Measure the focal distance f, the distance of the object arrow from the mirror d 0
​
, and the distance of its image from the mirror d 1
​
. Record your results here f=126.81 ∘
do=0.29 m
di=0.17 m
​
Question 2-2: Are your results consistent with the mirror equation? Explain. If not, discuss what you think are the reasons for the disagreement. QUESTION 2-3: Based on your observations, is the image created by a concave mirror real or virtual? Explain. QUESTION 2-4: Qualitatively, is the magnification and orientation of the image consistent with the magnification equation? Explain.

Answer:

the answer is b.

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Answer:

a. Light bulb - electrical to light

b. Firework - chemical to light / thermal / sound

c. Flute - kinetic to sound

d. Leaf-  solar to chemical

The net force on particle q1 to the right is 3.6 x 10⁻⁴ N.

These connections are summarized by Newton's second law of motion. Net Force = Mass Acceleration, or F = m a, can be derived from the following equation for acceleration to solve for net force.

We must get the vector sum of the forces resulting from q2 and q3 in order to determine the net force acting on particle q1:

F_net = F_1,2 + F_1,3

The force between two point charges q1 and q2, which are separated by a distance r, can be calculated using Coulomb's Law as follows:

F = k×(q1 * q2) / r²

Using Coulomb's Law, the force on q1 due to q2 is:

F_1,2 = k * (q1 * q2) / r²

where q1 = 2 x 10⁻⁶ C, q2 = -4 x 10⁻⁶ C, and r = 0.10 m (distance between q1 and q2).

Substituting the values, we get:

F_1,2 = (9.0 x 10⁹ N m² / C²) * (2 x 10⁻⁶ C * -4 x 10⁻⁶₈ C) / (0.10 m)²

F_1,2 = -7.2 x 10⁻⁴ N (repulsive force)

Using Coulomb's Law, the force on q1 due to q3 is:

F_1,3 = k * (q1 * q3) / r²

where q1 = 2 x 10⁻⁶ C, q3 = 3 x 10⁻⁶ C, and r = 0.05 m (distance between q1 and q3).

Substituting the values, we get:

F_1,3 = (9.0 x 10⁹ N m² / C²) * (2 x 10⁻⁶ C * 3 x 10⁻⁶ C) / (0.05 m)²

F_1,3 = 1.08 x 10⁻³ N (attractive force)

the following is the net force acting on particle q1:

F_net = F_1,2 + F_1,3

F_net = (-7.2 x 10⁻⁴ N) + (1.08 x 10⁻³ N)

F_net = 3.6 x 10⁻⁴ N (to the right)

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The astrometric technique looks for planets with careful measurements of a star's position in the sky.

Astrometry is the method that detects the motion of a star by making precise measurements of its position on the sky. This technique can also be used to identify planets around a star by measuring tiny changes in the star's position as it wobbles around the center of mass of the planetary system. However, the precision required to detect a planet orbiting a star using this technique is extremely difficult to achieve and for this reason only one planet has been discovered by this method, although astrometry has been used to make follow-up observations for planets detected via other methods.

Astrometric observations cannot detect a star's displacement towards or away from Earth, as this does not produce any change in the star's position in the sky. Astrometry can only detect that component of a star's wobble that moves it to a different location in the sky - i.e. perpendicular to the line of sight of the Earth-bound observer.

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So,wavelength of a signal with a frequency of 2.63 × 10^4 Hz is approximately 1.141 × 10^4 meters.

To find the wavelength of a signal, you can use the formula:

Wavelength (λ) = Speed of Light (c) / Frequency (f)

The speed of light is approximately 3.00 × 10^8 meters per second (m/s).

Let's calculate the wavelength using the given frequency of 2.63 × 10^4 Hz:

Wavelength (λ) = (3.00 × 10^8 m/s) / (2.63 × 10^4 Hz)

Performing the division:

λ = 3.00 × 10^8 / 2.63 × 10^4

Simplifying the expression:

λ = 1.141 × 10^4 meters

Therefore, the wavelength of a signal with a frequency of 2.63 × 10^4 Hz is approximately 1.141 × 10^4 meters.

