Answer:
B. Wechsler tests distinguishes between general and specific intelligence; Stanford-Binet tests did not.
Explanation:
One of the main differences between the Wechsler and Stanford-Binet tests is that the Wechsler tests distinguish between general and specific intelligence. This means that the Wechsler tests provide separate scores for different types of intelligence, such as verbal comprehension and perceptual reasoning, whereas the Stanford-Binet tests did not. Additionally, the Wechsler tests measure a wider range of abilities than the Stanford-Binet tests, including musical ability and memory. The Wechsler tests also do not use the concept of mental age, which was a key feature of the Stanford-Binet tests.
Lupus is a temporary disease that can be cured easily. True False
Answer:
falseeee
Explanation:
What is her velocity?
O 1.5 m/s
O 2 m/s
O 2.5 m/s
O 5 m/s
Answer:
C. 2.5
Explanation:
It said it was right, so that's cool.
Groups that play a pivotal role in the socialization process are called
A. master statuses.
B. aggregates.
C. secondary groups.
D. primary groups.
Answer:
Groups that play a pivotal role in the socialization process are called: primary groups.
Consider the circuit in Figure 5 with e(t) = 12sin(120pit) V. When S1 and S2 are
open, i leads e by 30°. When SI is closed and S2 is open, i lags e by 30°. When S1 and S2 are closed, i has an amplitude 0.5A. What are R, L, and C?
Based on the information, it should be noted that the resistance R is 0.5 Ω.
How to calculate the resistanceWhen S1 and S2 are open, i leads e by 30°. In this case, the circuit consists of only the inductor (L) and the capacitor (C) in series. Therefore, the impedance of the circuit can be written as:
Z = jωL - 1/(jωC)
Since i leads e by 30°, we can express the phasor relationship as:
I = k * e^(j(ωt + θ))
Z = jωL - 1/(jωC) = j(120π)L - 1/(j(120π)C)
Re(Z) = 0
By equating the real parts, we get:
0 = 0 - 1/(120πC)
Let's assume that there is a resistance (R) in series with the inductor and capacitor. The impedance equation becomes:
Z = R + jωL - 1/(jωC)
Z = R + jωL
Im(Z) = ωL > 0
Substituting the angular frequency and rearranging the inequality, we have:
120πL > 0
L > 0
This condition implies that the inductance L must be greater than zero.
When S1 and S2 are closed, i has an amplitude of 0.5 A. In this case, the impedance is:
Z = R + jωL - 1/(jωC)
Since the amplitude of i is given as 0.5 A, we can express the phasor relationship as:
I = 0.5 * e^(j(ωt + θ))
By substituting this phasor relationship into the impedance equation, we can determine the value of R. The real part of the impedance must be equal to R:
Re(Z) = R
Since the amplitude of i is 0.5 A, the real part of the impedance must be equal to 0.5 A: 0.5 = R
Therefore, the resistance R is 0.5 Ω.
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coefficient of the kinetic friction between the object and the surface (3) 3 Distance the object travels on the horizontal surface before it comes to a stop. (5
Based on the coefficient of kinetic friction, the object will travel a distance of approximately 37 meters before coming to a stop.
The correct option is C.
What is the distance traveled by the object?The distance an object will travel before coming to a stop can be calculated using the equation:
vf² = vi² + 2ad
where
vf is the final velocity (which is zero when the object comes to a stop)vi is the initial velocity,a is the acceleration, andd is the distance traveled.The acceleration of the object can be determined using the equation:
a = -μk * g
where
μk is the coefficient of kinetic friction andg is the acceleration due to gravity.Substituting the given values, we get:
a = -0.050 * 9.81 m/s²
a = -0.491 m/s²
Now we can use the first equation to solve for d:
0 = (6.0 m/s)² + 2(-0.491 m/s²)d
d = (6.0 m/s)^2 / (2 * 0.491 m/s^2)
d = 37 m
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Complete question:
An object is given an initial velocity of 6.0 m/s. The coefficient of kinetic friction between the object and the horizontal surface it slides across is 0.050. How far will the object travel before coming to a stop?
