Find the size of the image formed in the situation shown in figure.
A) 0.5 cm
B) 0.6 cm
C) 1.2 cm
D) 1 cm

The position of the center of mass of the system remains constant during the experiment.

The principle of conservation of linear momentum states that the total momentum of the system before after collision is always conserved for both elastic and inelastic collision.

\(m_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2\ \ (elastic)\\\\m_1 u_1 + m_2 u_2 = v(m_1 + m_2 ) \ (inelastic)\)

The total kinetic energy of the system is conserved for perfectly elastic collision BUT not conserved for inelastic collision.

The center mass of the system is always constant.

Thus, the position of the center of mass of the system remains constant during the experiment.

Learn more about elastic and inelastic collision here: https://brainly.com/question/7694106

Answer:

The acceleration due to gravity on the planet Fergie is 0.0123 m/s^2.

Explanation:

We want to find the acceleration due to gravity on the planet Fregie. Let it be g m/s^2.

Now, the acceleration due to gravity is defined through the following equation:

\(mg = GMm/R^2\)

where m is the mass of an object on the surface of the planet, M is the mass of the planet, R is the radius of the planet, and G is the universal Gravitational constant.

Subsituting values for M = 6.23*10^23, R = 5.79*10^7, G = 6.67*10^(-11), we get

g = 0.0123 m/s^2.

Thus the acceleration due to gravity on the planet Fergie is 0.0123 m/s^2.

To know more about the acceleration due to gravity, see

https://brainly.com/question/88039

The Argon gas trapped between the glass panes to slow the transfer of heat, which insulates the room from the outside heat in the summer and insulates the heat of the room or traps the heat inside the room in the winter.

As the Argon gas is slow-moving gas than the air, thus, the transfer of heat slowly takes place. Thus, Argon gas is a poor conductor or a good insulator.

The gas trapped in between the glass panes contains moisture, that can condense and make the glass panes appear cloudy.

Thus, by adding the Argon gas between the glass panes, the thermal insulation efficiency increases.

Hence, option B is the correct answer.

Answer:

The rate of heat loss from the metal sphere at 827°C is twice the rate of heat loss from the same sphere at 427°C.

Explanation:

The rate of heat loss from an object can be determined using Newton's law of cooling, which states that the rate of heat loss is proportional to the temperature difference between the object and its surroundings. Mathematically, this is expressed as...     

\(Q = k \Delta T\)

Where...

\(\hrulefill\)

For the sphere at 827°C:

\(\Delta T_1= 827\°C - 27\°C \\\\\Longrightarrow \boxed{\Delta T_1=800\°C}\)

For the sphere at 427°C:

\(\Delta T_2= 427\°C - 27\°C \\\\\Longrightarrow \boxed{\Delta T_2=400\°C}\)

Assuming that the cooling constant k remains constant, we can compare the rates of heat loss.

\(\dfrac{Q_1}{Q_2} =\dfrac{\Delta T_1}{\Delta T_2}\\\\\Longrightarrow \dfrac{Q_1}{Q_2} =\dfrac{800\textdegree C}{400\textdegree C} =\boxed{2}\)

Thus, the rate of heat loss from the metal sphere at 827°C is twice the rate of heat loss from the same sphere at 427°C when the temperature of the surroundings is 27°C.

The output current for the given step down transformer is 30A.

What is the step down transformer?

A step down transformer is a passive device that converts high voltage power to low voltage power, while the output current is higher than the  input current. They are used in power adaptors and rectifiers to decrease the voltage to the desired level. It works according to Faraday's law of Electromagnetic induction.

The current in the windings of a step down transformer is inversely proportional to the voltage in windings as:

Input voltage / Output voltage = Output current / Input current

220 / 110 = Outout current / 15

Output current = 30A

Hence, the output current (30A) obtained is higher than the given input current (15A).

Learn more about step down transformer here:

https://brainly.com/question/14929231

#SPJ1

The only option that is not a part of the particle theory is, particles move faster when cooled.

The particle theory of matter states that all matter consists of tiny particles which are in state of constant motion, colliding with one another and with of the containing vessel.

These theory can be summarized as;

Thus, the only option that is not a part of the particle theory is, particles move faster when cooled.

Learn more about particle theory of matter here: https://brainly.com/question/11155407

Answer:

Um its the vbuck card on the 3 thrid level

Explanation:

Bc its a vbuck card you know sihdg;aig

Videos can be streamed from the cloud to a computer with no loss in quality because Digital signals are used to transmit data to and from the cloud.

