Answer:
The state of being without reliablr access to a sufficient quantity of affordable, nutritious food
a force of 200N is being applied over an area measuring 0.75m^2
Answer:
357KG
Explanation:
how can the period of oscillation and the parallel axis theorem be used to find the omment of inertia of an object about its center of mass
Using the parallel axis theorem, the interactive determines the inertia moment of a semicircle about three different axes.
What's the connection between time and moment of inertia?the length of an actual pendulum The inertia moment can be used to determine T=2ImgL T = 2 I m g L.The distance L between the mass center and the point of rotation.
What do the terms parallel axis theory and parallel axis theorem mean in relation to a lamina's moment of inertia?According to the parallel axis theorem, a body's inertial moment (I) about any axis equals the total of its moments of inertia (ICM) along all of its parallel axes.
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much like a battery these generate electricity from chemical events
The term you are looking for is "chemical battery". Chemical batteries work by converting chemical energy into electrical energy through a series of chemical reactions. These reactions take place within the battery's cells, which are composed of two electrodes and an electrolyte.
When the battery is connected to a circuit, the chemical reactions produce an electrical current that can be used to power devices. Chemical batteries are widely used in many applications, including consumer electronics, electric vehicles, and renewable energy systems. They are a crucial component of our modern technological society, and ongoing research is focused on developing more efficient and sustainable battery technologies to meet growing energy demands.
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how does electricity work?
Answer:Electricity works by getting a bunch of conductor elements together and creating a flow of electron-stealing patterns through them. This flow is called a current. ... Once you can control the direction the electrons are going, you can use them to power or charge anything from a light bulb to your TV to your electric car.
Explanation:trust
arrange 6.002, 6.023, 6.302, 6.020 from least to greatest
WILL MARK BRAINLIEST
Answer:
6.002
6.020
6.023
6.302
Explanation:
The momentum of an object is determined by the object’s mass and velocity. Which object has more momentum?
Answer:
You need to give the options but the formula is p=mv
Explanation:
A cup of coffee with cooling constant k = -0.09 is placed in a room temperature of 18°C. If the coffee is served at 93 °C, how long will it take to reach a drinking temperature of 73 °C?
The time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.
The cooling law is given by:
$$\frac{dQ}{dt}=-k(T-T_0)$$
where Q is the heat in the object, t is the time taken, T is the temperature of the object at time t, T0 is the temperature of the environment and k is a constant known as the cooling constant.
We need to find the time it takes for the coffee to reach a drinking temperature of 73°C given that its initial temperature is 93°C.
Therefore, we need to find the time it takes for the coffee to cool down from 93°C to 73°C when placed in a room temperature of 18°C.
Let’s assume that the heat energy that is lost by the coffee is equal to the heat energy gained by the environment. We can express this as:
dQ = - dQ where dQ is the heat energy gained by the environment.
We can substitute dQ with C(T-T0) where C is the specific heat capacity of the object.
We can rearrange the equation as follows:
$$-\frac{dQ}{dt}=k(T-T_0)$$
$$-\frac{d}{dt}C(T-T_0)=k(T-T_0)$$
$$\frac{d}{dt}T=-k(T-T_0)$$
The differential equation above can be solved using separation of variables as follows:
$$\frac{d}{dt}\ln(T-T_0)=-k$$
$$\ln(T-T_0)=-kt+c_1$$
$$T-T_0=e^{-kt+c_1}$$
$$T=T_0+Ce^{-kt}$$
where C = e^(c1).
We can now use the values given to find the specific value of C which is the temperature difference when t=0, that is, the temperature difference between the initial temperature of the coffee and the room temperature.
$$T=T_0+Ce^{-kt}$$
$$73=18+C\cdot e^{-0.09t}$$
$$55=C\cdot e^{-0.09t}$$
$$C=55e^{0.09t}$$
$$T=18+55e^{0.09t}$$
We can now solve for the value of t when T=93 as follows:
$$93=18+55e^{0.09t}$$
$$e^{0.09t}=\frac{93-18}{55}$$
$$e^{0.09t}=1.3636$$
$$t=\frac{\ln(1.3636)}{0.09}$$
Using a calculator, we can find that the time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.
