an isolated conductor of arbitrary shape has a net charge of 1.2 10-5 c. inside the conductor is a cavity within which is a point charge q = 3.5 10-6 c.What is the charge on the cavity wall? What is the charge on the outer surface of the conductor?

Answer:

A. Rotating Crops

Explanation:

Just took the test lets go

Based on the given options, the best method that helps to prevent wind erosion is rotating crops.

Erosion is the removal or washing away of the topmost layer of the earth by agebys of erosion.

The agents of erosion include wind, ice and water.

Wind erosion refers to erosion by wind.

Erosion by wind occurs mostly if the top layer of the eart is devoid of plants.

In order to prevent wind erosion, planting of cover crops and crop rotation is employed.

Therefore, of the given options, the best method that helps to prevent wind erosion is rotating crops.

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Answer:

i think its B or D

Explanation:

its Individual or Organism

Answer:

B

Explanation:

the answer is Organism

Answer:

10.17 m/s in the direction the compact car was going (+)

Explanation:

Law of conservation of momentum states that total P before the collision must equal total momentum after the collision.

P = mv

solve for v, velocity of the two cars stuck together after the collision:

(187kg)(-38 m/s) + (702kg)(23 m/s) = (187 + 702 kg)v

         momentum before               =   momentum after

-7106 kg·m/s + 16146 kg·m/s = 889 kg(v)

9040 kg·m/s = 889 kg(v)

v = 9040 kg·m/s / 889 kg = 10.17 m/s

The focal length of the mirror is 2.4 cm.

We can use the mirror equation to solve this problem:

1/f = 1/d_o + 1/d_i

where f is the focal length of the mirror, d_o is the distance of the object from the mirror, and d_i is the distance of the image from the mirror.

Plugging in the given values, we get:

1/f = 1/12 cm + 1/3.0 cm

1/f = 0.08333 cm^-1 + 0.33333 cm^-1

1/f = 0.41667 cm^-1

f = 2.4 cm

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Answer:

Explanation:

The acceleration of an object given it's velocity and time taken can be found by using the formula

\(a = \frac{v}{t} \\ \)

v is the velocity

t is the time

From the question we have

\(a = \frac{160}{4.5} = 35.55555...\)

We have the final answer as

Hope this helps you

Helium

Have a luvely day!

Answer:

name of the atom is helium

Based on the circled elements in the periodic table’s location, we could infer that most of the circled elements are gases at room temperature. The correct answer is B.

There are 11 elements that are in gaseous state at room temperature. They are Hydrogen (H), Helium (He), Neon (N), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), Fluorine (F), Chlorine (Cl), Nitrogen (N) and Oxygen (O).

Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and chlorine (Cl, element 17) are all gases at room temperature, and also are found as diatomic molecules (H2, N2, O2, F2, Cl2).

Although part of your question is missing, you might be referring to this full question: Consider the circled elements in the periodic table as seen on attached image. Based on their location, we could infer that most of them are:

A) very reactive gases.

B) gases at room temperature.

C) do not react readily with metals.

D) nonreactive solids at room temperature.

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Answer:

Batteries are intended to store chemical energy and then it converts into electricidal energy. So overall, batteries produce energy.

Explanation:

Answer:

it would be 25.44 lbs

Explanation:

Physical properties such as color, shape, size, weight, odor, melting point, boiling point, and density can be observed without destroying the substance.

Physical properties are characteristics of a substance that can be observed and measured without changing the substance's chemical composition. Examples of physical properties include color, density, hardness, melting point, boiling point, and electrical conductivity. These properties are determined through experiments and/or observations. Physical properties can be used to identify and classify a material. They can also be used to differentiate between different forms of the same material, such as different allotropes of the same element. Physical properties are also important for understanding how materials interact with each other and how they respond to the environment.

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Answer:

30

Explanation:

Power=work/time

power=300/10

Hope this helps

Answer:

The correct solution is "33.62 m/s".

Explanation:

The given values are:

Speed

u = 9.8 m/s

Height

s = 52.8 m

As we know,

⇒ \(v^2 = u^2 + 2as\)

On putting the estimated values, we get

⇒      \(=(9.8)^2+2\times 9.8\times 52.8\)

⇒      \(=96.04+1034.88\)    

⇒      \(=\sqrt{1130.92}\)

⇒      \(=33.62 \ m/s\)

The chemical energy of the battery converts to electrical energy and then to radiant energy. Option C is correct.