A) 19 m B) 25 m C) 37 m D) 57 m E) 102 m
Hannah tests her new sports car by racing with Sam, an experienced racer. Both start from rest, but Hannah leaves the starting line 1.00 s after Sam does. Sam moves with a constant acceleration of 3.50 m/s2, while Hannah maintains an acceleration of 4.90 m/s2. Find (a) the time at which Hannah overtakes Sam, (b) the distance she travels before she catches him, and (c) the speeds of both cars at the instant Hannah overtakes Sam.
Answer:
a) t = 6.46 s, b) x = 72.98 m, c) v₁ = 26.75 m / s, v₂ = 22.61 m / s
Explanation:
This is an exercise in kinematics, let's write the expressions for each person
Hanna
leaves a time t₀o = 1s after Sam's output, both with zero initial velocity and acceleration of a₁ = 4.90 m / s²
x₁ = 0 + ½ a₁ (t-t₀) ²
v₁ = 0 + a₁ (t-t₀)
Sam
with an acceleration of a₂ = 3.50 m / s² and with an initial velocity of zero
x₂ = 0+ ½ a₂ t²
v₂ = 0 + a₂ t
a) at the point where the position of the two is found is the same
x₁ = x₂
½ a₁ (t-t₀) ² = ½ a₂ t²
let's solve
t-t₀ = \(\sqrt{\frac{a_2}{a_1} }\) t
t (1 - \(\sqrt{ \frac{a_2}{a_1} }\)) = t₀
t = \(\frac{t_o}{ 1-\sqrt{ \frac{a_2}{a_1} } }\)
let's calculate
t = \(\frac{ 1}{1- \sqrt{\frac{3.50}{4.90} } }\)
t = \(\frac{1}{1- 0.845}\) 1 / 1- 0.845
t = 6.46 s
b) the distance traveled is
x = ½ a₂ t²
x = ½ 3.5 6.46²
x = 72.98 m
c) Hanna's speed
v₁ = 4.9 (6.46 -1)
v₁ = 26.75 m / s
sam's speed
v₂ = a2 t
v₂ = 3.50 6.46²
v₂ = 22.61 m / s
Drag the tiles to the correct boxes to complete the pairs.
Identify the type of potential energy described.
Tiles
gravitational
chemical
magnetic
elastic
electric
Answer:
those are all correct. The arrows are matched correctly
7. State condition of equilibrium when a borly is acted upon by a number of parallel forces. A uniform metal tube of length 5cm and mass 9 kg is suspended horizontally by two vertical wire attaches at 50cm and 150cm respectively from the ends of the tuber Find the tension in each wire. in tril Solution -
According to the question the tension in each wire is 1.96 N.
What is tension?Tension is a term that describes the psychological and physical state of a person or system in which there is a high degree of stress, uncertainty, and anxiety. It is often associated with conflict and is often experienced when individuals or groups feel threatened or constrained in some way. Tension can be experienced in a variety of different contexts, from interpersonal relationships to the workplace. It can result from a variety of different factors, including a lack of communication, conflicting goals or expectations, and unmet needs.
The body is in equilibrium when the sum of all forces acting on it is equal to zero. In this case, the forces acting on the metal tube are the two wires and the weight of the tube due to gravity.
The tension in each wire is equal to the weight of the tube divided by the length of the tube. This is because the tube is suspended horizontally, so the forces in each wire must be equal in order to keep the tube in equilibrium.
Therefore, the tension in each wire is:
T = (9 kg × 9.8 m/s2) / (5 cm × 0.01 m)
= 1.96 N
Therefore, the tension in each wire is 1.96 N.
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A rocket blasts off and accelerates upward from rest with a rate of 15.4 m/s2. Calculate the
distance it will rise in 22 seconds.
NEED HELP!!
