Answer: Use Roman Numerals in answering. 11. - 27310189. ... Hiwalay! Hatol. Unang puntos, Bughaw! 12. Hinto! Pula, pangalawang laglag. Panalo ...
Explanation:. Hinto! Hiwalay! Bughaw, 1 puntos. Unang paglabag! 14. Hinto! Bughaw, pangalawang paglabag
4) The object that changes its position relative to a fixed point with time is called ..
What is the difference between regular reflection and diffuse reflection?
Answer:
regular reflection occurs at the surface of a plane surface and diffuse reflection occurs at the surface of a rough surface
If your bathroom scale assesses your weight to be 98, 211, and 167 pounds on successive measurements in the same day, the scale would suffer from low _____ reliability.
The scale that would suffer from low Test-Retest reliability when the bathroom scale assesses on measurements in the same day.
How is reliability determined ?Producing a large number of evaluation-focused questions and randomly dividing them into two sets of questions is the most popular method for gauging the dependability of parallel forms. You determine the correlation between the findings after the same respondents respond to both sets of questions.
A measure's reliability is its constancy. Internal consistency, consistency among things, and consistency across different researchers are the three types of consistency that psychologists take into account (inter-rater reliability).
Because it affects the worth of a psychological test or study, reliability is crucial. Its dependability assures value to the psychology field and other fields where it has importance, such as business or education, if test findings are consistent when researchers undertake a study.
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Ernest rutherford was a prominent scientist who contributed significantly to the theory of atomic structure. True or false?.
It is true that Ernest Rutherford contributed significantly to the theory of atomic structure.
He observed that particles with a positive charge deflected when passing through a thin sheet of gold foil concluded that the positive part of the atom is small and dense.
The Ernest Rutherford experiment describes planetary model of an atom. According to the model, an atom has a tiny, compact, positively charged centre called a nucleus, where almost all of the mass is concentrated, while light, negatively charged particles called electrons orbit far around it, much like planets orbit the Sun. In his experiment, the observation that a positive charge is deflected through a thin sheet of gold foil led to the conclusion that the deflection some of the positive charge occurs in a small region of the atom while the majority passed through the atom (which was also concluded to be empty space).
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a person stands on a scale in an elevator. as the elevator starts, the scale has a constant reading of 598 n. as the elevator later stops, the scale reading is 384 n. assume the magnitude of the acceleration is the same during starting and stopping. (a) determine the weight of the person. n (b) determine the person's mass. kg (c) determine the magnitude of acceleration of the elevator.
The magnitude of the acceleration of the elevator is approximately 3.51 \(m/s^2\).
(a) The scale reading when the elevator is at rest gives the normal force acting on the person, which is equal in magnitude to the person's weight. Thus, the weight of the person is 598 N when the elevator is at rest.
(b) The weight of an object is given by the product of its mass and the acceleration due to gravity.
weight = mass x acceleration due to gravity
598 N = mass x 9.81 \(m/s^2\)
mass = 60.9 kg
Therefore, the person's mass is approximately 60.9 kg.
(c) We can use Newton's second law (F = ma) to find the acceleration of the elevator. The net force acting on the person is given by:
net force = final force - initial force
net force = 384 N - 598 N
net force = -214 N
net force = mass x acceleration
-214 N = 60.9 kg x acceleration
acceleration = -3.51 \(m/s^2\)
Therefore, the magnitude of the acceleration of the elevator is approximately 3.51 \(m/s^2\).
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Exercise 7 A massive uniform plank of length L=6m and mass M=90kg rests on top of two sawhorses separated by D=1.5m, located equal distances from the center of the plank. A child tries to stand on the right hand end of the plank. If the plank is to remain at rest, how massive can the child be?
If a child tries to stand on the right hand end of the plank. the maximum mass of the child that can stand on the right-hand end of the plank without tipping it over is 60 kg.