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The four main causes of crane accidents are contact with power lines, overturns, falls and mechanical failure. Two other errors mentioned in this module that often lead to trouble are:
Two other errors that often lead to trouble are:
Cranes buckling or collapsing.Improper employee trainingDiscussion:
Cranes buckling or collapsing. Cranes have weight limits so that they do not tip over. If the weight limits are exceeded, the crane can tip over or the boom could collapse. A major cause of this is improper crane assembly in which case the crane does not have the proper wood or metal blocking supports to stabilize the load the crane is carrying, the load could move and cause the crane to collapse.Improper employee training. Crane workers must be properly trained in the use of cranes and complete technical courses on the proper operation of cranes. Employers also need to ensure that workers are warned of crane dangers and maintain a safe distance between the crane operation and work performed by other workers.Read more on crane accidents:
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you are standing mid-way between two speakes that at sepraed by ditac 26 m. the speakers are emiting the same monotone sound with a radergaig m. you start waking towards one of the speakers istering to he itesydie two-speaker wave interference. how far do you need to go to expreca the fin point of maximum intensity (constructive interference in front of jo?
You may need to walk a different distance to reach the point of maximum intensity for each frequency, far do you need to go to find point of maximum intensity.
The distance you need to walk to reach the point of maximum intensity (constructive interference) in front of you, you need to consider the principles of wave interference.
When two waves of the same frequency interfere with each other, the resulting wave can be either larger (constructive interference) or smaller (destructive interference) than the individual waves, depending on the phase difference between the waves. If the waves are in phase (i.e., if the crest of one wave coincides with the crest of the other wave), then the resulting wave will be larger than either of the individual waves (constructive interference). If the waves are out of phase (i.e., if the crest of one wave coincides with the trough of the other wave), then the resulting wave will be smaller than either of the individual waves (destructive interference). In the case of two speakers separated by a distance of 26 meters, the point of maximum intensity (constructive interference) will be located halfway between the speakers, or 13 meters from either speaker. If you start walking towards one of the speakers, you will need to walk a total of 13 meters to reach the point of maximum intensity in front of you.
It's important to note that the point of maximum intensity (constructive interference) will only be located 13 meters from each speaker if the speakers are emitting monotone sounds with a single frequency. If the speakers are emitting sounds with multiple frequencies, the point of maximum intensity (constructive interference) will vary for each frequency, and you may need to walk a different distance to reach the point of maximum intensity for each frequency.
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Abdul works at the planetarium where he is responsible for creating a show on stars. His show is entitled "A Star is Bom," and it will explain the
forces that create a star.
Abdul is creating a timeline of a star's life including its beginning, middle, and end. Abdul found a picture to include of the region around a star
before its formation begins. What does it look like?
Answer:
dust cloud
Explanation:
Stars are formed from the accumulation of the dust as well gases in the solar system. The dust and the gases collapses due to the the gravity forces and the stars are formed.
They are formed within the clouds of the dust and gases and are scattered in the galaxies. The stars are formed in a million of years from the dust clouds.
In the context, Abdul have a picture of a dust cloud which looks smoky and dusty which is the initial stage of the stars formation due to the gravity. It is the region of the star that looks like a cloud of dust before the formation of the star.
When parking uphill on a two-way street with no curb, your front wheels should be A. turned left toward the street
B. turned right away from the street
C. parallel with the edge of the road
D. exactly six feet away from the roadway edge
When parking uphill on a two-way street with no curb, your front wheels should be turned to the right, away from the street. Option B
What is parking uphill about?When parking uphill on a two-way street with no curb, it is important to take extra precautions to ensure that the vehicle does not roll backward. In addition to turning the front wheels to the right and engaging the parking brake, it is also a good idea to leave the vehicle in first gear (if it has a manual transmission) or park (if it has an automatic transmission).
It is important to note that in some jurisdictions, there may be specific laws or regulations governing how to park on a street with no curb. It is important to follow any applicable laws or regulations to avoid getting a ticket or facing other legal consequences.