How do digital signals work?

An established or one that represents data as a step made up of discrete values is known as a digital signal. There is no noise produced by digital signals. Electronic signals sent as pulses are used to transmit digital signals to computers. These signals can be found in things like digital phones and computers.

Because digital signals are used to transport data to and from the cloud, it should be noted that videos are said to stream from the cloud to a computer without quality degradation.

Videos can be streamed from the cloud to a computer with no loss in quality because Digital signals are used to transmit data to and from the cloud.

To know more about Digital signals, check out:

https://brainly.com/question/28160561

#SPJ1

The powder takes the shape of a magnetic field.

Powder morphology is connected to the shape and size of powder particles and is strongly dependent on the manufacturing methods. For example, mechanical alloying/mechanical milling leads to unevenly shaped powder particles, while gas dissipation leads to spherically shaped particles.

Atomized metal powder particles come in two basic particle shapes: those that are almost superbly round called spherical, and those that have lopsided, rounded shapes, called spheroidal.

So we can conclude that Powders are a group of particles of different sizes.

Learn more about powder here: brainly.com/question/20628766

#SPJ1

The following elements are matched with their number of neutrons

1. 88 38 Sr - b. 50

2. 39 19 Ka - a. 20

3. 14 6 Carbon - c. 8

4. 234 90 Thorium plus 4 2 Helium - d. 74

To determine the number of neutrons for each element, we need to subtract the atomic number (which represents the number of protons) from the mass number (which represents the total number of protons and neutrons).

1. 88 38 Sr:

The atomic number of strontium (Sr) is 38, which means it has 38 protons. The mass number is 88. Subtracting the atomic number from the mass number: 88 - 38 = 50. Therefore, the number of neutrons in strontium is 50.

2. 39 19 Ka:

The atomic number of potassium (K) is 19, indicating 19 protons. The mass number is 39. Subtracting the atomic number from the mass number: 39 - 19 = 20. Hence, the number of neutrons in potassium is 20.

3. 14 6 Carbon:

The atomic number of carbon (C) is 6, representing 6 protons. The mass number is 14. Subtracting the atomic number from the mass number: 14 - 6 = 8. Thus, the number of neutrons in carbon is 8.

4. 234 90 Thorium plus 4 2 Helium:

The atomic number of thorium (Th) is 90, which means it has 90 protons. The mass number is 234. Subtracting the atomic number from the mass number: 234 - 90 = 144. However, there is also an additional helium (He) isotope mentioned with a mass number of 4 and atomic number of 2. Adding the number of neutrons from thorium and helium: 144 + 2 = 146. Hence, the number of neutrons in thorium plus helium is 146.

For more such questions on elements, click on:

https://brainly.com/question/20096027

#SPJ8

Answer:

number 3

Explanation:

3 represents runoff

Runoff is the water collected after rainfall that drains from the surface area of land. It will be tricky to choose 4 which is likely a smaller waterbody draining to a bigger waterbody

hope it helped

Answer:

Disambiguation

Explanation:

Fg is an abbreviation used in physics to describe the amount of force exerted by gravity on an object, normally represented in units such as the newton.

Answer:Gravitational forces

Explanation:Is used in physics, used when asked to calculate the the force attracted to the nucleus

Answer:

See below

Explanation:

You probably know

F = ma    then

  a = F/m   = 720/ 1200 = .6 m/s^2    

              since it is a BRAKING force , the acceleration will be negative

                      = - .6 m/s^2

vf = 0  

    vf = vo + at

                0 = 20 + (-.6)t     shows t =  33 1/3 seconds

The total distance covered by the car is 4 kilometers, this is because we are taking into account displacement and not just distance.

Displacement is defined as the change in the position of an object while distance is an object's overall movement in a directionless fashion.

There are many different units that can be used to measure distance (inches, feet, miles, kilometers, and centimeters), but the meter is the SI unit. It is a scalar amount because it does not consider

On the number line, we can see the movement as follows

1 0 -1 -2 -3= 4km

Distance is always positive and never gets smaller as you move. Displacement can be negative, positive, or zero because it refers to the change in the position of an object with respect to its original location.

Learn more about displacement here:

https://brainly.com/question/14422259

#SPJ!

Answer:

It burns easily & It produces a lot of energy

Explanation:

Coal burns easily and thus is ideal for use in a power plant.  

• To generate electric power in the United States, the main fuel used is coal.  

• It is used as it is burned easily and thus producing enormous amount of energy.  

• In the power plants, the lignite, bituminous coal, or subbituminous coal is burned.  

