The error that Roshan made is: the rays in the table describe how rays are drawn for a concave lens rather than for a convex lens.
What is lens?A lens is an optical device that is used to focus or diverge light rays through refraction. It is made up of a transparent material, such as glass or plastic, with at least one curved surface.
Roshan's table contained an error because he described the ray diagram for a concave lens rather than a convex lens.
A concave lens's ray diagram differs from that of a convex lens because the concave lens diverges light while the convex lens converges light.
After passing through the lens, the ray should be parallel to the main axis from the object to the lens. This is due to the law of refraction, which states that the incident angle equals the refracted angle.
Thus, Roshan's error was describing the ray diagram for a concave lens rather than a convex lens.
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Roshan's error was in stating that a ray passing through the center of a convex lens should bend and go through the focal point on the other side, which is incorrect as such rays do not change direction.
Roshan's error in describing how to draw a ray diagram for a convex lens is in the statement that 'The ray that goes through the center should bend and go through the focal point on the other side.' In fact, rays that pass through the center of a convex (converging) lens continue in a straight line without bending. The correct rules are:
A ray entering a converging lens parallel to its axis passes through the focal point F of the lens on the other side.A ray passing through the center of either a converging or a diverging lens does not change direction.Therefore, the correct statements for a convex lens would be that a ray that starts out parallel with the main axis should bend toward the axis and go through the focal point on the other side, and that the ray passing through the center of the lens should not deviate from its path.
My mom and I walked 3,600 m in 90 minutes. What was our speed in m/min?
While escaping from a building in which a fire is burning, 40 people pass through a smoky
room in which the CO volume fraction
1000 uL/L, the HCN volume fraction
uL/L, and the C02, volume fraction is
0.02. Despite some visible smoke in the
they cross the room in about 10 seconds.
Calculate the fractional effective dose of
narcotic gases each person has accumulated
and estimate whether all of them will make
to the exit door.
my bad i clicked the wrong question to do sorry i wish i could help but im dumb lol
1. The term acceleration was used in paragraphs 1-3. Which of the following could be a definition of acceleration?
A. A change in an object's speed
B. At object at rest
C. A change in an object's direction
D. Both A and C
The answer is
A. a change in an objects speed
D. Both A and C
definitions of acceleration
A change in an object's speed
A change in an object's direction
The velocity vector change during a time interval divided by the time interval is the definition of acceleration.
How does acceleration work?
The term "acceleration" refers to a change in an object's velocity with regard to time. The definition of velocity is the rate at which an object moves in a specific direction.
Examples
At a speed of 10 meters per second, something was heading north.An apple is tumbling to the ground.Jane is moving at a 3 kilometer per hour pace toward the east.Tom was moving at a 3 kph pace toward the east.Sally was moving at a 3 kph eastward pace.Gravitational accelerationTo learn more about "acceleration refer to:
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Which type of element seeks to gain electrons?
Answer:
Non-metals
Explanation:
when they form ionic compounds do so by gaining electrons. This due to the fact that they have high ionization energies and high electron affinities (referring to their ability to collect electrons). When they do form ions, they are of negative charge and are called anions.
Visit this website and locate the element chlorine, whose
chemical symbol is Cl. Click on the square to read about
the element.
Why is it important to use caution when handling
chlorine?
Answer:
Chlorine is a respiratory irritant. The gas irritates the mucus membranes and the liquid burns the skin. As little as 3.5 ppm can be detected as an odor, and 1000 ppm is likely to be fatal after a few deep breaths. In fact, chlorine was used as a war gas in 1915.
Explanation:
Chlorine, with the chemical symbol Cl, should be handled with caution because it can be harmful. Chlorine gas can cause respiratory problems if inhaled, while liquid chlorine can cause skin and eye burns. It can also react to form more hazardous substances.
Explanation:Chlorine, represented by the chemical symbol Cl, is an element often found in various compounds and used for a broad range of applications, including water treatment and disinfection in pools. However, it's important to handle chlorine with caution because it can be harmful to human health.
As a gas, chlorine is severely irritating and dangerous, causing issues with respiratory function if inhaled. Its liquid form can cause burns on the skin and eyes. Furthermore, chlorine can react with other chemicals, which might lead to the formation of substances more hazardous than the original chlorine.
