A 3.0 cm-tall object is 15 cm in front of a diverging lens that has a -20 cm focal length. Calculate the image position and the image height.

Newton's optics experiment observation and intervention. In order to make his observations, Newton used the theory of light passing through prisms and the rays that were sent by them. It was revealed that light has a variety of properties and features.

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I added an image of the answers/ Hope this helps! good luck on it.

Answer:

B

Explanation:

Cause I think it is

Answer:

At the topmost point where the velocity has only horizontal component whereas the acceleration is vertical.

Explanation:

There is only a horizontal component of velocity at the ap3x of the projectile, and acceleration is vertically downwards owing to gravitation, therefore velocity and acceleration are perpendicular to one another.

Answer:

60 - 45 = A. 15

Explanation:

Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.

A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.

The image that follows illustrates how an object appears when viewed via a plane mirror.

Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

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In order to increase the gain of a common emitter amplifier, we have to reduce the output impedance. This statement is false.

To increase the gain of a common emitter amplifier, it is more common to focus on increasing the input impedance and/or the transconductance of the transistor, rather than specifically reducing the output impedance.

The NMOS transistor certainly operates in the saturation region.

False. The operating region of an NMOS transistor depends on the voltages applied to its terminals. The NMOS transistor can operate in different regions, including the cutoff, triode, and saturation regions. The specific region of operation depends on the voltages applied to the gate, source, and drain terminals of the transistor.

It's important to note that the answers provided above are based on the given options, but the questions could be more accurately answered with additional context or clarification.

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The difference in time between the sound waves being detected at the other end of the plank and the sound being heard through the air will be 0.09 sec.

A sound wave is produced when a medium begins to vibrate. When an entity vibrates, a pressure wave is formed, which causes sound.

Given data;

The speed of sound in wood,u= 3300 m/s

The speed of sound in air,v=330 m/sec

long plank of wood, L=33 m

The time period in the air was found as;

T₁ = 33 m / 330 m/sec

T₁= 0.1 sec

The time period in wood ;

T₂= 33 m / 3300 m/sec

T₂=0.01 sec

T = T₁ - T₂

T=0.1-0.01

T=0.09 sec

Hence, the difference in time between the sound waves being detected at the other end of the plank and the sound being heard through the air will be 0.09 sec.

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Answer:

yo ni siquiera he leido Organizar Notes y quisiera responderte pero el sistema no me deja escribir bien se esta alocando

Explanation:

The amount of work (in Newton meters) that Helen did to get her car to the gas station is 4000 Newton meters

Work done is defined as illustrated by the formula given below:

Work done = force (F) × distance (d)

From the question given above, we were told that:

The work done by Helen can be obtained as shown below:

Work done = force (F) × distance (d)

Work done = 40 × 100

Work done = 4000 Newton meters

Thus, it is evident that the work done is 4000 Newton meters

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In order to find the time it takes, first let's convert the distance from miles per hour to feet per second: calculate the acceleration using Torricelli's equation

Then, let's :

Now, we calculate the time with the formula below:

Therefore the time required is 1.7 seconds.

Using Ohm's Law, we can find the current in the wire:
I = V/R = 50.0 V / 8.00 Ω = 6.25 A, So the current in the wire is 6.25 A.

To find the power rating of the heater, we can use the formula:
P = VI, where P is the power, V is the potential difference, and I is the current. Plugging in the values, we get:
P = 50.0 V x 6.25 A = 312.5 W
So the power rating of the heater is 312.5 W.Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. This relationship is often represented mathematically as I = V/R, where I is the current through the conductor, V is the voltage applied across the conductor, and R is the resistance of the conductor. In simpler terms, Ohm's law describes the behavior of a resistor or conductor in an electrical circuit, where the current flowing through the circuit is directly proportional to the voltage applied across it, and inversely proportional to its resistance. Ohm's law is an important concept in electrical engineering and is used to design and analyze electrical circuits, as well as to calculate the power dissipation and efficiency of electrical component

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Answer:

Density= 2.78 g/cm³

Relative density=2.8

Explanation:

To calculate the density of the cube we have to use the formula ρ=mass/volume

ρ stands for density.

So now we don't have the volume of the cube and to find the volume of the cube we have to use the formula a³

3³= 9 cm³

Now plug in the values. ρ= 25 g/9 cm³

ρ= 2.78 g/cm³

To find the relative density, we have to use the formula ρsample/ρH20

The sample means the density of the substance earlier. We do not know the density of water but it is constant at 997 kg/m³.

