a 2.4-cm-tall object is 15 cm in front of a converging lens that has a 24 cm focal length.
calculatae the image position
calculate the image height

Answer:

there are 235cm in 2.35m

The photoelectric interaction  describes that A. Involves changes in energy.

The photoelectric effect is the process by which a photoelectron is ejected from an atom or molecule upon absorbing a photon of sufficient energy. The energy of the photon must be equal to or greater than the binding energy of the electron for this to occur. This process is referred to as a photoelectric interaction. Photoelectric interactions typically involve changes in energy.

The energy of the incident photon is converted into kinetic energy for the ejected photoelectron, leaving the atom or molecule in an excited state. In other cases, the photoelectron may interact with other atoms or molecules in the vicinity, resulting in a series of chemical or physical changes. Thus, the best option that describes the photoelectric interaction is that it involves changes in energy. The correct answer is a).

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Answer:

180 because it's half of a full rotation before they shoot the other person.

The FIRST statement on the list is the definition of momentum, so that's the one that must be true.

When two objects A and object B are moving with the same momentum then the product of their velocity and mass will be equal.

The momentum of any object is defined as the product of the mass of the body to the velocity of the body. So if the two bodies are having same momentum it means that the product of their masses and the velocities are equal.

Now suppose the mass and the velocity of the body A is \(M_A\) and \(V_A\) so the momentum of the body will be given by

\(P_A= M_A\times V_A\)

Similarly for body B the mass and the velocity is given as \(M_B\) and \(V_B\) then the momentum of the body B will be given as

\(P_B=M_B\times V_B\)

So now both body A and B are having same momentum then

\(P_A=P_B\)

\(M_A\times V_A=M_B\times V_B\)

Thus when two objects A and object B are moving with the same momentum then the product of their velocity and mass will be equal.

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Sound waves propagate through a material by creating regions of increased and decreased particle density. The given statement is True.

These regions, called compressions and rarefactions, respectively, travel through the material and transfer energy from the source of the sound wave to the listener.

To understand how this works, we need to consider the nature of sound waves. Sound is a form of mechanical energy that travels through a medium, such as air or water. When a sound is produced, it creates a disturbance in the surrounding medium. This disturbance causes the particles of the medium to vibrate, which in turn creates pressure waves that travel through the medium.

that travel through the medium, carrying the energy of the sound wave with them.

As the pressure waves travel through the medium, they cause regions of increased and decreased particle density. In a compression, the particles are pushed together, creating an area of higher density. In a rarefaction, the particles are spread apart, creating an area of lower density.

These alternating regions of increased and decreased particle density travel through the medium, carrying the sound wave with them. The wave itself does not travel through the medium, but rather the energy is transferred through the medium by the movement of the particles.

When the sound wave reaches our ears, it causes our eardrums to vibrate in the same way as the particles of the medium. This vibration is transmitted to the inner ear, where it is converted into nerve impulses that are sent to the brain. The brain then interprets these impulses as sound.

In summary, sound waves propagate through a material by creating regions of increased and decreased particle density that travel through the medium, carrying the energy of the sound wave with them.

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Given data:

* The distance traveled by the air conditioner is,

Solution:

As the air conditioner is falling freely under the action of gravity.

Thus, the acceleration of the air conditioner is equal to the acceleration due to gravity.

As the air conditione ris falling itself from the height.

Thus, the initial velocity of the air conditoner is,

By the kinematics equation, the final velocity of the air conditioner is,

Substituting the known values,

Thus, the final velocity of the air conditioner is 21.69 m/s.

By the kinematics equation, the time taken by the air conditioner,

where t is the time taken by the air conditioner to reach the ground,

Substituting the known values,

Thus, the time taken by the air conditioner ot reach the ground is 2.21 seconds.

No, the skydiver descends continuously. Absolutely, and she is accelerating higher. Absolutely, and she is accelerating downward.

Whenever we look, there is the drag force. In a ball of fluids, we survive (air and water). Any time there is motion in a fluid, such as air, water, or another one, drag forces become present. Drag forces are resistive forces that are present when things move through fluids (a gas or a liquid). Always acting in opposition to fluid flow is the drag force. Aerodynamic drag is the motion of the body in the fluid-like air. Moreover, it is known as hydrodynamic drag if the fluid is water. Fast cars are made and constructed as sleek as possible to reduce the effect of drag force.

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This is an exercise in Rectilinear Uniformly Varied Motion (MRUV) is a type of motion in which an object moves in a straight line and experiences changes in its velocity at a constant rate. In this type of motion, the acceleration of the object remains constant over time.