It is also worth noting that parking on a street with no curb can be more challenging than parking on a street with a curb, as there may be less visual cues to guide you. It is important to be extra cautious and to take your time when parking in these situations.
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The
of an object shows how fast the object is moving at a specific
Answer:
Speed is a description of how fast an object moves; velocity is how fast and in what direction it moves. In physics, velocity is speed in a given direction. When we say a car travels at 60 km/h, we are specifying its speed.
determine the volume of one mole of an ideal gas at 25 c and at 0.915 kpa
The volume of one mole of an ideal gas at 25°C and 0.915 kPa is approximately 0.2709 cubic meters.
To solve this problemWe can use the ideal gas law equation:
PV = nRT
Where
P = Pressure (in Pascals)V = Volume (in cubic meters)n = Number of molesR = Ideal gas constant (8.314 J/(mol·K))T = Temperature (in Kelvin)The provided temperature must first be converted from Celsius to Kelvin:
T(K) = T(°C) + 273.15
T(K) = 25 + 273.15
T(K) = 298.15 K
Now, we can rearrange the ideal gas law equation to solve for V:
V = (nRT) / P
The pressure (P) is given to us as 0.915 kPa. The ideal gas law, however, calls for pressure to be expressed in Pascals, thus we must convert it:
P(Pa) = 0.915 kPa * 1000
P(Pa) = 915 Pa
Now, we can substitute the values into the equation:
V = (1 mol * 8.314 J/(mol·K) * 298.15 K) / 915 Pa
Calculating the expression:
V ≈ 0.2709 cubic meters
So, the volume of one mole of an ideal gas at 25°C and 0.915 kPa is approximately 0.2709 cubic meters.
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rotational velocities in the outer part of the galaxy are smaller than would be expected on the basis of observed stars and gas, indicating the presence of dark matter. True or False.
True. Rotational velocities in the outer part of the galaxy are smaller than expected, indicating the presence of dark matter.
Do rotational velocities in the outer part of the galaxy indicate the presence of dark matter? (True/False)True.
The statement is true. Rotational velocities in the outer part of the galaxy are indeed smaller than what would be expected based on the observed stars and gas alone.
This discrepancy indicates the presence of dark matter. Dark matter is an invisible and hypothetical form of matter that does not emit, absorb, or reflect light, making it difficult to directly observe.
However, its presence can be inferred through its gravitational effects on visible matter and its impact on the dynamics of galaxies and galactic rotations.
The gravitational pull of dark matter helps explain why the outer regions of galaxies rotate at higher speeds than can be accounted for by visible matter alone.
Numerous observations, including measurements of galactic rotation curves, provide evidence for the existence of dark matter in the universe.
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A copy machine uses a lens to make an image of a page in the physics textbook to print a copy. When the print is regular size, both the book and its image are 16.0 cm from the lens.
What is the focal length of this lens?
If the lens is moved so that it is 24 cm from the book, what is the distance to the new image?
This new image will be magnified, reduced, or the same size compared to the original book?
How do you know?
Please answer these 4 questions. I need them before 11:59 MST (10/3/22).
The distance travelled by the object in the first 2.5 seconds is 45 m.
The time when the object changes direction is 9.7 seconds.
The distance traveled by the object t₁ and t₂ is 64.8 m.
The velocity of the object at time, t₃ = 16.9 s is -42.25 m/s.
Distance travelled by the object in the first 2.5 secondsThe distance traveled by the object in the first 2.5 seconds is calculated as follows;
d(2.5 s) = vt
where;
v is velocityt is timed(2.5 s) = 18 m/s x 2.5 s
d(2.5 s) = 45 m
Time when the object changes directionUse the formula for average acceleration as shown below.