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Answer:

d. distance travelled

Explanation:

answer

Answer:

Explanation:

(4.8 m/s)t = 1/2(2.2 m/s²)t²

2(4.8 m/s)t / (2.2 m/s²) = t²

2(4.8 m/s) / (2.2 m/s²) = t²/t

t = 4.36 s

A.  total time it takes to catch up to friend = 4.36s + 2s = 6.36s    (took her 2 sec to hop on the bike and get going)

B. Distance she travels is the same distance the friend travels in 4.36 s = (4.8 m/s)(4.36 s) = 1/2(2.2 m/s²)(4.36 s)² = 20.9 m

To determine the diameter of the cylindrical rod that can withstand a load of 650 N, we need to consider the yield strength of the material and the applied load. the diameter of the rod is approximately 11.62 mm.

By using the formula for stress (force divided by area) and rearranging it to solve for the diameter, we can find the required diameter of the rod.

The stress experienced by the rod can be calculated using the formula:

Stress = Force / Area

Given that the yield strength of the steel is 310 MPa, we can set up the equation:

310 MPa = 650 N / (π * (diameter/2)^2)

We can rearrange the equation to solve for the diameter:

diameter = √(650 N / (310 MPa * π)) * 2

Substituting the given values, we find:

diameter ≈ √(650 / (310 * 10^6 * π)) * 2 ≈ 11.62 mm

Therefore, the required diameter of the rod to withstand the load is approximately 11.62 mm.

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Answer:

Install sound absorbers such as foam or acoustical panels

Explanation:

They could install some sound absorbers such as foam or acoustical panels in the walls, floors, and ceiling of the conference room.

Explanation:

The relationship between harmonics and resonance frequency in a piano is that the harmonics of the vibrating strings align with the resonance frequencies of the piano's soundboard and other components. This alignment allows the harmonics to be amplified and sustained, resulting in the characteristic and rich sound produced by the instrument.

Answer:

Things that electricity cant flow through are called insulators.

Answer:

1. Genetic diversity are the differences in DNA among individuals within a species or population while ecosystem diversity is the number or variety of ecosystems within a particular area.

2. Genetic diversity is the genetic material of microorganisms,  plants and animals contains information that  determines the characteristics of all species and  individuals that make up the diversity of the living  world while the ecosystem diversity is the enormous range of terrestrial and  aquatic environments on earth has been classified into a number of ecosystems.

You want us to answer all of those or-??

Answer:

the answer is A

Explanation:

pH is a measure of how acidic/basic water

Infrared waves are ineffective for treating cancer because they do not transfer enough energy to destroy cancer cells.

One of the uses of a high frequency wave is in the treatment of cancer. These high frequency waves transfer enough energy to destroy the cancer cells.

E = hf

where;

Infrareds have low frequency, and hence low energy.

Thus, infrared waves are ineffective for treating cancer because they do not transfer enough energy to destroy cancer cells.

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Answer:

01.

Explanation:

Half the acceleration. Its heavier and moves slower. If it moved the same acceleration, the forces would also have to be doubled since the mass was.

The first step that  Enrique must take in order to calculate the tangential speed of the satellite is to convert the period from days to seconds.

We know that the SI unit of speed is meter per second and now, we with to obtain the tangential speed of the satellite.

Since the period is given in days, the first step is to convert the period from days to seconds.

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Answer:

convert the orbital period to seconds

Explanation:

I got it right on edge 2022

Answer:

Explanation:

Momentum = m * v  = .12 * 150 = 18 kg m/s

The types of materials suitable for load-bearing architecture include: a) Adobe d) Brick

Adobe and brick are both traditional materials that have been used for load-bearing structures for centuries. They possess qualities that make them suitable for withstanding the weight and forces exerted on a building.

Adobe is a mixture of clay, sand, and straw that is formed into bricks and then sun-dried. It is known for its excellent thermal insulation properties and durability. The composition of adobe allows it to bear significant loads, making it suitable for load-bearing walls in regions with suitable climate conditions.

