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Murljashka [212]

2 years ago

7

Prompt Write about what you have learned about parts of the atom and the

1 answer:

Kay [80]2 years ago

5 0

Answer:

The table can be used to predict the properties of elements, even those that have not yet been discovered. Columns (groups) and rows (periods) indicate elements that share similar characteristics. The table makes trends in element properties apparent and easy to understand. The table provides important information used to balance chemical equations. Atoms are important because they form the basic building blocks of all visible matter in the universe. There are 92 types of atoms that exist in nature, and other types of atoms can be made in the lab. The different types of atoms are called elements. Hydrogen, gold and iron are examples of elements comprised of unique types of a single kind of atom.

Explanation:

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anyanavicka [17]

It is itself. This question does not make sense.

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3 years ago

Does a basketball, baseball, tennis ball, or marble MOST LIKELY have the smallest volume?

Fantom [35]

Marble i think not quite sure doe

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Please help if you can.

VMariaS [17]

Initially there were 10 bulbs of 60 Watt power

So total power of all bulbs = 60 * 10 = 600 W

now each bulb used for 4 hours daily

so total energy consumed daily

$E = P * t$

$E = 600 * 4 = 2400 Wh$

$E = 2.4 kWh$

now we have total power consumed in 1 year

$E = 365 * 2.4 = 876 kWh$

cost of electricity = 10 cents/ kWh

so total cost of energy for one year

$P_1 = 876 * 10 = 8760 cents = $87.60$

Now if all 60 Watt bulbs are replaced by 30 Watt bulbs

So total power of all bulbs = 30 * 10 = 300 W

now each bulb used for 4 hours daily

so total energy consumed daily

$E = P * t$

$E = 300 * 4 = 1200 Wh$

$E = 1.2 kWh$

now we have total power consumed in 1 year

$E = 365 * 1.2 = 438 kWh$

cost of electricity = 10 cents/ kWh

so total cost of energy for one year

$P_1 = 438 * 10 = 4380 cents = $43.80$

total money saved in 1 year

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3 0

3 years ago

a father and his son are racing down a mountain. if they're traveling at the same velocity who has more kinetic energy

lakkis [162]

Answer:

I think it's the son

Explanation:

bcs he might love it

8 0

2 years ago

A dogsled team has a total momentum of 1710 kg•m/s. If the team has a total mass of 450 kg, what is its speed?

HACTEHA [7]

Answer:

3.8 m/s

Explanation:

Momentum is the product of mass and velocity hence

Momentum=mv where m is mass and v is the velocity of an object

Making v the subject of the formula then

$v=\frac {momentum}{m}$

Substituting 1710 kgm/s for momentum and 450 Kg for mass we obtain

$v=\frac {1710 Kgm/s}{450 Kg}=3.8 m/s$

Hence the speed of dogsled team is 3.8 m/s

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3 years ago

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