a = Δv/Δt
where;
Δv is change in velocityΔt is change in timea = (V - 0)/(t₂ - t₁)
2.5 = (18 - 0) / (t₂ - 2.5)
2.5 = (18)/(t₂ - 2.5)
(t₂ - 2.5) = 18/2.5
t₂ - 2.5 = 7.2
t₂ = 7.2 + 2.5
t₂ = 9.7 s
Distance traveled by the object t₁ and t₂The distance traveled by the object t₁ and t₂ is calculated as follows;
d = ¹/₂(t₂ - t₁)(v)
where;
t₂ is final timet₁ is initial timev is velocityd = ¹/₂(9.7 - 2.5)(18)
d = 64.8 m
Velocity of the object at time, t₃ = 16.9 sThe velocity of the object at time, t₃ = 16.9 s is calculated as follows;
v₃ = v₂ + at₃
where;
v₃ is final velocityv₂ is initial velocitya is accelerationv₃ = 0 + (-2.5)(16.9)
v₃ = -42.25 m/s
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what is the frequency of a standing wave with a wave speed of 12 m/s as it travels on a 4.0-m string fixed at both ends?
The frequency of a standing wave with a wave speed of 12 m/s as it travels on a 4.0-m string fixed at both ends is 3.0 Hz.
What Is A Standing Wave?A standing wave is produced by a wave with the same amplitude, frequency, and wavelength moving in the opposite direction with the initial wave. This indicates that the wave appears to stand in one place. Standing waves can only be generated in a medium if there is a boundary that restricts the movement of the wave. Standing waves can be observed in various shapes and sizes, and their frequencies are determined by a variety of factors, including the wave speed and the length of the string. When a standing wave is generated in a string, the points where the wave appears to be fixed are known as nodes, while the points where the string vibrates with the most amplitude are known as antinodes.In this scenario, the wave speed and the length of the string are given.
The wave speed, frequency, and wavelength of a wave are related by the formula v = fλ, where v is the wave speed, f is the frequency, and λ is the wavelength. Since the length of the string is fixed, the wavelength of the standing wave is twice the length of the string. Thus, λ = 2L = 8 m. Plugging in the values for the wave speed and wavelength, the frequency can be calculated as follows:f = v / λ = 12 m/s / 8 m = 1.5 Hz. The frequency of a standing wave with a wave speed of 12 m/s as it travels on a 4.0-m string fixed at both ends is 3 Hz.
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What is the quantity that is the same for all masses?
Answer:
mass: The quantity of matter which a body contains, irrespective of its bulk or volume. It is one of four fundamental properties of matter. It is measured in kilograms in the SI system of measurement.
Explanation:
please give brainliest plz followin science, whereas a hypothesis is a tentative explanation of an observation, a is a broader, well-tested explanation for a natural phenomenon backed by many lines of evidence.
In science, a hypothesis is a tentative explanation of an observation, while a scientific theory is a broader, well-tested explanation for a natural phenomenon backed by multiple lines of evidence.
In the scientific method, a hypothesis is an initial explanation or proposed solution to a specific observation or problem. It is often based on limited evidence or previous knowledge and serves as a starting point for further investigation. A hypothesis is testable and can be supported or refuted through experimentation or further observations. It represents a possible explanation that requires empirical evidence to validate or invalidate its validity.
On the other hand, a scientific theory is a well-established and comprehensive explanation for a natural phenomenon that has been extensively tested and supported by multiple lines of evidence. Unlike a hypothesis, a scientific theory goes beyond a single observation or experiment. It encompasses a broad range of observations, experimental results, and logical reasoning. A scientific theory provides a framework that can explain and predict various related phenomena. It is subject to ongoing scrutiny and refinement, but its validity and acceptance are based on its consistency with empirical evidence and its ability to make accurate predictions.
In summary, while a hypothesis is a tentative explanation of an observation, a scientific theory is a broader and well-tested explanation that is supported by multiple lines of evidence and can account for a range of related phenomena.
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a long, thin solenoid has 800 turns per meter and radius 2.50 cm. the current in the solenoid is increasing at a uniform rate of 48.0 a/s.
The magnitude of the induced emf near the center of the solenoid is 0 V/m.