From question we have,
Inital velocity(u) = 0Accleration(a) = 15.4 m/s²Time taken(t) = 22 secNow, from the second equation of motion;
s = ut + ½at² { where s = distance covered }Just put all the values provided in the question, in this equation;
s = ut + ½at²s = (0 × 22) + ½ × 15.4 × 22 × 22s = 15.4 × 11 × 22s = 15.4 × 242s = 3726.8 mTherefore, distance it will rise in 22 seconds will be 3726.8m
please use strictly python and only euler-cromer method
thank you
Answer:
Driven pendulum = 2.0 f =0.2 q =1.0
HELP ME HOW ARE BLACK HOLES FROMED
Answer:
Stellar black holes form when the center of a very massive star collapses in upon itself.
Answer:
A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star's outer layers are blown away.
Explanation:
This glass of lemonade is sitting in the hot summer sun. As time passes, in which direction will heat transfer take place?
The heat transfer takes place from the Ice to lemonade (ice → lemonade).
What is heat transfer?The term “heat transfer” refers to the movement of heat. The flow of heat across a system's boundary is due to a temperature differential between the system and its surroundings.
When a temperature difference exists between states of matter, heat transfer happens solely in the direction of decreasing temperature, that is, from a hot object to a cold item.
The temperature of ice is increasing while the lemonade is decreasing. Heat transfer happens solely in the direction of decreasing temperature,
Hence, the heat transfer takes place from the Ice to lemonade (ice → lemonade.
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Answer: C
Explanation:
creating a system to effectively solve problems can help you out in many ways. what are some benefits you would like to see in your own life as you begin to apply the 4 step problem solving process you read about this week
Creating a system to effectively solve problems is important as it helps an individual or organization to accomplish the goals and objectives.
The 4 step problem solving process is an important approach for effective problem-solving.The 4 step problem solving process involves the following steps:Identifying the problemGathering information and analyzing the problemIdentifying possible solutionsEvaluating and selecting the best solution to the problem.Some of the benefits that one would like to see in their own life as they begin to apply the 4 step problem solving process are as follows:1. Better decision-making skills: The 4 step problem solving process helps individuals to make better decisions in their personal and professional lives. The process helps an individual to evaluate all possible solutions before choosing the best solution to the problem.2. Effective time management: The 4 step problem solving process helps an individual to solve problems quickly and efficiently, leading to effective time management. It helps an individual to focus on the important aspects of the problem and make quick decisions.3. Improved communication: The 4 step problem solving process involves gathering information, analyzing the problem, and identifying solutions. It also involves communicating with others to get more information or to help evaluate solutions.
Effective communication skills are important in this process, and this can be improved through practicing the 4 step problem solving process.4. Improved problem-solving skills: The 4 step problem solving process helps individuals to develop better problem-solving skills, which is important in both personal and professional life. It helps an individual to think critically and creatively to identify the best possible solutions to a problem. This skill can be useful in various situations, including work, school, and personal relationships.
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The same amount of thermal energy was added to two equal masses of Aluminum and Iron. The specific heat of Aluminum is double the specific heat of iron. If the temperature of the Aluminum's mass changes by /\T, what is the change in the Iron's mass temperature?
Answer:
it is double the temperature change of iron
Why is it incorrect to say that astronauts are weightlesS in space while orbiting Earth in a space shuttle?
This is because Gravity exists everywhere in the universe.
What is Gravity?This is the force of attraction which acts on all matters in the universe. Astronauts appear weightless while in orbiting the Earth because the space shuttle and the astronauts are in free fall around it.
They fall at the same rate as the space shuttle which is why the astronauts appear weightless.
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Astronauts and their spaceship are affected by Earth's gravity in space. Even though Earth's gravitational influence is weaker in orbit than on Earth's surface, they have weight. They don't feel their weight since nothing's pushing back.
What is weightlessness in space?Weightlessness means no weight. It's also called zero-G. Weight is the force on a stationary object in a strong gravitational field.
The sensation of weightlessness that astronauts on board the International Space Station enjoy is due to the fact that they are free falling toward the planet Earth. Because the space station and the astronauts are moving at the same rate, there is no external normal force acting upon the body in free fall to balance out the effects of the body's own weight (equal to g).