The energy neither be produced nor be destroyed it just change its form from one to another.

In the given question, the energy is stored in the battery as chemical energy, then it converts to electrical energy which runs through the wire and reaches the bulb where it converts to radiant energy.

Therefore, the chemical energy of the battery converts to electrical energy and then to radiant energy.

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The  resistance of the bulb can be calculated using Ohm's Law, which states that resistance is equal to voltage divided by current.

Therefore, the resistance of the bulb can be calculated as follows:
\(Resistance = \frac{Voltage}{Current}\)
\(Resistance =\frac{3V}{0.6 A}\)
Resistance = 5 ohms
This means that the resistance of the bulb is 5 ohms, which indicates how much the bulb resists the flow of electric current.

The higher the resistance, the more difficult it is for the current to flow through the bulb.
By using Ohm's Law, we can easily calculate the resistance of a bulb that draws a certain amount of current and has a specific potential difference.

This information is important for understanding the behavior of electrical circuits and for selecting the right components for a particular application.

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The spacetime Using Lorentz transformation equation coordinates in the moving frame are (1303.93 m, 3.01 s).

Given information:

An event has spacetime coordinates (x,t)=1,300 m,3.0 s in reference frame S.What are the spacetime that moves in the negative x - direction at 0.03c?We know that the coordinates of the same event as observed from two different inertial frames are related by the Lorentz transformation equations.

Using Lorentz transformation equation:(x', t') = (γ(x − vt), γ(t − vx/c²))where γ = 1/√(1−v²/c²) represents the Lorentz factor, x is the position in the stationary frame, t is time in the stationary frame, x' is the position in the moving frame, t' is time in the moving frame, v is the relative velocity between the two frames and c is the speed of light in vacuum.We are given,x = 1,300 mt = 3.0 s, v = −0.03c (since the motion is in the negative x direction)∴ γ = 1/√(1−v²/c²) = 1/√(1−0.03²) = 1/0.997

The spacetime coordinates in the moving frame, (x', t') = (γ(x − vt), γ(t − vx/c²))= [1/0.997 (1300 - (-0.03c)(3.0))] m, [1/0.997 (3.0 - (-0.03c)(1300)/c²)] s= (1303.93 m, 3.01 s) [correct to 2 decimal places]

Therefore, the spacetime coordinates in the moving frame are (1303.93 m, 3.01 s).

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This question deals with the volume of different shapes, such as sphere and cylinder.

a) volume of the sphere is "33.51 m³".

b) volume of the cylinder is "25.13 m³".

a)

The volume of a sphere is given by the following formula:

\(Volume = \frac{4}{3}\pi r^3\\\\Volume = \frac{4}{3}\pi (2\ m)^3\)

Volume = 33.51 m³

b)

The volume of a cylinder is given by the following formula:

\(Volume = \pi r^2l\\\\Volume =\pi (2\ m)^2(2\ m)\)

Volume = 25.13 m³

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The attached picture shows the formulae of the volume of different shapes.

The total work done on the crate of bananas is 4800 J (the work done to move it horizontally).

Work done is defined as the product of displacement and force, w = FS.

Here,

There are two parts to the work done on the crate of bananas: the work done to move it horizontally and the work done to lift it vertically.

First, let's calculate the work done to move the crate horizontally. The formula for work is,

Work = Force x Distance x cos(Ф)

where theta is the angle between the force and the displacement. In this case, the force is the tension in the rope, and it is pulling horizontally. So, theta is 0 degrees, and cos(Ф) is 1.

The distance the crate is moved horizontally is 5 meters, and the force applied by the motor is,

Force = Power / Velocity = 40 W / (5 m / 120 s) = 960 N

So, the work done to move the crate horizontally is:

Work = 960 N x 5 m x cos(0) = 4800 J

The distance the crate is lifted vertically is not given in the problem, so we cannot calculate the work done to lift the crate without this information.

Therefore, the total work done on the crate of bananas is 4800 J (the work done to move it horizontally).

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Answer:

Speed is the measure of how fast something moves

Explanation:

If we apply same force  to both-an apple or a couch, the object which will accelerate less is couch.

What is acceleration?

Acceleration is the term used to describe the pace at which speed and direction of velocity vary over time. Something is said to be accelerating when it starts to move faster or slower. Even when the speed is constant, motion on a circle accelerates because the direction is always keeps shifting. Both impacts cause all other motions to speed up.