The given parameters;
number of turns of the solenoid, N = 700 turns/m
the solenoid's current, I = 48 A/s,
the wire's radius, r = 2.5 cm
The size of the induced emf near to the solenoid's center is calculated using the formula below:
B = µnI
dB/dt = µn*dI/dt
dB/dt = 0.032 T/s
Because of changes in the magnetic flux passing through a coil, a potential difference is created in the coil. To put it another way, it is claimed that electromotive force, or EMF, is created when the flux connecting with a conductor or coil changes.
\(E =\frac{r}{2} \frac{dB}{dr} \\\\E = \frac{0}{2} * (0.032) =0\)
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When two plane mirrors are kept at an angle of 60 degrees , how many images are formed?
Related to Subject Physics
Need Solution with All the steps
Answer ASAP
Answer:
5
Explanation:
Using the formula
Number of images = 360/theta - 1
theta is the angle of inclination
Given
Theta = 60°
Substitute
Number of images = 360/60 -1
Number of images = 6-1
Number of images = 5
Hence the number of images formed is 5
Calculate the frequency of a vibrating body if it vibrates 400 times in 20 seconds. Identify the category of sound it belongs to.(sonic sound/ ultrasound/ infra sound)
Answer:
F+20Hz
Explanation:
Candace is a goalie on her hockey team who has a reputation for stopping every puck before it enters the goal. Which skill most likely helps candace respond as the puck flies in her direction?.
Reaction time is the skill that mostly helps candace respond as the puck flies in her direction
Reaction time (RT) is a measure of the quickness with which a person responds to some sort of stimulus. It is defined as the interval of time between the stimulus and voluntary response in the subject.
Her reaction time is really quick , She reacts quickly to the different areas that the puck is going and is able to go across the crease to stop it
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I will name you the brainliest if you please help me.
Which formula is correct for calculating the ideal mechanical advantage?
Please help me.
effort distance/resistance distance or length of ramp/height of ramp or dE/dr is correct for calculating the ideal mechanical advantage
Theideal mechanical advantage would not have any friction. this is due to the fact that some of the effort put into the machine is lost trying to overcome friction.
ideal mechanical advantage is denoted by the sign IMA, that ignores the drawbacks of friction.
The force amplification achieved at "ideal" MA is measured without accounting for efficiency losses. Theoretically, a straightforward method might accomplish this level of amplification.One of the simplest representations of a mechanical advantage is a lever. You may model the mechanical advantage as follows:where the mechanical advantage corresponds to the a/b ratio. This is an illustration of a "perfect" mechanical advantage since no additional power is provided to the system or efficiency losses occur. The connection between the fulcrum and the lever would, at the very least, have some friction, which would dissipate part of the force amplification and produce a mechanical advantage that was less than optimal.To know more about ideal mechanical advantage visit : https://brainly.com/question/6968974
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A tuning fork is stuck against a table. It vibrates at a frequency
of 300 Hz. At what frequency will you hear the sound of the
tuning fork? Hz
Answer:
300 Hz.
Explanation:
The frequency of a sound wave is the same as that of the source. For example, a tuning fork vibrating at a given frequency would produce sound waves that oscillate at the same frequency.
The frequency that you will hear when the tuning fork is stuck against a table is 300 Hz.
What is a frequency?Frequency is a measurement of how often a repetitive event occurs in a given amount of time. It is commonly used to describe the rate at which waves oscillate or vibrate. The unit of frequency is hertz (Hz), which represents the number of cycles or oscillations per second.
For example, in the case of sound waves, frequency is related to the pitch of the sound. Higher frequency sound waves have a higher pitch, while lower frequency sound waves have a lower pitch. Similarly, in the case of electromagnetic waves such as light, frequency is related to the color of the light. Higher frequency electromagnetic waves correspond to colors such as blue and violet, while lower frequency electromagnetic waves correspond to colors such as red and orange.
The relationship between frequency, wavelength, and the speed of the wave is given by the formula:
frequency = speed of the wave / wavelength
This formula shows that the frequency of a wave is inversely proportional to its wavelength, assuming the speed of the wave remains constant. In other words, as the wavelength of a wave increases, its frequency decreases, and vice versa.
Frequency is an important concept in many fields, including physics, engineering, and communications. It is used to describe and analyze a wide range of phenomena, from the behavior of sound and light waves to the performance of electronic circuits and systems.