Therefore, the astronauts and their spaceship continue to have mass and are still affected by the gravitational pull of the Earth.
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Waves can carry either ____ or __________ energy?
Answer:
ways can carry either __machanical___ or electromagnetic energy
An object is attached to a trolley with a 0.80 kg mass, which is then pushed into an identical trolley at a speed of 1.1 m / s. The two trolleys couple together and move at a speed of 0.70 m / s after the collision. Calculate the mass of the object.
The mass of the object is approximately 0.457 kg.
The mass of the object attached to the trolley can be calculated using the principle of conservation of momentum. Since the two trolleys couple together and move as a single system after the collision, the total momentum before and after the collision should be the same. Given the mass of one trolley is 0.80 kg and the initial speed is 1.1 m/s, the momentum before the collision is 0.80 kg * 1.1 m/s = 0.88 kg·m/s. After the collision, the total mass is the sum of the two trolleys, and the final speed is 0.70 m/s.
Using the momentum equation, the mass of the object can be calculated as follows:
Total momentum before collision = Total momentum after collision
0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s
Solving for the mass of the object, we get:
0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s
0.88 kg·m/s = 0.56 kg + 0.70 kg * mass of the object
0.88 kg·m/s - 0.56 kg = 0.70 kg * mass of the object
0.32 kg = 0.70 kg * mass of the object
Dividing both sides by 0.70 kg, we find:
mass of the object = 0.32 kg / 0.70 kg = 0.457 kg
The two trolleys collide and couple together, the total momentum before the collision is equal to the total momentum after the collision according to the principle of conservation of momentum.
The momentum of an object is defined as the product of its mass and velocity. In this case, the mass of one trolley is known (0.80 kg) and the initial speed is given (1.1 m/s), allowing us to calculate the momentum before the collision.
After the collision, the two trolleys move together at a new speed (0.70 m/s). By setting the initial momentum equal to the final momentum and solving for the unknown mass of the object, we can find its value.
In the calculation, we subtract the masses of the two trolleys from the total mass in order to isolate the mass of the object.
Dividing the difference in momentum by the product of the known mass and the new speed, we obtain the mass of the object. In this case, the mass of the object is approximately 0.457 kg.
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If an object accelerates at a rate of 3 m/s2, it will exert a force of 15 N. How much force will the same object exert if it accelerates at a rate of 7 m/s2 ?
If someone can answer this question they will get 100 points.
And not this: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Answer:
\(F=ma \\ m = \frac{F}{a} = \frac{15}{3} = 5kg \\ F = 5 \times 7 = 35N\)
Answer:35N
Explanation:If it goes 3 m/s 2 and the N is 15 and 3x5=15 then 7x5=35
A 20 Kg bike is moving at 6 m/s down a hill. What is the momentum of the bike?
Show your work
Answer:
\(\boxed {\boxed {\sf 120 \ kg*m/s \ down \ the \ hill}}\)
Explanation:
Momentum is the quantity of motion of a moving object. It is the product of mass and velocity.
\(p=mv\)
The mass of the bike is 20 kilograms. The velocity is 6 meters per second.
\(p= 20 \ kg * 6 \ m/s\)
Multiply.
\(p= 120 \ kg*m/s\)
Momentum is a vector quantity, so it has both magnitude and direction. The direction of the momentum is in the direction of the velocity. The velocity is down the hill, so the momentum is also down the hill.
The bike's momentum is 120 kg*m/s down the hill.
Explanation:
Newton's first law of motion states that every object will remain at rest or in uniform motion in a straight line unless acted upon by a net external force. In other words, when no net force acts on an object, the acceleration of the object is zero. Hence, the tendency of an object to resist any change in its velocity is known as inertia.
In an inertial reference frame (frame of reference in which Newton's first law of motion is true), mass is defined as a quantitative measurement of the concept of inertia, where the larger the mass of an object, the greater the inertia of the object (greater tendency to resist change in the state of motion).