• The heat generated by the burning of the coal is used to transform water into high pressure steam that mediates a turbine, which generates electricity.  

• About 23 percent of the electricity in the United States is produced by the burning of coal.  

Thus, the correct answer is that coal burns easily.

To know more about:

https://brainly.com/question/3715778

Answer:

The student must change the launch angle from 20º to 45º to maximize the horizontal distance.

Explanation:

The dart experiments a parabolical motion, which is the combination of horizontal uniform motion and vertical uniform accelerated motion due to gravity, in which effects from air friction and Earth's rotation can be neglected. The equations of motion are described below:

\(x = x_{o}+v_{o}\cdot t \cdot \cos \theta\) (1)

\(y = y_{o}+v_{o}\cdot t\cdot \sin \theta +\frac{1}{2}\cdot g\cdot t^{2}\) (2)

Where:

\(x_{o}\), \(y_{o}\) - Initial coordinates of the dart, measured in meters.

\(x\), \(y\) - Current coordinates of the dart, measured in meters.

\(v_{o}\) - Initial velocity of the dart, measured in meters per second.

\(g\) - Gravitational acceleration, measured in meters per square second.

\(t\) - Time, measured in seconds.

\(\theta\) - Launch angle, measured in sexagesimal degrees.

According to the statement, we need to determine the launch angle when \(\Delta x = x-x_{o} > 0\), \(\Delta y = y-y_{o}= 0\) and \(v_{o} > 0\). Then, we obtain the following system of linear equations:

\(\Delta x = v_{o}\cdot t \cdot \cos \theta\) (1b)

\(v_{o}\cdot \sin \theta + \frac{1}{2}\cdot g \cdot t = 0\) (2b)

By (2b), we clear time as follows:

\(t = -\frac{2\cdot v_{o}\cdot \sin \theta}{g}\)

And it is applied in (1b) afterwards:

\(\Delta x = -\frac{2\cdot v_{o}^{2}\cdot \sin\theta \cdot \cos\theta}{g}\)

\(\Delta x = -\frac{v_{o}^{2}\cdot \sin 2\theta}{g}\) (3)

Where \(\Delta x\) is the horizontal distance, measured in meters.

In order to determine the launch angle such that distance is maximized, we require the first and second derivatives of the function. That is:

First derivative

\(\Delta x' = -\frac{2\cdot v_{o}^{2}\cdot \cos 2\theta}{g}\) (4)

Second derivative

\(\Delta x'' = \frac{2\cdot v_{o}^{2}\cdot \sin 2\theta}{g}\) (5)

By equalizing (4) to zero, we find the following trigonometric equivalence:

\(\cos 2\theta = 0\)

\(2\cdot \theta = 90^{\circ}\)

\(\theta = 45^{\circ}\)

A launch angle of 45º is a critical point of (3). If we know that \(g< 0\) and \(\theta = 45^{\circ}\) in (5), then \(\Delta x'' < 0\), which means that critical point determined above leads to a maximum distance. Then, the student must change the launch angle from 20º to 45º to maximize the horizontal distance.

Answer:

a)   x = ⅔ d , b) the charge must be negative, c) Q

Explanation:

a) In this exercise the force is electric between the charges, we are asked that the system of the three charges is in equilibrium, we use Newton's second law. Balance is on the third load that we are placing

         ∑ F = 0

        -F₁₂ + F₂₃ = 0

         F₁₂ = F₂₃

let's replace the values

        k Q Q / r₁₂² = k Q 4Q / r₂₃²

            Q² / r₁₂² = 4 Q² / r₂₃²

suppose charge 3 is placed at point x

        r₁₂ = x

        r₂₃ = d-x

we substitute

             1 / x² = 4 / (d-x) 2

             1 / x = 2 / (d-x)

             x = 2 (x-d)

             x = 2x -2d

            3x = 2d

              x = ⅔ d

b) The sign of the charge must be negative, to have an attractive charge on the two initial charges

c)  Q

Answer:The SI system is based on the number 10 as well as multiples and products of 10. This makes it much easier to use, and so it has been the accepted system in scientific and technical applications. The English system is more complicated as relationships between units of the same quantity aren't uniform.

Explanation:

Answer:

The metric system is an internationally agreed decimal system of measurement while The International System of Units (SI) is the official system of measurement in almost every country in the world

Answer:

Yes

Explanation:

Yes, we can control the motion.

Motion can be controlled by applying friction which is a force that opposes the motion. For example, if a car is in motion, brakes are applied to stop the motion of the car, this is due to the use of force of friction to convert that kinetic energy into heat.

