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Alex
3 years ago
14

A 3.5-cm radius hemisphere contains a total charge of 6.6 × 10–7

Physics
1 answer:
spayn [35]3 years ago
4 0

As per Gauss Law

Net flux through enclosed surface is

\phi = \frac{Q}{\epsilon_0}

here through this hemisphere total flux will pass through two portions

1). from the curved surface

2). from flat circular base

so now we have

\phi_{base} + \phi_{surface} = \frac{Q}{\epsilon_0}

given that

Q = 6.6 * 10^{-7} C

\phi_{surface} = 9.8 * 10^4

now we have

\phi_{base} + 9.8*10^4 = \frac{6.6*10^7}{8.85 * 10^{-12}}

\phi_{base} = - 9.8 *10^4 + 7.46 * 10^4

\phi_{base} = - 2.34 * 10^4 N*m^2/C


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An open pipe of length 0.39 m vibrates in the third harmonic with a frequency of 1400 Hz what is the distance from the center of
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Length of the pipe = 0.39 m

Number of harmonics = 3

Now there are 3 loops so here we can say

3\times \frac{\lambda}{2} = 0.39

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we need to find the distance of nearest antinode

So distance between node and its nearest antinode will be

d = \frac{\lambda}{4}

d = \frac{0.26}{4} = 0.065 m = 6.5 cm

So the distance will be 6.5 cm

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3 years ago
What is the heat extracted from the cold reservoir for the refrigerator?
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What is the heat extracted from the cold reservoir for the refrigerator shown in(Figure 1) ? Assume that W1 = -123J and W2 = 88J . 

<span>Qc= _________ </span>

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3 years ago
The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H2O) and O2 gas. Which co
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2 in front of water and 1 in front of oxygen

Explanation:

This question is describing balancing a chemical reaction. A balanced chemical reaction has the same number of atoms of each elements on both the reactant and product side. According to the question, the reactants contains 4 atoms of oxygen. The reactants give rise to water (H20) and O2 in the products side.

This reaction is most likely the decomposition of hydrogen peroxide (H2O2) as follows:

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Based on the description, H2O2 will be 2H2O2 as it is said to contain four atoms of oxygen. This means that, in order to have a balanced equation, we must place coefficient 2 in front of water and coefficient 1 in front of oxygen. That is;

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6 0
2 years ago
Read 2 more answers
Leia is presenting her project about gravity to her class. She says that both mass and distance affect how strong the gravitatio
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5 0
3 years ago
An open rectangular tank 1 m wide and 2 m long contains gasoline to a depth of 1 m. If the height of the tank sides is 1.5 m, wh
lara [203]

Answer:

a_y = 4.9\ m/s^2

Explanation:

Given,

Width of rectangular tank, b = 1 m

Length of the tank, l = 2 m

height of the tank, d = 1.5 m

Depth of gasoline on the tank, h = 1 m

\dfrac{dz}{dy}=-\dfrac{1.5-1}{1}

\dfrac{dz}{dy}=-0.5

The differential form with the acceleration

\dfrac{dz}{dy}=\dfrac{-a_y}{a_z + g}

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0.5=\dfrac{a_y}{0 + 9.8}

a_y = 9.8\times 0.5

a_y = 4.9\ m/s^2

Hence, Horizontal acceleration of the gasoline before gasoline would spill is equal to 4.9 m/s²

3 0
3 years ago
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