Additionally, Newton's second law of motion, in his work Philosophiae Naturalis Principia Mathematica (1687), was originally defined as the rate of change of the momentum of a particle is equivalent to the net force acting on the particle and is in the direction of the force. This can be expressed as the differential equation
\(\vec{F}_{net} \ = \ \displaystyle\frac{d\textit{\textbf{p}}}{dt}\).
But what is momentum?
We know that a moving object has momentum. This is the tendency of the object to keep moving in the same direction unless acted on by an external force (do not confuse this with the definition of inertia). Simply put, momentum can be imagined as the quantitative measure of how "unstoppable" is an object in motion.
Formally, momentum, \(\textbf{\textit{p}}\), is defined as the product of the mass of an object and its velocity.
\(\textbf{\textit{p}} \ = \ m\textbf{\textit{v}}\).
Following the mathematical definition of momentum, the differential equation shown above can the be rewritten to yield the modern definition of the second law of motion that we know today,
\(\vec{F}_{net} \ = \ \displaystyle\frac{d(m \ \times \ \textit{\textbf{v}})}{dt} \\ \\ \vec{F}_{net} \ = \ m\displaystyle\frac{d\textit{\textbf{v}}}{dt} \\ \\ \vec{F}_{net} \ = \ m\textit{\textbf{a}}\)
Notice that momentum does not just depend on the object's mass (scalar quantity), but also the velocity (vector quantity) of the object in which it is traveling. Hence, the momentum of an object is also dependent on its direction, implying that momentum changes when
The speed of the object changesThe direction of the object changes.
To calculate the momentum of the bike, substitute the known quantities into the formula of momentum.
\(\textbf{\textit{p}} \ = \ (20 \ \text{kg})(6 \ \text{m s}^{-1}) \\ \\ \textbf{\textit{p}} \ = \ 120 \ \text{kg m s}^{-1}\)
how does mass relates to latent heat?
The mass of a substance is not directly related to latent heat. Instead, latent heat is a parameter that describes the amount of energy required or released during a phase shift of a substance.
What is latent heat?Latent heat can be thought of as hidden energy that is supplied or extracted to change the state of a substance without changing its temperature or pressure.
Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process—typically a first-order phase transition.
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Lithium an element in group 1. What element is below Lithium in the same group
Answer:
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Explanation:
Hope it helps! Correct me if I am wrong :>
AYUDA!!!!!
Si 300 cm de alcohol tienen una masa de 237 g
calcular:
a) El valor de su densidad expresada en g/cm'y en kg/m?
b) su peso específico expresado en N/m?
Answer:
a) El valor de la densidad es 0.79 \(\frac{g}{cm^{3} }\) o 790 \(\frac{g}{cm^{3} }\)
b) El peso especifico es 7749.9\(\frac{N}{m^{3} }\)
Explanation:
a) La densidad se define como la propiedad que tiene la materia, ya sean sólidos, líquidos o gases, para comprimirse en un espacio determinado. En otras palabras, la densidad es una magnitud que permite medir la cantidad de masa que hay en determinado volumen de una sustancia. Entonces, la expresión para el cálculo de la densidad es el cociente entre la masa de un cuerpo y el volumen que ocupa:
\(d=\frac{m}{V}\)
En este caso:
masa= 237 g= 0,237 kg (siendo 1000 g= 1 kg)volumen= 300 cm³= 0,0003 m³ (siendo 1 cm³= 0,000001 m³)Reemplazando:
\(d=\frac{237 g}{300cm^{3} }\) → d=0.79 \(\frac{g}{cm^{3} }\)
\(d=\frac{0,237 kg}{0,0003m^{3} }\)→ d=790 \(\frac{g}{cm^{3} }\)
El valor de la densidad es 0.79 \(\frac{g}{cm^{3} }\) o 790 \(\frac{g}{cm^{3} }\)
b) El peso específico es la relación existente entre el peso y el volumen que ocupa una sustancia en el espacio.
