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2 years ago

The amount of kinetic energy an object has depends on

Chemistry

2 answers:

Vladimir79 [104]2 years ago

7 0

it depends on the mass & speed of the moving object.^-^

Alex777 [14]2 years ago

3 0

How much it has to drop and how heavy it is. Hope this is what you're looking for:)

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find the volume of an item using a scale and waterA crown made of alloy of gold and silver has a volume of 60cm3and mass of 1050

KiRa [710]

Answer:

The mass of gold in crown is 960.61 g.And the volume of gold is $49.77 cm^3$ .

Explanation:

Density is defined as mass of the substance present in unit volume of the substance.

Mass of gold in an alloy of crown= m

Mass of silver in an alloy of crown = M

Volume gold in an alloy of crown= v

Volume of silver in an alloy of crown = V

Density of gold = $19.3 g/cm^3$

Density of silver = $10.5 g/cm^3$

Volume of the crown = $60 cm^3$

$60 cm^3=v+V$

$60 cm^3=\frac{m}{19.3 g/cm^3}+\frac{M}{10.5 g/cm^3}$ ..(1)

Mass of eh crown = 1050 g

$1050g =m+M$ ..(2)

Solving equation (1) and (2):

m = 960.61 g

M = 89.39 g

Volume of the gold = v = $\frac{960.61 g}{19.3 g/cm^3}=49.77 cm^3$

Volume of silver = V = $60 cm^3-v=60 cm63-49.77 cm63=10.23 cm^3$

The mass of gold in crown is 960.61 g.And the volume of gold is $49.77 cm^3$ .

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3 years ago

What is the name of the ionic compound rbcl?

Kamila [148]

Rubidium Chloride is the answer i believe

3 0

3 years ago

21<2x+3 help fast please

kolezko [41]

Answer:

Explanation:

x in (-oo:+oo)

2 < (1/2)*x-3 // - (1/2)*x-3

2-((1/2)*x)+3 < 0

(-1/2)*x+2+3 < 0

5-1/2*x < 0 // - 5

-1/2*x < -5 // : -1/2

x > -5/(-1/2)

x > 10

x in (10:+oo)

(10:+oo)

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2 years ago

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Whenever a number or a variable is divided by itself, it is always equal to

Jobisdone [24]

Answer:itself

Explanation:

Duh

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3 years ago

How many protons are there in H2S ?

Vinvika [58]

16. Hope this helps!!

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3 years ago