Now we have to make the units same so you change the unit of the density of cube to kg/m³

So, 25/1000= 0.025 kg

9/100×100×100 (because cm³ which means that there should be 3 meters to change the unit and to conver cm to meter we need to divide by 100 so 9cm/100, 9cm²/100×100, 9cm³/100×100×100)

=0.000009 m³

The new density= 0.025 kg/ 0.000009 m³

= 2777.78 kg/m³

Now plug the values into the formula:

relative density= 2.777.78 kg/m³ / 997 kg/m³

=2.8

There is no unit since kg/m³ and kg/m³ cancels

Answer:

a)

Weight in Air = 0.3N

Weight in Water = 0.25N

Weight in Liquid = 0.24N.

Upthrust /Buoyant Force = Weight in Air – Weight in Fluid(Water in this case)

= 0.3 – 0.25

= 0.5N.

b) R.D of Body = Density of Body/Density of Standard Fluid(Water).

There's a Derived Formula for RD.

I'm gonna Apply it here.

Ask me for the derivation in the Comment section if you need it.

RD = α/ρ = (Weight in Air) / (Upthrust Force)

Where

α = density of the Body(or reference substance)

ρ = density of standard fluid (water)

= 0.3/0.05 = 6.

c) RD of Liquid = (Density of Liquid) /(Density of standard Fluid(water)

Or we just go by that formula

RD of Liquid = Weight in Air/Upthrust(In Liquid)

We'll be using the Upthrust in that Liquid now.

= 0.3 – 0.24 = 0.06

RD = 0.3/0.06 = 5.

Here, if take it that you mean "perfectly smooth" to mean that there is no friction. If that is the case, then the box begins to move whenever there is a net horizontal force acting on it. (D) It goes without saying that the force increases as the box accelerates.

F = ma

Where, F is the force on the box and m is the mass of the box and a is the acceleration.

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Answer:

a = 5 m / s²   and    x = 562.5 m

Explanation:

Let's apply the kinematics relations

          v = v₀ + at

          v² = v₀² + 2a x

In this case, as the car stops, its final speed is zero (v = 0) and the acceleration must be opposite to the speed, that is, negative

           0 = v₀ - a t

           a = v₀ / t

let's calculate

           a = 75/15

           a = 5 m / s²

let's look for the distance

           0 = v₀² - 2a x

           x = v₀² / 2a

let's calculate

           x = \(\frac{75^2}{2 \ 5 }\)

           x = 562.5 m

Answer:

wave length is 1.2m

Explanation:

since formula of wave length is v/f

v(speed of sound in air at stp is 300ms^-1)

f(frequency 250hertz)

then wave length is 300÷250 which give 1.2m

Sound waves with a constant frequency of 250 hertz are traveling through air at stp. what is the wavelength of the sound waves is 1.32 m.

Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform. There are two types of the wave longitudinal wave and transverse wave. Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave. Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave.

speed of the wave,

c = νλ

330 m/s = 250λ

λ = 330/250 = 1.32 m

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The magnitude of the torque applied to the drum by the pull cord is approximately 4.89 Nm.

Torque is a measure of the twisting force that causes rotation. It is a vector quantity that depends on the force applied, the distance between the force and the pivot point, and the angle between the force and the lever arm (the perpendicular distance between the force and the pivot point). To find the magnitude of torque applied to the drum, you can use the formula: torque = force x radius. In this case, the force is 76 N and the radius is 6.43 cm (which needs to be converted to meters).
So first, convert the radius to meters: 6.43 cm = 0.0643 m.
Now, calculate the torque: torque = 76 N x 0.0643 m = 4.8868 Nm.
Therefore, the magnitude of the torque applied to the drum by the pull cord is approximately 4.89 Nm.

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A sound is moving through the atmosphere at a velocity of 343 ms-1. The sound wave has a wavelength of 0.1 cm.

Longitudinal waves are what make up sound. Compressions and rarefactions are also present in longitudinal waves when they pass through any given medium. When particles travel in close proximity to one another, compression occurs, creating areas of intense pressure.

As with all waves, the relationship between the speed of sound (vw), its frequency (f), and its wavelength () is provided by vw=f. vw=(331m/s)T273K describes how the sound's velocity in the air relates to air temperature T. For any and all frequencies and wavelengths, vw is constant.

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The wavelength of a 650.00 Hz sound in air at room temperature and pressure, where the velocity of sound is 344 m/s, is approximately 0.529 m.

Sound waves travel through a medium by creating compressions and rarefactions. The wavelength of a sound wave is the distance between two consecutive points that are in phase, such as two compressions or two rarefactions. To calculate the wavelength, we can use the formula: wavelength = velocity of sound / frequency.

In this case, the frequency of the sound is 650.00 Hz, and the velocity of sound in air at room temperature and pressure is 344 m/s. Plugging these values into the formula, we get: wavelength = 344 m/s / 650.00 Hz = 0.529 m.

