first law of thermodynamics).
Therefore.