How massive can the child be? In order for the plank to remain at rest, the torques on the plank must balance. The torque due to the weight of the plank can be calculated as:
τ_plank = (1/2)Mg*L
where g is the acceleration due to gravity.
Since the sawhorses are located at equal distances from the center of the plank, the torque due to the weight of the plank is evenly distributed between them, and each sawhorse must support half of the weight of the plank:
F_plank = (1/2)Mg
where F_plank is the force that each sawhorse must exert on the plank.
When the child stands on the right-hand end of the plank, they will create an additional torque on the plank. The magnitude of this torque can be calculated as:
τ_child = F_child * (L/2)
where F_child is the force that the child exerts on the plank, and L/2 is the distance from the child to the center of the plank.
For the plank to remain at rest, the torque due to the child's weight must be balanced by the torque due to the sawhorse forces:
τ_child = τ_sawhorses
F_child * (L/2) = F_plank * D
Substituting the expressions for F_plank and τ_plank, we get:
F_child * (L/2) = (1/2)Mg*D
Solving for the maximum mass of the child, we get:
M_child = 2*F_child/g
M_child = 2*(L/2)F_plank/(gD)
M_child = LF_plank/(gD)
Substituting the values for L, M, D, and g, we get:
M_child = (6 m)(1/2)(90 kg9.81 m/s^2)/(1.5 m9.81 m/s^2)
M_child = 180/3
M_child = 60 kg
Therefore, the maximum mass of the child that can stand on the right-hand end of the plank without tipping it over is 60 kg.
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Dos personas aplican sendas fuerzas de 50N sobre una mesa, en direcciones horizontales perpendiculares entre sí. ¿Cuanto vale el módulo e la resultante de estas dos fuerzas? Ilustra tu respuesta con un dibujo.
Answer:
|Fr| = 50*√2 [N]
Explanation: (See Annex )
En el diagrama de cuerpo libre ( mostrado en el anexo) se ve que, al ser las dos fuerzas iguales (50 N) el paralelogramo formado para encontrar la resultante de las fuerzas (Fr) es un cuadrado, y la diagonal de ese cuadrado ( que es al mismo tiempo la hipotenusa del triangulo recto OPA ) es igual a:
Hipotenusa = |Fr| = √ (50)² + (50)²
|Fr| = √2* (50)²
|Fr| = 50*√2 [N]
the cracking noise produced by aluminum roofing sheets on a house during a hot sunny day is as a results of?
Answer: expansion of the sheet
horizontal lightning conductor runs must be connected to the reinforcing steel at intervals not exceeding ? .
Horizontal lightning conductor runs must be connected to the reinforcing steel at intervals not exceeding 20 feet. This helps to create a continuous and low-resistance path for the lightning to follow.
Lightning conductors are installed on buildings to provide a path for lightning to follow and direct it safely to the ground. Horizontal runs of lightning conductors need to be connected to the reinforcing steel of the building to ensure proper grounding. To prevent electrical resistance and ensure that the conductor is effective, the connections should not exceed intervals of 20 feet.
Lightning conductors are designed to provide a safe path for lightning to travel, reducing the risk of damage to the structure. To ensure this safety, the intervals between connections to the reinforcing steel should not exceed 30 meters (100 feet). This is because having a shorter distance between connections allows for a more efficient path for the lightning to follow, thus reducing the chances of damage.
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To win the game, a place kicker must kick a
football from a point 37 m (40.4632 yd) from
the goal, and the ball must clear the crossbar,
which is 3.05 m high. When kicked, the ball
leaves the ground with a speed of 21 m/s at
an angle of 35.8
◦
from the horizontal.
The acceleration of gravity is 9.8 m/s
2
.
By how much vertical distance does the ball
clear the crossbar?
Answer in units of m.
We know that the vertical clearance of the crossbar by the ball is x=1.57m.