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Answer: By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life.

Explanation: Plzz mark me as brainliest !!

0.840s is the half-life of lithium-8 if the decay constant is 0.825/s. The decay constant is unique to each radioactive substance and measures the speed of radioactive decay. Therefore, the correct answer is option D.

The half-life of lithium-8 can be calculated using the formula:

\(t1/2 = ln(2) / \lambda\)

Where t1/2 is the half-life, ln is the natural logarithm, and λ is the decay constant. Substituting the given decay constant of 0.825/s into the formula:

t1/2 = ln(2) / 0.825/s

t1/2 ≈ 0.840s

Therefore, the half-life of lithium-8 is approximately 0.840s. The formula for half-life is a fundamental concept in nuclear physics, which determines the time required for a radioactive substance to decay by half of its original quantity. The decay constant, which is specific to each radioactive substance, measures the rate at which radioactive decay occurs.

The higher the decay constant, the shorter the half-life, indicating that the substance is more unstable and decays faster. In this case, the decay constant of lithium-8 is 0.825/s, indicating that it is relatively unstable and has a short half-life of approximately 0.840s.

In summary, the half-life of lithium-8 is approximately 0.840s with a decay constant of 0.825/s. Therefore, the correct answer is option D.

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Answer:

The velocity of the mass after 10.0 seconds is 50.0 m/s.

Explanation:

Explanation: We can use the formula v = (F t)/m to calculate the velocity of the mass. Given that the force applied is 10.0 N, the mass is 2.00 kg, and the time elapsed is 10.0 s, we can substitute these values into the formula to get:

v = (10.0 N * 10.0 s) / 2.00 kg = 50.0 m/s

Therefore, the velocity of the mass after 10.0 seconds is 50.0 m/s.

It would take approximately 4.77 grams (force) to rupture a 1.06 denier silk fiber when dry at its maximum tenacity value.

To calculate the force needed to rupture a 1.06 denier silk fiber at its maximum tenacity value when dry, you can follow these steps:
1. Convert the denier (den) to grams per meter (g/m): 1.06 den is equal to 1.06 grams per 9,000 meters (1 den = 1 g/9,000 m).
2. Calculate the length of the fiber in meters: 1.06 g / (1.06 g/9,000m) = 9,000 meters.
3. Determine the maximum tenacity value of silk fiber, which is typically around 4-5 grams/force per denier (g/den) when dry. Let's assume a maximum tenacity value of 4.5 g/den.
4. Calculate the force required to rupture the fiber: 1.06 den × 4.5 g/den = 4.77 grams (force).
Therefore, it would take approximately 4.77 grams (force) to rupture a 1.06 denier silk fiber when dry at its maximum tenacity value.

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The iron cube will have the higher final temperature if both cubes have the same mass and are initially at the same temperature.

What are the characteristics of iron?

1. Iron is a malleable and ductile metal, meaning it can be bent and shaped without breaking.

2. It has a high melting point, making it useful in a variety of applications.

3. Iron is relatively abundant and inexpensive, making it an ideal material for a variety of construction and manufacturing uses.

4. Iron is highly reactive and can corrode easily, so it must be protected with a coating or alloying elements like chromium or nickel to prevent rusting.

5. Iron is a strong and durable metal, making it ideal for structural applications.

The equation for the final temperature is, Delta*T = Q/(c.m) The specific heat, c of aluminum is greater than that of iron. Iron has a higher heat capacity than aluminum, which means that it takes more heat to raise the temperature of a given mass of iron by a certain amount compared to aluminum. When the same amount of heat Q is transferred to both the iron and aluminum cubes, the iron cube will absorb more heat due to its higher heat capacity, resulting in a higher final temperature for the iron cube.

Therefore,  iron cube is the correct answer.

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The average acceleration in multiples of g (9.80 m/s²) is 14.13.

Initial speed = 0 km/s

Final speed = 7.90 km/s

Time taken = 57.0 s

Firstly, we need to convert km/s to m/s:1 km/s = 1000 m/s

Therefore, Final speed = 7.90 km/s = 7900 m/s

Initial speed = 0 km/s = 0 m/s,

The formula to calculate average acceleration is given by :a = (v - u)/t

Where, a is the average acceleration

v is the final velocity

u is the initial velocity

t is the time taken

We need to put all the values in the above formula to get the answer:

a = (v - u)/ta = (7900 - 0)/57.0a = 138.60 m/s²

Therefore, the average acceleration in m/s² is 138.60 m/s².