Entonces, en este caso, siendo el peso:
P= m*g= 0,237 kg* 9,81 \(\frac{m}{s^{2} }\)= 2,32497 N
el peso especifico es calculado como:
\(Pe=\frac{Peso}{Volumen}= \frac{2,32497N}{0,0003 m^{3} }\)
Pe= 7749.9\(\frac{N}{m^{3} }\)
El peso especifico es 7749.9\(\frac{N}{m^{3} }\)
HELP PLEASEEEEEE HELP PLEASE
The letter that represents the various descriptions is as follows:
5.) Angle of incidence: B
6.) Object: D
7.) Plain mirror:A
8.) Reflection: E
9.) Angle of reflection: C
10.) Normal: F
How does the diagram explain the law of reflection?The law of reflection in a plain mirror states that the angle of reflection is equal to the angle of incidence.
The diagram explains the law of reflection on a plain mirror because it shows the reflection of the object D as E after creating an angle of incidence B on the plane mirror surface A which is equal to the angle of reflection C.
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The coefficient of static friction between a 3.00 kg crate and the 35.0o incline is 0.300. What minimum force F must be applied perpendicularly to the incline to prevent the crate from sliding down
Answer:
So the minimum force is
32.2Newton
Explanation:
To solve for the minimum force, let us assume it to be F (N)
So
F=mgsinA
But
=>>>> coefficient of static friction x (F + mgcosA
=>3 x 9.8 x sin35 = 0.3 x (F + 3 x 9.8 x cos35)
So making F subject of formula
F + 24.0 = 56.2
F = 32.2N
how much power does a kid have when they pull their wagon with 720 joules of work for 160 seconds?
Obtained by multiplying (60 watts) x (120 seconds) to get 7200 Joules, which is the amount of energy a 60W light bulb uses in that time.
The most widespread use of this formula is for electricity, however it can be used for any watt-measured power. The watt (W), which is equivalent to a joule per second (J/s), represents a system's power in terms of work per time. The daily equivalent of 6.27 106 joules is 1500 calories, which the average person consumes daily.
This is roughly equivalent to the energy needed to drive a cars for 15 minutes. When a child pulls a wagon horizontally, the waggon accelerates. According to Newton's third law, the youngster is subject to an equal and opposing force from the wagon.
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7. A tennis ball thrown horizontally from the top of a water tower lands 20.0 m from the base of the tower. If the tennis ball is initially thrown at a velocity of 10.0 m/s: (a) how long does it take the tennis ball to reach the ground? (b) how high is the water tower? (b) how far away was the golfer from the hole when he hit the ball? A championship goffer uses a nine iron to chip a shot right into the cup. If the golf ball is launched at a velocity of 20m / s at an angle of 60 deg above the horizontal: (a) how long was the ball in the air? (c) what maximum height did the ball reach?
Time taken by the tennis ball to reach the ground is 1.23 second, if the initial velocity is 10.0 m/s.
Velocity is the time price at which an object is transferring alongside a route, even as the pace is the fee and path of an item's motion. put some other manner, velocity is a scalar price, at the same time as velocity is a vector.
Speed is the speed at which something moves in a particular direction. for instance as the rate of a car traveling north on a motorway, or the rate a rocket travels after launching. In a scalar way, absolutely the value magnitude of the velocity vector is continually the velocity of the motion.
Speed is a vector expression of the displacement that an item or particle undergoes with appreciation to time. the standard unit of speed magnitude (also known as velocity ) is the meter consistent with 2nd (m/s).
The top of a water tower lands 20.0 m
initial velocity = 10.0 m/s
time required to reach the ground =
S = ut + 1/2 at²
20 = 10t + 5t²
t = 1.23 second
The water is at a height of 20 m.
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Which of the following X-Y tables agrees with
the information in this problem?
A)
Vi
Vf
a
ΔΧ
t
A plane is flying east at 115 m/s. The wind
accelerates it at 2.88 m/s² directly northwest.
After 25.0 s, what is the velocity of the plane?