The distinctive feature of the MRUV is that the velocity of the object changes uniformly, that is, its velocity increases or decreases by a constant amount in each unit of time. If the object experiences a positive acceleration, its velocity increases with time. On the other hand, if the object experiences a negative acceleration, its speed decreases.

In an MRUV, constant acceleration has a direct impact on displacement and the time it takes for the object to reach a certain speed. Also, the direction of the acceleration determines whether the object is accelerating or decelerating relative to its initial motion.

This type of movement is found in various situations of daily life, such as the launch of an object upwards and its subsequent fall, the movement of cars on a road with acceleration or braking, or even the study of bodies in free fall.

Vf = V₀ + a × t

Where:

In this case, the initial velocity (vi) is 1 m/s, the acceleration (a) is -1 m/s^2 (negative because it indicates deceleration), and the time (t) is 4 seconds.

Substituting these values into the formula, we get:

Vf = V₀ + a × t

Vf = 1 m/s + (-1 m/s²) × 4 s

Vf = 1 m/s - 4 m/s

Vf = -3 m/s

Answer:

No, they will not change.

Explanation:

Answer:

2nd one

Explanation:

highest frequency shortest wavelength

Answer:

highest frequency shortest wavelength

The total resistance of the circuit, given that parallel circuit has two resistors at 15 and 40 ohms is 11 ohms.

From the question given, the follow data were obtained:

The total resistance in the circuit can be obtained as follow:

R = (R₁ × R₂) / (R₁ + R₂) => Parallel arrangement

= (15 × 40) / (15 + 40)

= 600 / 55

= 11 ohms

Thus, we can conclude that the total resistance 11 ohms. None of the options are correct.

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The correct answer is D. Tightly packed particles in solids slow down the light  waves; however, sound waves make particles bounce  into each other, so they travel faster in solids.

Explanation:

The experiment compares the speed of light and sound in different mediums (gas, liquid, and solid). The charts show sound travels faster in a solid medium (ice) than in liquids or gases as the speed in ice was 3200 m/s, while in the liquid was 1500 m/s and in the gas was 346 m/s. Thus, sound waves travel faster in solids, which occurs because for sound to travel particles need to bounce or vibrate, which occurs faster in solids as particles are packed together.

On the other hand, the data about light shows this travels faster in gases (air) because in this medium the speed of light is \(2.99 x 10^{8}\), while in a solid the speed is \(1.91 x 10^{8}\). This shows opposite to sound, light travels faster in gases, and therefore, the tightly packed particles of soil only slow down light waves.

Answer:

d is correct on edge 2020

The other pancakes are at various temperatures and Conduction refers to the mode of transfer of thermal energy that arise when the two bodies are in close contact.

The other pancakes are presumably at different temperatures in this scenario. If this is the case, then due to the thermal energy transfer, the pancake with the highest temperature should be the warmest at the bottom. Conduction is the process through which thermal energy is transferred when two bodies are in close proximity to one another.

Thermometers are used to measure the air's temperature. Common thermometers have a glass rod inside of which is a very thin tube. A liquid is delivered to the tube from a reservoir, or "bulb," at the thermometer's base. Sometimes the liquid is reddish alcohol, and other times it is mercury.

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Answer:

A ball moving through the air.

Explanation:

The ball has momentum which is a form of kinetic energy.

I don't know if that is correct, but I hope it helps!!!!

Answer:

4.5 W

Explanation:

Applying,

P = V²/(R₁+R₂).................. Equation 1

Where P = Power, V = Voltage, R₁ and R₂ = values of the two resistor.

From the question,

Given: V = 9.00 V, R₁ = 7.00 Ω, R₂ = 11.00  Ω

Substitute these values into equation 1

P = 9²/(7+11)

P = 81/(18)

P = 4.5 Watt.

Hence the power dessipated by the two resistors is 4.5 watt

The net force between force A and force B is 2000 N in the direction of B.

If A and B are acting in opposite directions, we can find the net force by taking the difference between the magnitudes of the forces as shown below;

In this case, since B is the larger force, we can assign the direction of the net force to be in the direction of B.

The net force of the two forces is calculated as follows;

Net force = B - A

Net force = 5000 N - 3000 N

Net force = 2000 N

Therefore, according to Newton's second law of motion, the direction of the net force of the two forces will be in the larger force which is 5000 N, with a magnitude of 2000 N.

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The complete question is below:

What is net force between A and B  if they are acting in opposite direction to each other?

A = 3000 N

B = 5000 N

73.5 kilojoules are the answer. Since we can compute potential energy, we can convert 250 into 9.8 into 30 into 73500 joules, or u equal to m g h. Consequently, the body's potential energy will be 73500 joules, which is the necessary amount.