This is why proper training, correct handling techniques, and safety measures should always be implemented when dealing with chlorine to minimize risks
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which form of energy is due to an object's position or location
Answer:
Potential energy
Explanation:
Potential energy is the energy stored within an object, due to the object's position, arrangement or state. Potential energy is one of the two main forms of energy, along with kinetic energy.
Answer:
potential
Explanation:
(PLEASE HELP) Which of the following is the name for two or more types of atoms that are chemically bonded together?
A. Compound
B. Colloid
C. Element
D. Solvent
Answer: A
Explanation:
Answer:
A compounds
Explanation:
Which of the following types of electromagnetic radiation has the longest wavelength?
Answer:
Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
Answer:
radio waves
Explanation:
an object with a mass of 6.0 kg accelerates 4.0 m/s^2 when an unknown force is applied to it. what is the acceleration?
Answer:
24 N
Explanation:
F=ma
F= 6 × 4 = 24 N
that's it.
What wave property is shown
Answer:
The answer is Refraction
Answer:
Refraction.
Explanation:
Refraction is where lighwaves are bent. your eye assumes that the object is where the light ray is coming from when it actually bent to come at your eye from that angle this is why straws appear slightly out of place in water.
Match the following.
1. circuit with only one current path
parallel circuit
Watt's law
2. circuit with two or more branches
equation that relates electrical power, current, voltage, and
resistance
3. equation
series circuit
Answer:
A) The current in a parallel circuit and the voltage in a series circuit
Explanation:
Answer:
1. series circuit
2. parallel circuit
3. Watt's law
Explanation:
hope this helps someone!
The atomic number of an element is 22 while its mass number is 48. How many neutrons does the element have
Answer:
The answer is 26 neutrons
Explanation:
The element with an atomic number of 22 and a mass number of 48 has 26 neutrons. This is calculated by subtracting the atomic number from the mass number.
Explanation:The question asks how many neutrons does an element have, given that its atomic number is 22 and its mass number is 48. In chemistry, the atomic number represents the number of protons in an atom, in this case, 22. The mass number represents the sum of the number of protons and neutrons. Therefore, if you subtract the atomic number (protons) from the mass number (protons + neutrons), you will get the number of neutrons.
Mathematically, this can be represented as: Neutrons = Mass number - Atomic number. In this situation, the number of neutrons would be 48 (mass number) - 22 (atomic number), which equals 26 neutrons.
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why must you use temperature to specify how hot or cold something is?
Temperature is crucial as it indicates the average kinetic energy of particles. Thermometers measure temperature using various material properties. Temperature scales allow for precise measurement of how hot objects are.
Temperature is a measure of how hot or cold an object is relative to another object. It is critical to specify how hot or cold something is because temperature indicates the average kinetic energy of the particles in matter, which directly affects various processes like chemical reactions.
Temperature is operationally defined to be what we measure with a thermometer. Thermometers rely on properties of materials like the expansion and contraction of liquid mercury or variation of resistance in wires to provide accurate temperature readings.
Using a temperature scale allows for quantitative measurement of how hot an object is, enabling us to understand changes in thermal energy content and the flow of heat between objects accurately.
In nature, hot air tends to rise and cool air tends to sink. This is behind the concept of convection heating that is used in ovens. Convection currents occur only in fluids such as liquids and gases but not in solids.
Which of the examples below is an example of convection?
A) rubbing your hands together.
B) heating a fish tank.
C) basking in the sun.
D) striking a match.
Answer:
BExplanation:
MODES OF HEAT TRANSFER
1) Conduction: This type of heat transfer happens when there is direct contact between the two object.
2) Convection: This type of heat transfer happens when there is a movement of fluid (liquid or gas).
3) Radiation: This type of heat transfer happens when there is direct transfer of energy through space.
A. Rubbing your hands together, is a type of energy transformation in which mechanical energy transforms to heat energy.
B. Heating a fish tank: Hot liquid tends to rise and cool liquid tends to sink and thus the fish tank heats.C. Basking in the sun: is a type of radiation as the sun energy is transferred through space.