Clear the crossbar: What does that mean?From a point 36.0 m from the goal, a place kicker must kick a football. The ball must clear the 3.05 m-high crossbar as a consequence of the kick. The ball kicks off the ground with a speed of 20.0 m/s at an angle of 53° from the horizontal.
v=18cos48 m/s
Time is therefore defined as distance multiplied by speed, which equals 28/18cos48 divided by 48, or 2.324
Use s = ut + (0.5)a(t2) when resolving vertically.
Where is the unidentified distance, s? (the height above the GROUND)
initials are u (vertical) 18 divided by 48 gives a speed of -9.8 meters per second (negative since we take upwards as positive)
t = 2.3247... (what we found previously) (what we found previously)
Adding the figures to the formula gives 4.616
Subtracting the goalpost's height (3.05) results in 1.57m above the crossbar, or 1.56.
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If you were to include a capacitor in the following circuit, would the light bulb be brighter or not? ac voltage from wall socket w O It would get brighter O It would be dimmer O No effect O The bulb will be exploded
If a capacitor is added in series with the light bulb in an AC circuit powered by a wall socket, the bulb will become dimmer.
In an AC circuit powered by a wall socket, the light bulb will get dim if a capacitor is put in series with it. This is because a phase shift between the voltage and current waveforms will result from the capacitor acting as a reactive load.
The voltage and current waveforms of an AC circuit are not in phase with one another.
This is a result of the circuit's reactive components, such capacitors and inductors.
The phase of the voltage and current waveforms will alter if a capacitor is introduced in series with the lightbulb. The bulb will get less power and grow dimmer as a result of the current passing through the circuit being delayed in relation to the voltage.
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(The subgraph-isomorphism problem takes two undirected graphs G1 and G2, and it asks whether G1 is isomorphic to a subgraph of G2 . Show that the subgraph-isomorphism problem is NP-complete.
The subgraph-isomorphism problem is an NP-complete problem that involves determining whether a graph G1 is isomorphic to a subgraph of a larger graph G2. This problem is a crucial component of many fields, including pattern recognition, computer vision, and computational biology, and is considered difficult to solve efficiently.
The subgraph-isomorphism problem is an NP-complete problem that involves determining whether a graph G1 is isomorphic to a subgraph of a larger graph G2. This problem is a crucial component of many fields, including pattern recognition, computer vision, and computational biology, and is considered difficult to solve efficiently.
In the subgraph-isomorphism problem, two undirected graphs G1 and G2 are taken, and the question is whether G1 is isomorphic to a subgraph of G2. This means that there is a one-to-one correspondence between the vertices and edges of G1 and those of the subgraph of G2, and this correspondence preserves the adjacency of edges and vertices.
To show that the subgraph-isomorphism problem is NP-complete, we first need to prove that it is an NP problem. We can do this by showing that a solution to the problem can be verified in polynomial time. Given two graphs G1 and G2 and a subgraph S of G2, we can verify whether G1 is isomorphic to S by checking whether the vertices and edges of G1 match the vertices and edges of S, respectively.
To show that the subgraph-isomorphism problem is NP-complete, we need to show that it is at least as hard as any other NP problem. We can do this by reducing a known NP-complete problem, such as the satisfiability problem (SAT), to the subgraph-isomorphism problem.
In the reduction, we take an instance of SAT, which involves a Boolean formula and ask whether it is satisfiable. We convert this instance into a graph G1 such that a subgraph of G2 is isomorphic to G1 if and only if the Boolean formula is satisfiable.
By this transformation, we can solve the satisfiability problem using the subgraph-isomorphism problem. Therefore, since the subgraph-isomorphism problem is at least as hard as the satisfiability problem, it is NP-complete.
In conclusion, the subgraph-isomorphism problem is a challenging problem to solve, and it is known to be NP-complete. This means that finding a polynomial-time solution to this problem is unlikely, and researchers need to develop more efficient algorithms to solve this problem.
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A plane is approaching landing at 140km/sec. It decelerates at a rate of -14.82 km/sec². How much time would it take the plane to land and come to a complete stop?