Brick, on the other hand, is made from fired clay or clay mixed with other materials. It is widely used in construction due to its strength, durability, and load-bearing capabilities. Bricks can withstand compressive forces and provide structural stability to buildings.

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Answer: Glare appears on a computer screen when light from the surroundings reflects off of the screen's surface. Some computer screens have a special coating to reduce glare. Which best explains how the coating works? The surface of the coating is rough, so light that shines on it gets scattered in many directions.

HOPE THIS HELPS IF NOT SORRY

The surface of the coating is rough, so light that shines on it gets scattered in many directions best explains how the coating works.

A coating is a protective layer that is put to the surface of an item, The coating can be applied for ornament and jewelry.

Paints are a type of coating that protect the surface of the material and also used for its decoration  as well as also used in corrosion prevention.

When any light is to fall on any rough surface in that condition, the light get scattered in many directions.

The surface of the coating is rough, so light that shines on it gets scattered in many directions best explains how the coating works.

Hence, option B is correct.

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Answer:

One of the most common is to use pH strips.

Explanation:

A) 4π radians did the carousel rotate through.

B) v=rω, v =2*20 = 40 m/s is the tangential velocity of the carousel at a point 2 m from the center of the carousel.

C) α =ω²r = 20²× 5 = 2000 rad/s² is the angular acceleration of the carousel during this time.

D)  the tangential acceleration of the carousel at a point on the outside of the platform is zero cause a(t) = r dω/dt change in angular velocity is zero after it reaches 20 rad/s.

A carousel, also known as a merry-go-round (international), roundabout (British English), or hurdy-gurdy (an archaic phrase in Australian English), is a type of amusement attraction that consists of a spinning circular platform with seats for passengers. Traditional "seats" are rows of wooden horses or other animals set on poles, many of which are moved up and down by gears to mimic galloping to the tune of looping circus music. carousel rotates with a particular velocity.

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The value of the expression \(E^2 − (pc)^2\) for this proton is: \(881879 MeV^2.\)

To find the value of the expression \(E^2 − (pc)^2\) for this proton, follow these steps:

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Answer:

2264 N

Explanation:

Because the apparent weight of an object when it is submerged in water is equal to its actual weight minus the weight of the volume of water that it displaces.

The weight of the object is 1400 kg x 9.81 m/s² = 13 774 N.

The volume of the box is 2.00 m x 3.00 m x 0.200 m = 1.20 m³

The weight of the water displaced is 1.20 m³ x 1000 kg/m³ x 9.81 m/s² = 11 510 N

Therefore, the apparent weight of the box when submerged in water is 13 774 N - 11 510 N = 2264 N.

Answer:

To calculate the amount of Zn that can be deposited at the cathode in the electrolysis of molten ZnCl2, we need to use Faraday's law of electrolysis, which states that the amount of substance deposited at an electrode is proportional to the amount of charge passed through the cell.

The equation for Faraday's law is:

moles of substance = (electric charge passed / Faraday's constant)

where the Faraday's constant is the charge carried by one mole of electrons and is equal to 96500 C/mol.

Now, we can calculate the amount of Zn that can be deposited using the following steps:

Calculate the electric charge passed in one hour:

Electric charge = current × time

Electric charge = 0.01 A × 3600 s = 36 C

Calculate the number of moles of Zn that can be deposited:

moles of Zn = (electric charge passed / Faraday's constant)

moles of Zn = (36 C / 96500 C/mol) = 0.000373 moles of Zn

Calculate the mass of Zn deposited:

mass of Zn = moles of Zn × molar mass of Zn

The molar mass of Zn is 65.38 g/mol

mass of Zn = 0.000373 moles of Zn × 65.38 g/mol = 0.0244 g

Therefore, the amount of Zn that can be deposited at the cathode by the passage of 0.01 ampere for one hour is approximately 0.0244 grams.

Assuming the speed of the wave is taken as the speed of sound wave in air that is 340 m/s. The wavenumber for 262 Hz is 0.77 m⁻¹ and that for 294 Hz is 0.86 m⁻¹ .

The wave number of a wave is the number of wavelengths passing through unit length. It is the inverse of wavelength.

Wave number is directly proportional to the frequency.

