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Alekssandra [29.7K]
2 years ago
6

Three containers are filled with water to the same level. Identical marbles are dropped into all the three containers. In which

container will the water level be the highest?
a. P

b. Q

c. R

d. The level will be the same in all the three containers.​

Physics
2 answers:
dimaraw [331]2 years ago
5 0

Answer:

P

Explanation:

,............................................ I have. a doubt too on D

slamgirl [31]2 years ago
5 0
Answer: D
The answer is d
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What are the rules for setting up an integral of rotation?
Angelina_Jolie [31]

Setting up an integral of rotation is used as a method of of calculating the volume of a 3D object formed by a rotated area of a 2D space. Finding the volume is similar to finding the area, but there is one additional component of rotating the area around a line of symmetry.

<span>First the solid of revolution should be defined. The general  function is y=f(x), on an interval [a,b].</span>

Then the curve is rotated about a given axis to get the surface of the solid of revolution. That is the integral of the function.

<span>It all depends of the function f(x), which must be known in order to calculate  the integral.</span>

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3 years ago
Beryllium has a charge of +2, and bromine has a charge of –1. Which is the best name for the ionic bond that forms between them?
postnew [5]
There are 2 elements:
Beryllium ( Be + 2  ), metal
Bromine ( Br - 1  ), non - metal
They form the ionic bond:
Be + Br2 → Be Br2
Naming the ionic compound:
on the 1st place is metal. On the 2nd place is non-metal. If compound is binary, use the element name and change ending to - ide .
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3 years ago
A solenoidal coil with 22 turns of wire is wound tightly around another coil with 330 turns. The inner solenoid is 21.0 cm long
Airida [17]

Answer:

0.00027646\ T

2.33\times 10^{-5}\ H

-0.04194 V

Explanation:

N_2 = Number of turns in outer solenoid = 330

N_1 = Number of turns in inner solenoid = 22

I_1 = Current in inner solenoid = 0.14 A

\dfrac{dI_2}{dt} = Rate of change of current = 1800 A/s

\mu_0 = Vacuum permeability = 4\pi \times 10^{-7}\ H/m

r = Radius = 0.0115 m

Magnetic field is given by

B=\mu_0\dfrac{N_2}{l}I\\\Rightarrow B=4\pi \times 10^{-7}\times \dfrac{330}{0.21}\times 0.14\\\Rightarrow B=0.00027646\ T

The  average magnetic flux through each turn of the inner solenoid is 0.00027646\ T

Magnetic flux is given by

\phi=BA\\\Rightarrow \phi=0.00027646\times \pi 0.0115^2\\\Rightarrow \phi=1.14862\times 10^{-7}\ wb

Mutual inductance is given by

M=\dfrac{N_1\phi}{I}\\\Rightarrow M=\dfrac{22\times 1.14862\times 10^{-7}}{0.14}\\\Rightarrow M=2.33\times 10^{-5}\ H

The mutual inductance of the two solenoids is 2.33\times 10^{-5}\ H

Induced emf is given by

\epsilon=-M\dfrac{dI_2}{dt}\\\Rightarrow \epsilon=-2.33\times 10^{-5}\times 1800\\\Rightarrow \epsilon=-0.04194\ V

The emf induced in the outer solenoid by the changing current inthe inner solenoid is -0.04194 V

3 0
3 years ago
for a body moving in a straight line / its distance and displacement can be same. justify with an example?
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For example, let's say you are walking to your friends house directly across the street from your house. All you need to do is walk in a strsight line from the front of your house and you will get to your friends house. The distance and displacement will be the same.

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Alinara [238K]
<h2>Answer:</h2>

We have limited combinations of elements to make compounds because most of the compounds are not stable due to different chemical properties of elements.

<h2>Explanation:</h2>

Elements combine to form compounds but not all of the elements combine in the same way. The individual properties of each element must be taken into account before combining them.

The most common types of compounds are metallic compounds, ionic compounds, and covalent compounds. All compounds made in the laboratory are not stable and the same phenomenon occurs in nature as well. Elements that have more tendency to react with other elements are far less than the total number of elements in the periodic table.

Every element tries to make a bond with another element that fulfill the requirements of both of them. For example if an element needs to lose its one electron will always try to make compound with another element that will have the tendency to gain one electron. They will not make bond with other random element so in this way  the combinations of elements that make compounds becomes limited.

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