Answer:
Initial velocity, u = 600km/h
Final velocity, v = 1100km/h
Acceleration = 10km/h/s=600km/h2
From relation,
a=t(v−u)
t=a(v−u)
t=600(1100−600)
=500/600=5/6 hr=50 sec
Tom goes outside on a 20 C day and knocks two pieces of wood together. If he hears the echo 0.554 seconds later, how far away is the wall?
If you were to stare at a green dot for a relatively long period of time and then shift your gaze to a blank white screen, you would see a ________ negative afterimage. a. blue b. yellow c. black d. red
If you stare a green dot for a relatively long period of time and then shift your gaze to a blank white screen, you would see a red negative after image.
This is based on the theory of colour vision. It states that all the colours we see and perceive in the natural world are made up of three colour complexes that have the opposite effects. The complexes are the red-green complex, the blue- yellow complex and the black-white complex.
This means that when we perceive one colour, for example, let us take green, the other colour won't be visible. This is what happened here. Later we get to see red and green gets vanished.
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If you increase the mass of the Earth, and drop the mass of the Sun, what happens?
Answer:
...cause a more gravitational force and a change in the nature of orbit.
Explanation:
any regularly repeated small feature can serve as a diffraction grating and separate light by color. which color gets deflected the most, and which the least?
The color that gets deflected the most by a diffraction grating is blue, while the color that gets deflected the least is red.
When light passes through a diffraction grating, it undergoes interference and diffraction, resulting in the separation of colors. The amount of deflection or bending of light depends on the wavelength of the light. Shorter wavelengths (blues and violets) are deflected more than longer wavelengths (reds and oranges).
The reason for this lies in the fundamental principles of diffraction. Diffraction occurs when light encounters an obstacle or a periodic structure with features comparable to the wavelength of light. In a diffraction grating, these features are the regularly repeated small slits or grooves. When light passes through these slits, it diffracts into multiple beams, each corresponding to a different wavelength.
According to the equation for diffraction by a grating, the angle at which the different colors are diffracted depends on the wavelength of the light and the spacing between the slits. The equation, known as the grating equation, is given by:
nλ = d * sin(θ),
where n represents the order of diffraction, λ is the wavelength of light, d is the spacing between the slits, and θ is the angle of diffraction.
Since the equation involves the sine of the angle of diffraction, smaller wavelengths (such as blue and violet) will have larger angles of diffraction compared to longer wavelengths (such as red and orange). This means that blue and violet light will be deflected more than red and orange light.
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How was Mendeleev first periodic table like the periodic table today
Answer:
He began organizing the known elements according to their atomic weights and chemical properties.
Explanation:
which is greater a force of 100 N or the weight of 50 kg on earth’s surface
Answer:
this ans is 42.85
Explanation:
i dont not explain but i hipe you get it
prove- s=UT+1/2 of 2
Answer:
I hope it helped U......
Can a molecule of DNA contain 60% thymine? Why
or why not?
Answer:
The possibility of Adenine=40% and Thymine=60% is only in single stranded DNA molecule. In the question, the DNA sample referred is a single stranded DNA. If guanine=10% as guanine will always pair with cytosine, i.e.cytosine is also 10% then adenine and thymine accounts 80% as adenine will always pair with thymine.
A molecule of DNA cannot contain 60% thymine because this amount will surpass 100% in consideration of its complementary base.
DNA:DNA or deoxyribonucleic acid is a biological molecule that stores genetic information in living cells.
DNA is a double stranded molecule that consists of nucleotide bases as follows:
AdenineThymine GuanineCytosineAccording to Chargaff in his rule, the amount of adenine & thymine and guanine & cytosine in a DNA molecule is the same, which must equal 100% overall.
Therefore, if thymine is 60% in the DNA, adenine will also be 60%, which in total has already surpassed 100% without adding the other two bases.
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what are the differences between the hubble space telescope and the james webb telescope?