The couch will accelerate less because

F = m a

where, F = force, m = mass, a = acceleration.

This equation can also be written as

a = F/m

It tells us that the acceleration is inversely proportional to mass.

so, in the question given the mass of couch will greater as compared to an apple so the acceleration of the couch will be lesser as compared to apple.

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Answer:

A) lacks the mass of the object

The total magnetic field at the center point between the two squares is \(2 *10^{(-4)}\) Tesla.

Let's assume the current passing through each square of wire is I = 15 mA = \(15 *10^{(-3)} A\).

The magnetic field produced by a square wire at its center can be calculated using the formula for the magnetic field of a long straight wire:

B = (μ₀ * I) / (2 * π * r)

Where:

B is the magnetic field

μ₀ is the permeability of free space\((4\pi × 10^{(-7)} T.m/A)\)

I is the current

r is the distance from the wire

For each square wire, the distance from its center to the center point between the two squares is 1.5 cm = 0.015 m.

Calculating the magnetic field produced by each square wire:

B1 =\((4\pi * 10^{(-7)} T.m/A * 15 * 10^{(-3)} A) / (2 *\pi * 0.015 m)\)

B1 =\(10^{(-4)} T\)

Since the current passes through both squares in a counterclockwise direction, the magnetic fields produced by both squares will have the same magnitude and direction.

Therefore, the total magnetic field at the center point between the two squares is:

B_total = B1 + B1

B_total =\(2 * 10^{(-4)} T\)

B_total = \(2 *10^{(-4)} T\)

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--The complete Question is, Two squares of wire, each with a side length of 4 cm, are placed side by side on a table with a distance of 3 cm between the closest sides of the two squares. A 15 mA current passes counterclockwise through both squares. What is the total magnetic field at the center point between the two squares?--

There are some traits of successful entrepreneurs, these are as follows:

1. He should be a highly motivated towards the work.

2. He sholud be creative in nature. He should think out of box and develop some ideas for the problem.

3. He should have clear vision for the future.

4. He should be very versatile and ready to adapt any changes.

5. He should be ready to take some risk.

6. He should have the ability of decision making and leadership quality.

Answer:

No, a liter is equal to 1000 milliliters

ITS FALSE DUDE ......

HOPE THIS HELPS

Explanation:

E = hc / wavelength

Given that:

h = 6.626 × 10-34 Js

c = 2.998 x 10^8 m/s

wavelength = 263 x 10^-9 m

The particular solution to the nonhomogeneous differential equation is -3x+1+2e⁻ˣ

We are given a non-homogeneous differential equation in the form

=> y′′+4y′+5y=−15x+e⁻ˣy′′+4y′+5y=−15x+e⁻ˣ

The differential equation is called non-homogeneous because it has a non-zero right-hand side.

To solve this differential equation, we first need to find the complementary function, which is the solution to the corresponding homogeneous differential equation y′′+4y′+5y=0.

This homogeneous differential equation has characteristic equation

=> r²+4r+5=0, which has roots r=-2+ i and r=-2- i.

Hence, the complementary function is

=>where c₁ and c₂ are constants determined by the initial conditions.

We then take the first and second derivatives of y_p(x) and substitute them into the differential equation, y′′+4y′+5y=−15x+e⁻ˣ, and simplify. This leads to the system of equations:

a + 4c = -15

-a + 4b - 5c = 0

a + b + 5c = 1

Solving this system of equations, we find that a=-3, b=1, and c=2. Therefore, the particular solution is y_p(x)=-3x+1+2e⁻ˣ

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Answer:

Cosmic ray is not considered electromagnetic radiation.

Explanation:

Electromagnetic radiation refers to

X rays are the rays produced when a negatively charged electrode is heated by electricity and electrons are released, thereby producing energy. It is a type of radiation called EM waves.

Radio wave are wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. It is an EM wave.

Ultraviolet wave Invisible rays that are part of the energy that comes from the sun. It is an example of EM wave.

Cosmic ray is a high-speed particle either an atomic nucleus or an electron that travels through space.

Cosmic ray is not an electromagnetic wave.

Hence

Cosmic ray is not considered electromagnetic radiation

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Answer:

the heat of fusion

Explanation:

Answer:

The 'enthalpy' of fusion is a latent heat,

Explanation:

because, while melting, the heat energy needed to change the substance from solid to liquid at atmospheric pressure is latent heat of fusion, as the temperature remains constant during the process.