Hence, the correct answer is "yes".

No. The potential of a non-uniform charged sphere cannot be the same as that of a point charge.

The potential at any point in space is determined by the distribution of charge within the system, and a non-uniform charged sphere has a different charge distribution than a point charge.

A point charge has all of its charges concentrated at a single point, while a non-uniform charged sphere has charge distributed throughout its volume.

As a result, the electric field and potential will be different for these two systems, even if they have the same total charge. Therefore, the potential of a non-uniform charged sphere cannot be the same as that of a point charge.

More on potential and point charge can be found here: https://brainly.com/question/28851859

#SPJ1

True, Food manufacturers create fats by adding hydrogen to fats.

Hydrogenation is used in the oil industry in making trans fats or margarine by increasing the melting point through reducing the carbon-to-carbon double bonds..

During hydrogenation, unsaturated fats undergo a chemical reaction in the presence of hydrogen gas and a catalyst, typically nickel.

The process involves the addition of hydrogen atoms to the carbon double bonds in the fatty acid molecules, resulting in the conversion of some of the double bonds into single bonds.

This reduces the number of unsaturated bonds in the fat, making it more saturated.

So we can conclude that the statement is true.

Learn more about Hydrogenation here: https://brainly.com/question/13910028

#SPJ1

The galaxies that I would most likely find at the center of a large cluster of galaxies is option (b) a giant elliptical galaxy.

It is generally accepted that galaxy mergers are what create giant elliptical galaxies. It is also possible for regular elliptical galaxies to form in this way or through the gravitational collapse of an interstellar gas cloud.

Therefore, The majority of elliptical galaxies are made up of older, low-mass stars with sparse interstellar space and little star formation, and they typically have a lot of globular clusters all around them.

Learn more about elliptical galaxy from

https://brainly.com/question/24985948
#SPJ1

The freqency of the wave of wavelength 3.6 m is 5.56 Hz

The frequency of a wave is the ratio of the speed and its wavelength.

To calculate the frequency of the wave, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute thse values into equation 1 and solve for f

Hence, the freqency of the eave is 5.56 Hz

Learn more about frequency here: https://brainly.com/question/15342679

#SPJ1

i think

Answer:

physics. The ______ is a systematic way to observe, experiment, and analyze the world. scientific method. The valid digits in a measurement are called the. significant digits.

Explanation:

truth'

Answer:

Energy is flowing from the air and the table to the ice cream, which causes the ice cream to melt

For the dish of ice cream, energy is flowing from the air and the table to the ice cream, which causes the ice cream to melt.

The energy transfer is the process of conversation of the one of energy into the another form. This energy can be transfer from heat energy to mechanical energy or from light energy to electric energy.

Here, the dish of ice cream was left out on a table and is beginning to melt.

As the dish of ice cream is melt, then there is the endothermic process (the process in which the energy is released in the form of light or heat) take place.

As the endothermic process is the process in which the energy is released in the form of light or heat.

Thus, in order to melt the dish of ice cream, it need to absorb the energy by the ice cream to melt. This energy is transferred from the surrounding to the ice cream.

Thus, for the dish of ice cream, energy is flowing from the air and the table to the ice cream, which causes the ice cream to melt. Option D is the correct option.

Learn more about the energy transfer here;

https://brainly.com/question/735974

The circuit is a series circuit since all of the components are connected in a single path.

The current that flows through each component is the same, and the voltage across each component is proportional to its resistance.

In this circuit, there are two resistors, R1 and R2, and a battery with an electromotive force (EMF) of E.

The voltage across each resistor can be determined using Ohm's law, which states that

V = IR,

where V is the voltage

           I is the current

           R is the resistance.
The total resistance of the circuit can be calculated using the formula:

R = R1 + R2.

Using Ohm's law, the current in the circuit can be found by dividing the voltage by the total resistance:

I = E / R
The voltage across each resistor can be found using

V1 = IR1 and V2 = IR2.

The total voltage of the circuit is equal to the sum of the voltages across each resistor

V = V1 + V2

Substituting the equations for V1 and V2 into the equation for V, we get;

V = I(R1 + R2)
Thus, we can use the following equations to solve for the different variables in the circuit:
R = R1 + R2
I = E / R
V1 = IR1
V2 = IR2
V = I(R1 + R2)
Using these equations, we can calculate the current, voltage, and power of the circuit.

For such more questions on circuit

https://brainly.com/question/1176850

#SPJ8