Here in the Question,
When a tuning fork is struck against a table, it vibrates at its natural frequency, which is determined by its physical properties such as its mass, shape, and material. The vibration of the tuning fork creates sound waves that travel through the air, and our ears perceive these waves as sound.
The frequency of the sound that we hear depends on the frequency of the sound waves that reach our ears. When the sound waves from the tuning fork travel through the air, they undergo a phenomenon called the Doppler effect, which causes the frequency of the sound waves to change depending on the relative motion between the source of the sound waves (the tuning fork) and the observer (our ears).
If the tuning fork is stuck against a table and is not moving relative to the observer, the frequency of the sound waves that reach our ears will be the same as the natural frequency of the tuning fork, which is given as 300 Hz in this case.
Therefore, the frequency that you will hear when the tuning fork is stuck against a table is 300 Hz.
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a 50 gram bullet is fired at a 2 kg block of lead resting on a frictionless surface. the bullet has an initial speed of 500 m/s, while the block is initially at rest. after hitting the block, the bullet rebounds with a speed of 300 m/s. how fast is the lead block moving after the bullet rebounds off of it? a. 10 m/s b. 20 m/s c. -5 m/s d. 5 m/s
The lead block is moving at a speed of 1 m/s after the bullet rebounds off of it. The correct answer is (c) -5 m/s.
First, we need to find the momentum of the bullet before it hits the block:
p_bullet = m_bullet * v_bullet = 50 * 500 = 25,000 g
We also need to find the momentum of the block before the bullet hits it:
p_block = m_block * v_block = 2 * 2000 = 4000 g
After the bullet hits the block, it rebounds with a speed of 300 m/s. The momentum of the bullet after the collision is:
p_bullet_after = m_bullet * v_bullet_after = 25,000 * 300 = 750,000 g
The momentum of the block after the collision is:
p_block_after = m_block * v_block_after = 4000 * 300 = 120,000 g
The momentum of the system (bullet + block) before the collision is:
p_system_before = p_bullet + p_block = 750,000 + 120,000 = 870,000 g
The momentum of the system after the collision is:
p_system_after = p_bullet_after + p_block_after = 750,000 + 120,000 = 870,000 g
We want to find the speed of the block after the collision, so we can set the total momentum of the system before and after the collision equal to each other:
p_system_before = p_system_after
870,000 g = 750,000 g + 120,000 g
870,000 g = 870,000 g
Dividing both sides by 870,000 g gives us:
v_after = 1
Therefore, the lead block is moving at a speed of 1 m/s after the bullet rebounds off of it. The correct answer is (c) -5 m/s.
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2a. to find the electric field at point p, first find the magnitude of electric field at point p due to each charge. (express your answer in terms of 10-6 k.)
The given units of 10^-6 k, the electric field would be expressed as N/C x 10^-6 k, where N/C is the standard unit for electric field.
To find the electric field at point P, you need to first find the magnitude of the electric field at point P due to each charge. This can be done using Coulomb's Law, which states that the magnitude of the electric field at a point is directly proportional to the magnitude of the charge and inversely proportional to the distance squared between the charge and the point.
So, if you have multiple charges, you would calculate the electric field due to each one individually, and then add up the vectors to get the net electric field at point P.
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Please help I'll mark brainliest
a car is moving 18m/s to the east. if it takes the car 5 seconds to reach a velocity of 19 m/s to the east, what is its acceleration?
Kinematics
First Velocity (Vf) = 18 m/s
Last Velocity (Vl) = 19 m/s
time (t) = 5 seconds
acceleration = ______?
Answer :
Vl = Vf + a × t
19 = 18 + a × 5
19 - 18 = 5a
1 = 5a
1 / 5 = a
0,2 m/s² = a ✅
Answer: 0.2 m/s^2 east
Explanation:
A PE X
A candle 3.0 cm high is placed 30 cm from a converging mirror with a focal length of 20 cm.
I hate to leave you without an answer, but there isn't enough information to be able to answer your problem.