This potential energy calculator allows us to calculate the amount of energy that an elevated object has stored inside it. The full name of this effect is gravitational potential energy, and it refers to the energy that an item stores as a result of its height or vertical position.

The great wrecking ball of the crane. The ball's gravitational potential energy depends on both its mass and how high it is elevated. The relationship between gravitational potential energy and an object's mass and height is seen in the following equation:

PE Gravity equals (m, h, and g). The formula is rather simple to comprehend. The height of a non-raised object will be zero, and as a result, it will have no potential energy.

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Answer:

4

Explanation:

The energy of the emitted radiation is 8.8 eV. This means that when the electron transitions from the higher energy level (-1.6 eV) to the lower energy level (-10.4 eV), it releases energy in the form of radiation with an energy of 8.8 eV.

The energy of the emitted radiation can be determined by the difference in energy between the initial and final energy levels of the electron. In this case, the electron jumps from an energy level of -1.6 eV to -10.4 eV.

The energy of the emitted radiation (E) is given by:

E = |initial energy level - final energy level|

E = |-1.6 eV - (-10.4 eV)|

E = |-1.6 eV + 10.4 eV|

E = 8.8 eV

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The current (I3) flowing through resistor three is not provided with the given information. To find the current, we would need the value of the total resistance (RT) which is not provided. Additionally, we would also need the value of R₁ and R₂ to calculate the total resistance.

A resistor is a passive electrical component that resists the flow of electrical current, reducing the current flowing through a circuit. They are often used to limit the current in a circuit, distribute power, or to adjust the voltage level in a circuit. They can be made of various materials such as carbon, metal film, and metal oxide, and are characterized by their resistance value measured in ohms (Ω).

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Answer:

hope that helps uh..☺

Answer:

1298768.6

Explanation:

34.9 x 46 = 1605.4

1605.4 x 809 = 1298768.6

The longitude of the lost ship, assuming solar noon at the location and a time of 12:30 AM at the Prime Meridian, would be approximately 7.5 W.

To determine the longitude, we can use the concept of solar time and the time difference between the location of the lost ship and the Prime Meridian. Solar time is based on the position of the Sun in the sky, and it varies as we move across different longitudes.

Given that it is solar noon at the lost ship's location, it means the Sun is directly overhead at that moment. However, at the Prime Meridian (Greenwich, England), the time is 12:30 AM. The time difference between the two locations is 12 hours and 30 minutes.

Since each hour corresponds to 15 degrees of longitude (360 degrees divided by 24 hours), we can calculate the longitude by dividing the time difference by 1 hour per 15 degrees. In this case, the time difference of 12 hours and 30 minutes corresponds to 7.5 hours, which translates to 7.5 times 15 degrees, resulting in a longitude of 112.5 degrees west or 7.5 W.

As for the second part of the question, if Lake Tahoe is located at 120 degrees west longitude and it is currently solar noon, we can determine the solar time at 15 degrees west longitude. Each degree of longitude corresponds to 4 minutes of time (360 degrees divided by 24 hours), so the time difference between 120 degrees west and 15 degrees west is 105 degrees.

Multiplying 105 degrees by 4 minutes gives us a time difference of 420 minutes. Adding this to the solar noon time (12:00 PM), we get a solar time of 7:00 PM at 15 degrees west longitude. Therefore, the solar time at 15 degrees W would be 7:00 PM.

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Answer:

Aluminium is just on the metal side of the border between metals and metalloids, so it is not considered to be a metalloid

Explanation:

it is a metal

Answer:

Aluminum-(Al) is a metal

If the Prothrombin Time controls 16 seconds rather than expected 12 seconds, the next step should be to run another control or to take another test measure.

Blood clotting time is measured by the prothrombin time (PT) test. Depending on the analytical technique, the normal range for prothrombin time falls between 12 and 13 seconds. A PT of 16 seconds is over the normal range and may point to a liver condition or a blood illness. The next step should be to speak with a doctor who can interpret the findings and, if required, suggest more tests.

A blood test called the prothrombin time (PT) calculates how long it takes for your blood to clot. It assesses the intrinsic and common coagulation pathways, identifying low fibrinogen levels and factor II, V, VII, and X deficiency. PT or pro time are other names for prothrombin time.

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Explanation:

done with the meeting today so I m ready for bed k tai you

Answer:

Explanation:

Dx = 85 +  45·cos 30° = 85 + 45·(√3 / 2) ≈ 124 m

Dy = 45·sin 30° = 45·(1/2) = 22.5 m

D = √ (Dx² + Dy²) = √ (124² + 22.5²) ≈ 126 m

Carrying a load on one's head can indeed be considered as a form of work. Work, in physics, is defined as the transfer of energy from one object to another, resulting in the displacement of the second object in the direction of the applied force.

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