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andrew11 [14]
3 years ago
13

A total charge of 6.3×10−8 C is distributed uniformly throughout a 2.7-cm radius sphere. The

Physics
2 answers:
Likurg_2 [28]3 years ago
5 0

Answer:

The volume charge density of the sphere is 7.64\times 10^{-4}\ C/m^3.

Explanation:

It is given that,

Charge, q=6.3\times 10^{-8}\ C

Radius of the sphere, r = 2.7 cm = 0.027 m

Total charge contained divided by its volume is called volume charge density. Mathematically, it is given by :

\rho=\dfrac{Q}{V}

\rho=\dfrac{Q}{4/3\pi r^3}

\rho=\dfrac{6.3\times 10^{-8}}{4/3\pi (0.027)^3}

\rho=7.64\times 10^{-4}\ C/m^3

So, the volume charge density of the sphere is 7.64\times 10^{-4}\ C/m^3. Hence, this is the required solution.

stiks02 [169]3 years ago
4 0
The density is 3.7 x 10-7 C/ m3
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Airida [17]

Question: What is the frequency of a wave that has a wave speed of 120 m/s and a wavelength of 0.40 m?

Answer: The equation that relates frequency of a wave to a waves speed and wavelength is Speed of Wave= Frequency X Wavelength. Since you are given speed and wavelength, you plug those two known numbers into the equation, 120= Frequency X 0.40. You then divide 120 by .4 to get your frequency of 300.

Explanation: this might help for

5 0
3 years ago
Help me find the acceleration
ANEK [815]

a = 3.09 m/s²

<h3>Explanation</h3>

This question doesn't tell anything about how long it took for the car to go through 105 meters. As a result, the <em>timeless </em>suvat equation is likely what you need for this question.

In the <em>timeless</em> suvat equation,

a = \dfrac{v^2 - u^2}{2\; x}

where

  • a is the acceleration of the car;
  • v is the <em>final</em> velocity of the car;
  • u is the <em>initial</em> velocity of the car; and
  • x is the displacement of the car.

Note that <em>v</em> and <em>u</em> are velocities. Make sure that you include their signs in the calculation.

In this question,

  • a is the unknown;
  • v = -10.9 \; \text{m} \cdot \text{s}^{-2};
  • u = -27.7 \; \text{m} \cdot \text{s}^{-2}; and
  • x = - 105 \; \text{m}.

Apply the <em>timeless</em> suvat equation:

a = \dfrac{v^{2} - u^{2}}{2\; x}\\\phantom{a} = \dfrac{(-10.9)^{2} - (-27.7)^{2}}{2 \times (-105)}\\\phantom{a} = 3.09 \; \text{m} \cdot \text{s}^{-2}.

The value of a is greater than zero, which is reasonable. Velocity of the car is negative, meaning that the car is moving backward. The car now moves to the back at a slower speed. Effectively it accelerates to the front. Its acceleration shall thus be positive.

7 0
3 years ago
What is an error in a lab mean?
timurjin [86]
You have done something incorrectly. such as your data. 
5 0
3 years ago
Which of the following is a vector quantity (a)mass (b)speed (c)time (d)acceleration
rusak2 [61]

(d) Acceleration is a vector quantity

5 0
4 years ago
Hey! anybody knows the answer then help me i will mark your answer!!!
Volgvan

10/9

Explanation:

option 2 is the correct answer

8 0
3 years ago
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