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3 years ago

What will happen when a light bulb is removed from the circuit below

Physics

1 answer:

Nataliya [291]3 years ago

6 0

Answer:

C. The brightness of the remaining light bulbs will not change

Explanation:

If the battery is assumed ideal, the voltage supplied to each of the remaining two bulbs is still 9 volts. This will drive the same current through the fixed resistance of each bulb both before and after the third bulb is removed.

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A radium atom has 88 protons and 226 neutrons. How many electrons does it have?

Ymorist [56]

Answer:

No. of electrons = 88

Explanation:

Given that,

No. of protons = 88

No. of neutrons = 226

We need to find the number of electrons it have in a radium atom.

In an atom, the number of protons is equal to the number of electrons. There are 88 protons in this case.

Hence, there are 88 electrons in the radium atom.

4 0

3 years ago

A particular cylindrical bucket has a height of 36.0 cm, and the radius of its circular cross-section is 15 cm. The bucket is em

Andrew [12]

Answer:

12 cm

Explanation:

$P_1$ = Initial pressure = $P_a=1\times 10^5\ Pa$

$P_2$ = Final pressure = $P_a+\rho_w gh$

h = Depth of cylinder = 36 cm

g = Acceleration due to gravity = 10 m/s²

$\rho_w$ = Density of water = 1000 kg/m³

$h_1$ = Depth of lake = 20 m

From the ideal gas relation we have

$P_1V_1=P_2V_2\\\Rightarrow P_a(\pi r^2h)=(P_a+\rho_w gh_1)\pi r^2h'\\\Rightarrow 1\times 10^5\times 36=(1\times 10^5+1000\times 10\times 20)h'\\\Rightarrow h'=\dfrac{1\times 10^5\times 36}{1\times 10^5+1000\times 10\times 20}\\\Rightarrow h'=12\ cm$

The height of the cylinder of air in the bucket when the bucket is at the given depth is 12 cm

6 0

4 years ago

Which section of the reaction represents the reactants? A) a B) b C) c D) d

ivann1987 [24]

This question is incomplete, but I can do it for you, considering the equation to be *In its most famous form*:
A+B⇒C+D
A and B here are the reactants, while C and D are the products.
The reactants are generally the input materials in the beginning of any chemical reactions and they usually, if not always, are on the left hand side of the chemical equation. While the products are on the right hand side and are the final output of the chemical reaction.

Hope this helps.

3 0

3 years ago

Read 2 more answers

Calculate the energy (in MeV) released when α decay converts uranium 232U (atomic mass = 232.037146 u) into thorium 228Th (atomi

Studentka2010 [4]

To solve this problem it is necessary to apply the concepts related to the energy released through the mass defect.

Mass defect can be understood as the difference between the mass of an isotope and its mass number, representing binding energy.

According to the information given we have that the reaction presented is as follows:

$^{232}U_{92} \Rightarrow ^{228}Th_{90}+^4He_2$