X
115
?
Y
115
?
88 2.88
2.88
25
25
B) X
V₁
Vf
a 2.04 2.04
ΔΧ
t
Y C) X
V₁ 115
V₁
?
0115
25
25
a -2.04
ΔΧ
t
25
Y
0
?
2.04
25
Table A agrees with the information in the problem. After 25.0 seconds, the velocity of the plane is 187 m/s.
Based on the given problem, we need to determine the velocity of a plane after 25.0 seconds. The plane is initially flying east at a velocity of 115 m/s, and it experiences an acceleration of 2.88 m/s² in the northwest direction.
Let's analyze each option and calculate the final velocity (Vf) of the plane after 25.0 seconds:
Option A:
Vi = 115 m/s
a = 2.88 m/s²
t = 25.0 s
Using the equation Vf = Vi + at, we can calculate:
Vf = 115 m/s + (2.88 m/s²)(25.0 s) = 115 m/s + 72 m/s = 187 m/s
Option B:
V₁ = 2.04 m/s
a = 2.04 m/s²
t = 25.0 s
Using the equation Vf = V₁ + at, we can calculate:
Vf = 2.04 m/s + (2.04 m/s²)(25.0 s) = 2.04 m/s + 51 m/s = 53.04 m/s
Option C:
V₁ = 115 m/s
a = -2.04 m/s²
t = 25.0 s
Using the equation Vf = V₁ + at, we can calculate:
Vf = 115 m/s + (-2.04 m/s²)(25.0 s) = 115 m/s - 51 m/s = 64 m/s
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I don't know the correct answer. Can you help?
The dielectric strength of the dielectric is closest to 2500 kV/m.
How to find dielectric strength of the dielectric?The capacitance of a parallel plate capacitor is given by:
C = εA/d
where ε is the permittivity of the dielectric, A is the area of each plate, and d is the distance between the plates.
In this case, the capacitance is given as 2000 pF, or 2 x 10^-9 F. The area of each plate is (80 x 10^-3 m) x (80 x 10^-3 m) = 6.4 x 10^-3 m^2. The distance between the plates is 0.20 x 10^-3 m.
Plugging in these values to the equation above, we get:
2 x 10^-9 F = ε(6.4 x 10^-3 m^2)/(0.20 x 10^-3 m)
Solving for ε, we get:
ε = (2 x 10^-9 F)(0.20 x 10^-3 m)/(6.4 x 10^-3 m^2)
ε = 6.25 x 10^-12 F/m
The dielectric strength of a material is defined as the maximum electric field that the material can withstand before breaking down. The voltage rating of the capacitor is 500 V, so the electric field between the plates is:
E = V/d = 500 V/(0.20 x 10^-3 m) = 2.5 x 10^6 V/m
To convert this to kV/m, we divide by 1000, giving:
E = 2.5 x 10^3 kV/m
Therefore, the dielectric strength of the dielectric is closest to 2500 kV/m.
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why is a mountain ? what is a animal ? what is love ?
Answer:
When we love someone we experience the same positive thoughts and experiences as when we like a person. But we also experience a deep sense of care and commitment towards that person. Being “in love” includes all the above but also involves feelings of sexual arousal and attraction.
Explanation:
As thermal energy is added to a sample of water, the potential energy of its
molecules increases, and then the kinetic energy of its molecules increases.
Which sections of the heating curve illustrate this process?
Temperature (°C)
200
150-
100
50
0
7
-50-
0
A
T
10
T
20
с
B
T
30
40
Time (min)
A. B followed by D
B. C followed by B
C. A followed by B
D. B followed by C
50
60
D
70
As thermal energy is added to a sample of water, the potential energy of its molecules increases, and then the kinetic energy of its molecules increases.
The sections of the heating curve illustrate this process is B followed by D
Therefore option A is correct.
What is thermal energy?Thermal energy (also called heat energy) is described as being produced when a rise in temperature causes atoms and molecules to move faster and collide with each other.
some factors of thermal energy include:
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