D. Striking a match: is a energy transformation in which mechanical energy transforms to heat and light energy.
please make me brainlist
Can trees be replenished by nature?
Answer:
yes
Explanation:
Which type of element seeks to gain electrons
Answer:
nonmetals
Explanation:
On Mars, how much would a 1kg object weigh
Answer:
Explanation:
On Mars, 1 kilogram would be about 3.5 Newtons. So, on Earth, the person would mass 77 kilograms, but weigh 754.6 Newtons. On Mars, the person would still mass 77 kilograms (because mass does not change with gravity), but weigh 269.5 Newtons.
Answer:
3.5 newtons
Explanation:
The weigh of the earths surface is 9.8 newtons so on mars it would be 3.5 newtons
Question 1
Joseph is conducting an investigation on how two objects compare in mass, volume, and force with each other. When determining the
gravitational force between the two objects, which of the following characteristics of the objects should be considered?
Mass
Volume
State of matter
Shape
Joseph is conducting an investigation on how two objects compare in mass, volume, and force with each other. When determining the gravitational force between the two objects, the following characteristics of the objects should be considered :
MASS AND DISTANCE
Explanation:
The gravitational force is a force that attracts any two objects with mass. In fact, every object, including you, is pulling on every other object in the entire universe. This is called Newton's Universal Law of GravitationThe strength of the gravitational force between two objects depends on two factors, mass and distance. The force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.When two objects are gravitational locked, their gravitational force is centered in an area that is not at the center of either object, but at the barycenter of the system. The principle is similar to that of a see-saw.Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet's rotation.The gravitational force between two objects is determined by their masses and the force of gravity. The volume, state of matter, and shape of objects do not impact gravitational force, as it is the interaction of objects' masses that matter.
When determining the gravitational force between two objects, the characteristics of the objects that should be considered are their mass and the force of gravity that acts upon them. The volume, state of matter, and shape do not directly impact the gravitational force between objects. According to Newton's Law of Universal Gravitation, the force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Essential Knowledge in physics tells us that gravitational force describes the interaction of one object that has mass with another object that has mass. Therefore, it is the total quantity of matter—an object's mass—that influences the gravitational force. In contrast, the volume depends on the size of an object and its shape but does not affect gravity.
A compound composed of a metal and nonmetal is exposed to an electric current
attached to a light bulb. What do you expect should happen?
A.Light bulb turns on
B.Light bulb turns off
C.Light bulb flickers dimly
D.Light bulb gets colder
Answer:
A light bulb turns on
Explanation:
When a metal-nonmetal compound conducts electricity, the connected light bulb will turn on, indicating that the electric current is flowing through and the substance is an electrical conductor.
When a compound composed of a metal and nonmetal is exposed to an electric current and connected to a light bulb, the expected observation is that the light bulb will shine, indicating that the electric current is flowing through the compound. This implies that the substance being tested is an electrical conductor. Examples provided in the background information highlight that the flow of currents can lead to various results such as the warming of a wire in a circuit, which might lead to a continuous flow of electricity in the case of a thermocouple, or the attraction between warm and cold ends of a compound wire.
When a light bulb is connected in a circuit and current flows through it, the filament of the bulb heats up and emits light due to its resistance. In some cases, as with incandescent lights, this is not energy-efficient due to the heat produced. However, if the resistance in the circuit increases, we would expect the bulb to emit redder light, as the temperature of the filament would decrease, shifting the color spectrum towards the red end due to a decrease in energy emission.
Thus, for the choices provided, the answer would be A. Light bulb turns on, as long as the circuit remains closed and the substance allows for sufficient current to flow.
Modern dual-processing theory is the idea that our minds have —
tracks.
O
A. conscious and unconscious
O
B. emotional and rational
O
C. conscious and preconscious
O
D. subconscious and conscious
Answer:
conscious and unconscious
Explanation:
Garrick rubs an inflated balloon against his hair. He then touches the balloon against a non-conducting wall.
Which picture shows how the charge on the balloon and the wall are distributed?
Answer:
Figure A
Explanation:
At first, the inflated balloon is rubbed against the hair.
In this situation, the balloon is charged by friction: because of the friction between the surface of the balllon and the hair, electrons are transferred from the hair to the surface of the balloon.