To find the average acceleration in multiples of g (9.80 m/s²),

we will divide the average acceleration by the acceleration due to gravity.

a = 138.60 m/s²a(g) = a/9.80 m/s²a(g) = 138.60/9.80a(g) = 14.13

Therefore, the average acceleration in multiples of g (9.80 m/s²) is 14.13.

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The amount of charge that passes per unit of time is called current. Current is a measure of the flow of electric charge through a circuit or conductor.

It is defined as the amount of charge passing through a given point per unit time, typically measured in amperes (A). Electric current is caused by the movement of charged particles, such as electrons, in a conductor under the influence of an electric field. Current can be either direct current (DC), which flows in one direction, or alternating current (AC), which periodically reverses direction. The flow of current is essential for the operation of many electrical devices, including lights, motors, and electronic devices.

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Answer:

See below

Explanation:

The force applied and the length of the arm

The magnitude of an applied torque depend on force vector, 'θ' is the angle between r and F, and the distance vector.

What is torque?

The force that can cause an object to rotate along an axis is measured as torque. Similar to how force accelerates an item in linear kinematics, torque accelerates an object in an angular direction. A vector quantity is a torque.

Torque is defined as Γ=r×F=rFsin(θ). In other words, torque is the cross product of the force vector, where 'θ' is the angle between r and F, and the distance vector (the distance between the pivot point and the place where force is applied).

The magnitude of an applied torque depend on force vector, 'θ' is the angle between r and F, and the distance vector.

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Answer:

sandstone and mudstone

Explanation:

The frequency of the fundamental can be calculated using the formula f = (1/2L) * sqrt(T/m), where L is the length of the string, T is the tension, and m is the mass per unit length of the string.

Plugging in the values, we get f = (1/2*0.9) * sqrt(540/(3.6/0.9)) = 196.1 Hz (rounded to two significant figures).
The frequency of the first overtone can be calculated as f1 = 2f, so f1 = 392.2 Hz.
The frequency of the second overtone can be calculated as f2 = 3f, so f2 = 588.3 Hz.
Therefore, the frequencies of the fundamental and first two overtones are 196.1 Hz, 392.2 Hz, and 588.3 Hz, respectively, when rounded to two significant figures and listed in ascending order.

To find the frequencies of the fundamental and first two overtones for a guitar string with a mass of 3.6 g, length of 90 cm, distance from the bridge to the support post (l) of 62 cm, and tension of 540 N, you can follow these steps:
Step 1: Convert mass and length to appropriate units.
Mass (m) = 3.6 g = 0.0036 kg
Length (L) = 90 cm = 0.9 m
Step 2: Calculate the linear mass density (µ) of the string.
µ = mass/length = 0.0036 kg / 0.9 m = 0.004 kg/m
Step 3: Calculate the speed of the wave (v) on the string using the tension (T) and linear mass density.
v = sqrt(T/µ) = sqrt(540 N / 0.004 kg/m) ≈ 164.32 m/s
Step 4: Calculate the frequencies of the fundamental and first two overtones.
Fundamental frequency (f1): f1 = v / (2L) = 164.32 m/s / (2 × 0.9 m) ≈ 91.29 Hz
First overtone (f2): f2 = 2 × f1 ≈ 182.58 Hz
Second overtone (f3): f3 = 3 × f1 ≈ 273.87 Hz
So, the frequencies of the fundamental and first two overtones are approximately 91.29 Hz, 182.58 Hz, and 273.87 Hz. Using two significant figures, the answer is 91 Hz, 180 Hz, and 270 Hz.

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The magnitude of the dipole's angular velocity (ωmax) when it is pointing along the y-axis can be determined using the given information.

To find the magnitude of the dipole's angular velocity (ωmax) when it is pointing along the y-axis, we need to consider the properties of a dipole and its rotational motion.

A dipole consists of two opposite charges separated by a distance, forming a vector pointing from the negative charge to the positive charge. The dipole moment (p) is defined as the product of the charge magnitude (q) and the separation distance (d) between the charges: p = q * d.

The angular velocity (ω) of a dipole rotating about its axis is related to its dipole moment and moment of inertia (I) by the equation ω = p / I.

When the dipole is pointing along the y-axis, it implies that the dipole moment vector is in the y-direction. Therefore, the magnitude of the dipole moment can be expressed as p = p_y, where p_y represents the component of the dipole moment along the y-axis.

The moment of inertia for a dipole rotating about its axis can be determined based on its shape and mass distribution. Without specific details or values provided in the problem introduction, it is not possible to determine the exact moment of inertia or provide a specific expression for ωmax in terms of the given quantities.

Therefore, to calculate the magnitude of the dipole's angular velocity (ωmax) when it is pointing along the y-axis, we would need additional information, such as the specific shape and mass distribution of the dipole, in order to determine the moment of inertia.

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