Answer:
Their missions are different - Hubble Telescope's goal is to capture distant stars and galaxies while the James Webb telescope was always meant for long-term exposure and deep space capturingThe Hubble telescope specializes in ultraviolet wavelength - its infrared technology enables it to capture more images from older galaxies.The james webb telescope has a more profound infrared vision - James Webb has been significantly front-loaded with infrared technology to capture more light and a better span of deep space.
ans pls
Which of the products will not follow the traditional S-curve pattern?
The product that will not follow the traditional S-curve pattern is the furniture industry.
The S-curve pattern is a model that describes the progress of a product from its introduction to its decline. It is used to visualize the rate of adoption of a new product or technology over time. In the traditional S-curve pattern, a product has a slow start, followed by a period of rapid growth as it gains market acceptance. This period is followed by a plateau phase where the rate of growth slows down as the product reaches maturity. Finally, the product reaches its saturation point where sales begin to decline due to market saturation and competition.In the case of mobile phones and automobiles, they both follow the traditional S-curve pattern. Mobile phones were first introduced in the 1980s, and after a slow start, they gained widespread acceptance in the 1990s and early 2000s. The growth rate has slowed down as the market has become saturated, but the industry is still growing as new technologies are introduced. Similarly, automobiles followed a similar pattern, with a slow start in the early 1900s followed by rapid growth in the 1920s and 30s. The furniture industry, on the other hand, will not follow the traditional S-curve pattern. Furniture is a mature industry, and there is already a lot of competition in the market. The rate of growth has been slow for a long time, and it is unlikely to see a sudden increase in demand for furniture. The industry is not driven by new technologies or innovations, and therefore, it will not experience the rapid growth phase that is characteristic of the S-curve pattern.For more questions on innovations
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The correct question would be as
Which of the products will not follow the traditional S-curve pattern? Select one: a. Mobile phones b. All of the above c. Automobiles d. Furniture Industry
what is my sisters
Answer:
your sister
Explanation:
a woman or girl in relation to other daughters and sons of her parents.
PLEEASEEE HEELLPPPP !!!!!!!
The voltage waveform in the given figure is applied across a 55-μf capacitor
Answer:
Explanation:
A capacitor is an electronic component that stores and releases electrical energy. It consists of two conductive plates separated by an insulating material called a dielectric. When a voltage is applied across the plates, charge accumulates on them, creating an electric field between the plates.
The capacitance of a capacitor is a measure of its ability to store charge. It is typically represented by the symbol 'C' and is measured in farads (F). In your case, you mentioned a 55-μF (microfarad) capacitor, indicating its capacitance value.
When a voltage waveform is applied across a capacitor, the capacitor charges and discharges in response to the changes in voltage. The rate at which the capacitor charges and discharges depends on the capacitance and the resistance in the circuit
Since there is no figure provided in the text, I am unable to reference it for the specific details of the voltage waveform. However, I can explain the general behavior of a capacitor when a voltage waveform is applied.
When a voltage waveform is applied across a capacitor, the capacitor charges and discharges in response to the changes in voltage. The behavior of the capacitor is determined by its capacitance, which is given as 55 μF in this case.
As the voltage waveform varies, the capacitor stores and releases electrical charge. During the rising portion of the waveform, the capacitor charges and accumulates energy. During the falling portion, the capacitor discharges and releases the stored energy.
The exact behavior and characteristics of the voltage waveform and the charging/discharging process depend on the specific shape and frequency of the waveform. Without the specific details of the voltage waveform provided in the figure, it is challenging to provide a more detailed analysis.
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1
2
3
S
6
10
Which statement describes gravity?
There is no defined unit of measurement for gravity.
O Gravity is the force that pulls objects toward Earth's center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects decreases as the mass of one increases.
Gravity is a fundamental, universal force that pulls objects toward Earth's center. It increases with mass and decreases with distance. Measured in Newtons, it affects all objects.