The relation between frequency and wave number is written as:

wave number = ν/v

where v is the speed of the wave and ν is the frequency.

The wave number of the wave with the frequency of 330 Hz is then,

330 Hz/ 340 m/s = 0.97  m⁻¹

and for the remaining frequencies:

349 Hz /340 m/s =  1.052  m⁻¹

for 392 Hz,

392 Hz/340 m/s = 1.15  m⁻¹

For 440 Hz,

440 Hz/340 m/s = 1.29  m⁻¹.

for 494 Hz,

494 Hz/340 m/s = 1.45  m⁻¹

and  for 523 Hz,

523 Hz/340 m/s = 1.53  m⁻¹

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Our ability to retain encoded material over time is known as memory.

memory is the cognitive process by which information is encoded, stored, and retrieved. It involves the ability to retain encoded material over time. encoding refers to the process of converting sensory information into a form that can be stored in memory. Once information is encoded, it can be stored in different types of memory systems, such as sensory memory, short-term memory, and long-term memory.

Retention is the ability to maintain and retrieve information from memory over time. It is influenced by various factors, including the strength of the initial encoding, the level of rehearsal or repetition, and the presence of retrieval cues. The stronger the initial encoding of information, the more likely it is to be retained over time.

Therefore, our ability to retain encoded material over time is known as memory.

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The ability to retain encoded material over time is known as memory.

Memory is the ability of the mind to store and recall information and events that have already occurred. Memory is the capacity to acquire, process, store, and retrieve information over time. Encoding, storage, and retrieval are the three processes that makeup memory.

Encoding is the process of converting information into a format that can be stored in memory. Storage is the retention of information in memory. Retrieval is the process of recalling stored information from memory.

Memory is classified into three types: sensory, short-term, and long-term memory. Sensory memory retains information from the senses for a very short period of time.

Short-term memory is also known as working memory, and it can hold information for up to 20-30 seconds. Long-term memory has an indefinite storage capacity and can last from hours to years.

Memory formation is based on the principle of association. This implies that when information is encoded in the brain, it is connected to related information, which makes it easier to retrieve.

The more connections made, the more likely the information will be recalled. Memory can also be influenced by a variety of factors, including attention, emotion, motivation, and practice.

Memory is a complex phenomenon that involves a variety of processes and structures in the brain. While we still have much to learn about how memory works, our current knowledge provides us with insight into how to improve our ability to retain information over time.

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Answer:

P = 5sin(880πt)

Explanation:

We write the pressure in the form P = Asin2πft where A = amplitude of pressure, f = frequency of vibration and t = time.

Now, striking the middle-A tuning fork with a force that produces a maximum pressure of 5 pascals implies A = 5 Pa.

Also, the frequency of vibration is 440 hertz. So, f = 440Hz

Thus, P = Asin2πft

P = 5sin2π(440)t

P = 5sin(880πt)

Answer:

a

Explanation:

Answer:

v_t = \(\frac{2 g \ ( \rho_b - \rho_l ) r^2 }{9 \ \eta }\)

Explanation:

Let's describe the motion and forces on the marble when it falls into the graduated cylinder filled with water.

Initially, the marble in the air falls under the influence of its weight (gravity force), when it enters the water, a friction force appears that INCREASES with SPEED and opposes the movement, this force is called Stokes force.

              Fr = 6π R η v

where η is the viscosity of water

also because of this in a liquid it has an upward thrust, given by Archimedes' law, this thrust is CONSTANT

              B = ρ_l g V_l

in that case the volume of liquid(V_l)  is equal to the volume of the marble.

Constant force of gravity

               W = mg

using the concept of density

                ρ_body = m / V

                W = ρ_body g V_body

we apply Newton's second law

                Fr + B - W = ma

the friction force increases and the other two are constant, so acceleration decreases until reaching zero, at this point the forces are in BALANCE

                Fr + B - W = 0

and the speed remains constant, being called TERMINAL SPEED

                v_t = \(\frac{2 g \ ( \rho_b - \rho_l ) r^2 }{9 \ \eta }\)

from this point on, the displacement is proportional to the time