As a result, when the balloon is detached from the hair, it will have an excess of negative charge (due to the acquired electrons).
Then, the balloon is placed in contact with the non-conducting wall.
The non-conducting wall is initially neutral (equal number of positive and negative charges).
Because the wall is made of a non-conducting material (=isolant), the charges cannot move easily through it. Therefore, even though the charges on the wall feel a force due to the presence of the electrons in the balloon, they will not redistribute along the wall.
Therefore, the charges on the wall will remain equally distributed, as shown in figure A.
2. What is the percent composition of sulfur in H2SO4?
CA. 98.1%
OB. 65.2%
O C.32.7%
D.2.1%
Answer:
C. 32.7%
Explanation:
% composition = ( mass S / mass H2SO4 ) × 100 = 32.08/ 98.10 × 100 = 32.7 % pls mark brainliest
Can anyone help me with this?
Answer:
I Think The 1st One
Explanation:
Cause it makes sense
Hope it was Right
a driver's foot presses with a steady force of 20N on a pedal in a car as shown.
Answer:
160N
Explanation:
Moments must be conserved - so.
[tex]20 * 0.4 = F * 0.05[/tex]
[tex]F=\frac{20*0.4}{0.05} = 160[/tex]
A driver's foot presses with a steady force of 20 N on a pedal in a car, so the force F pulling on the piston is 160 N. Hence, option D is correct.
What is Force?A force in physics is an input that has the power to change an object's motion. A mass-containing object's velocity can vary, or accelerate, as a result of a force. Intuitively, a pushing or a pull can also be used to describe forces. Being such a vector quantity, a force does have magnitude and direction. The SI unit metric newton is used to measure it (N). The letter F stands for force.
According to Newton's second law's original formulation, an object's net force is equal to the speed that its momentum is changing over time.
From the given data in the question,
The momentum must be conserved,
20 × 0.4 = F × 0.05
F = (20 × 0.4)/0.05
F = 160 N
Therefore, the force is 160 N.
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In the center of the Milky Way galaxy is a
a
Black hole
b
Neutron star
C
Supernova
d Nebula
Answer:
A.Black hole
Explanation:
The Galactic Center is the rotational center of the Milky Way galaxy'; it is a supermassive black hole of 4.100 ± 0.034 million solar masses which powers the compact radio source Sagittarius A*
A personal career profile form evaluates two sets of data
Answer: It evaluates personal information and career information.
Explanation:
Answer:
A. personal information and career information
Explanation:
The buoyant force on an object is dependent on _____.
a. the shape of the object
b. the volume of the object
c. the mass of the object
d. the object’s density
PLEASE ANSWER ASAP THANKS!!
Answer:
d. The objects density
Explanation:
Density is the measure of how much an an object will sink or float in liquid or gas. The density of the liquid or gas is also a factor in how much the object will sink or float.
which cell structure is responsible for taking in and breaking down foreign particles and damaged organelles?
Answer:
lysosomes
Explanation:
17. Which sound has the highest pitch? 156 Hz (hertz); 258 Hz (hertz); 14 dB (decibels): 563 dB
Answer:
258Hz
Explanation:
as 14 and 563 are measurings of decibels which are loudness. 156Hz is a lower pitch than 258Hz
The highest pitch among the given options is 258 Hz, as pitch is related to frequency. The higher the frequency, the higher the pitch. Decibels (dB) measure loudness, not pitch.
Explanation:The sound with the highest pitch among the options given, 156 Hz (hertz) and 258 Hz (hertz) is 258 Hz. Pitch is directly related to the frequency of the sound. The higher the frequency, the higher the pitch. Therefore, a sound wave with a frequency of 258 Hz is perceived as a higher pitch than one with a frequency of 156 Hz. However, the units dB (decibels) mentioned are units of loudness or intensity of the sound, not pitch, so they cannot be compared in terms of pitch.
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Thomas gets on an elevator on the 1st floor. He goes up 8 floors. Then he
continues up 2 additional floors. Finally, he goes down 5 floors before leaving
the elevator. On what floor does Thomas get off?
O
A. 2nd floor
O
O
O
B. 16th floor
C. 15th floor
D. 6th floor