Gravity is the force that pulls objects towards Earth's center. Gravitational pull increases as the mass of one object increases, while it decreases as the distance between two objects increases. These statements describe gravity.Gravity is a fundamental force of nature, which means that it is always present. It holds planets and stars in their orbits around the sun, and it keeps objects on Earth's surface.Gravity is a universal force, meaning that it affects all objects in the universe. The gravitational pull between two objects is proportional to their masses and the distance between them.There is a defined unit of measurement for gravity known as Newtons. Newtons are used to measure the force of gravity acting on an object. Objects that have a small mass still have a gravitational pull, but it is weaker than objects with a larger mass.For more questions on Gravity
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The correct question would be as
Which statement describes gravity? Select three options. There is no defined unit of measurement for gravity.
Gravity is the force that pulls objects toward Earth’s center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects increases as the mass of one increases.
Gravitational pull decreases when the distance between two objects increases
Brian uses a starter pistol to mark the start of a 100 m sprint. The sound wave produced by the pistol reflects from a nearby wall, and he hears the echo of the shot 600 ms (milliseconds) after the pistol was fired. Calculate how far the wall was from Brian. The speed of sound in air is approximately 330 m/s
The distance that we have from which the echo sounded is 99 m.
What is echo?An echo is the repeated sound that results from sound waves being reflected off of a surface. Sound waves bounce back and re-emit from solid objects or boundaries, returning to the source of the sound. The original sound is clearly repeated in this reflected sound, giving the impression of an echo.
Echoes are most commonly experienced in environments with hard, smooth surfaces that can reflect sound effectively, such as mountains, canyons, large empty rooms, or open outdoor spaces
From echo;
V = 2x/t
x = Vt/2
x = 330 * 600 * 10^-3/2
= 99 m
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a copper wire with square cross section carries a conventional current i in the x direction. there is a magnetic field b in the -z direction. draw a diagram illustrating the situation, to help you answer the following questions. what is the direction of eparallel, the electric field that causes the current to flow? ---select--- what is the direction of the drift velocity of the mobile electrons? ---select--- what is the direction of the magnetic force on the moving electrons? ---select--- what is the direction of etransverse, the electric field due to the hall effect, inside the wire? ---select--- if the mobile charges had been positive (holes) instead of negative, what would have been the direction of the magnetic force on the moving positive charges? ---select--- if the mobile charges had been positive instead of negative, what would have been the direction of the transverse electric field? ---select---
A copper wire with square cross section carries a conventional current i in the x direction there is a magnetic field b in the -z direction.
According to the conventional current theory, current leaves the positive terminal, travels through the circuit, and then enters the source's negative terminal. When electricity was discovered, this convention was used. Conventional current is described as flowing in the same direction as the positive charge flow, regardless of the kind of charge carriers. Hence, conventional current flows in the opposite direction of the electrons in metals when the charge carriers (electrons) are negative.
Step 1
Direction of Current, I= -x direction
Direction of magnetic field, B= +z direction
Step 2
1)Current is in the same direction of electric field in conductor. Hence E parallel is in -x direction.
2) Drift velocity of electrons is in the opposite direction of current. Hence drift velocity of mobile electron is in +x direction.
3) magnetic force on -ve charge can be found by using Fleming left hand rule or using thumb, index finger & middle finger of left hand perpendicular to each other.
Thumb- Force
Index Finger- Magnetic Force
Middle finger- Current direction
on arranging things as asked in question, force direction is +y direction.
4) +z
5) +z because for positive charges v = +j
6) -z, as charges change from negative to positive direction of E transverse will also change.
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You are riding a bicycle. if you apply a forward force of 172 n, and you and
the bicycle have a combined mass of 51 kg, what will be the forward
acceleration of the bicycle? (assume there is no friction.)
o a. 3.37 m/s2
b. 1.67 m/s2
c. 1.85 m/s2
d. 0.30 m/s2
Answer: D. 3.37m/s
Explanation:Just qnswerd iit