if you remove one haltere from a fly, it will fly straight up until it runs out of energy. group of answer choices true false

Answer:

the earthe would fly off into space in a straight line

The magnitude of the centripetal acceleration of the stopper, given that the rubber stopper has a mass of 16 grams is 1.9 m/s²

The centripetal acceleration can be obtained as illustrated by the following formula:

Centripetal acceleration = v² / r

Where

The following data were obtained where obtained from the question:

Centripetal acceleration = v² / r

Centripetal acceleration = (1.8)² / 1.7

Centripetal acceleration = 1.9 m/s²

Thus, the centripetal acceleration is 1.9 m/s²

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Answer:

In a two particle system, the center of mass lies on the center of the line joining the two particles.

Answer:

Motion

Explanation: Enjoy! :)

Answer:

By raising her center of mass just at the beginning of the arc, the skater gains energy and thereby increases her speed. Pumping on a skateboard in this way is closely related to pumping on a swing.

Explanation:

I hope this helps you!

(ps: can i plz have the brainlyest answer?)

Answer:

Sir Isaac Newton created law of gravity, Michał Borkowski, Tomasz Kraus, and Łukasz Haluch made Brainly

Explanation:

Answer:

Explanation:

:)

Speed will it strike the positive plate 74.736*10^6 m/s

r = distance = 3.7 mm

a) E = electric field between plates =

E =  38*10^-6  / 8.85*10^-12

   = 4.293*10^6 N/C

from E = -dV / dr

dV = potential difference .  take magnitude:

dV = E*dr

   = 4.293*106*3.7*10-3

   = 15.887 *103V

b) from F ( force) = q*E

also F = ma

so                 ma = qE

a( acceleration) = qE/ m

q = charge on electron, m= mass

a  = 1.6*10^-19*4.293*10^6 / 9.1*10^-31

a = 7.548*1017 m/s2

u = initial velocity = 0 m/s ( at rest)

V = final velocity= ?,           S = distance = r = 3.7 mm

v^2 = u^2+2as

putting values we get

Speed will it strike the positive plate 74.736*10^6 m/s

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Answer:

speed is increasing.

this is because the graph has a positive slope (due to it going up ), if it were decreasing, the graph would be going down

The speed of the object in the graph over the four seconds is increasing.

Speed is distance travelled by an object in unit time. A distance-time graph, also known as a distance-travel graph, is a graph that shows how an object's distance changes over time.A speed-time graph, often known as a speed curve, is a graph that shows how an object's speed changes over time.

Examining the speed-time and distance-time graphs for an entity that is at rest when time is zero and does not change speed will be our first step. The ensuing figure given in the question.

Given that in the question the graph has a positive slope as the line in graph is going up , if it were decreasing, the graph would be going down from this we conclude that speed of the object in the graph over the four seconds is increasing.

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Research methods and representativeness play a crucial role in scientific studies, and they are essential for drawing accurate conclusions.

As Oliver points out, issues such as selection bias, sampling methods, and the generalizability of findings can all impact the validity of research. In the case of the article about moneypox, it is essential to consider the representativeness of the sample, which was limited to individuals who sought healthcare.

This limitation could impact the accuracy of the reported incidence rates. Furthermore, it is important to acknowledge the deeply embedded systems, laws, and policies that influence research and its outcomes, such as funding biases or political agendas. Being aware of these factors is crucial for interpreting and contextualizing research findings.

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Answer:

For which the reasoning of the boy is correct for small heights, but as height increases his analysis is not correct.

Explanation:

The force of gravity comes from Newton's second law with the force the universal attraction

         F = ma

         F = \(G \frac{m_1 M}{(R_e +h)^2}\)

we substitute

          \(G \frac{m_1 M}{ (R_e+ h)^2}\) = m₁ a

where Re is the radius of the Earth 6.37 106 m

          a = \(G\frac{M}{R_e^2} \ ( 1 + \frac{h}{R_e})^{-2}\)

In general, the height is much less than the radius of the earth, therefore the term ha / Re is very small and we can use a series expansion leaving only the first fears.

             (1 + x)⁻² = 1 -2x + \(\frac{2 \ 1}{2!}\)  x²

we substitute

          a = g₀ (\(1 - 2 \frac{h}{R_e}\) )

with

         g₀ = \(G \frac{M}{R_e^2}\)

let's launch the expression.

* For small height compared to the radius of the earth we can neglect the last term

          g = g₀

* For height comparable to the radius of the Earth

          g = g₀  \((1 - \frac{2h}{Re} )\)

We see that the acceleration of gravity is decreasing.

For which the reasoning of the boy is correct for small heights, but as height increases his analysis is not correct.

The student's reasoning gone wrong when the analysis is undertaken for the increasing heights, to drop the object.

The given problem is based on the concept of gravity and gravitational force. The force of gravity comes from Newton's second law with the force the universal attraction as,

F = ma

\(F=G\dfrac{mM}{(R+h)^{2}}\\\\\\ma = G\dfrac{mM}{(R+h)^{2}}\)

Here, a is the linear acceleration, m is the mass of object, M is the mass of Earth, R is the radius of Earth and h is the height from where the objects will be dropped. Then,

\(a = \dfrac{GM}{R^{2}} \times(1+h/R)^{-2}\)

In general, the height is much less than the radius of the earth, therefore the term h/ R is very small, hence can be neglected.

\(a = \dfrac{GM}{R^{2}}\\\\a=g = \dfrac{GM}{R^{2}}\)

g is the gravitational acceleration.

For small height compared to the radius of the earth we can neglect the last term as,

a = g

And for the height comparable to radius of Earth,

\(a = \dfrac{GM}{R^{2}} \times(1+h/R)^{-2}\\\\a=g \times(1+h/R)^{-2}\)

Clearly, the acceleration of gravity is decreasing, for which the reasoning of the boy is correct for small heights, but as height increases his analysis is not correct.

Thus, we can conclude that the student's reasoning gone wrong when the analysis is undertaken for the increasing heights, to drop the object.

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Explanation:

mass(m)=95kg

gravity(g)=9.8m/s²

weight(w)=?

now,

w=m×g

=95×9.8

=931N

hope it helps.

Answer:

95x 0.9 = 85.5 is your answer

Explanation:

you multiply the number you have with the weight of the earth which is 0.9 and you will get 85.5

After 1.20 seconds, when the second object reaches that height, the two objects will collide at a height above the ground. This calculation is based on the assumption of negligible air resistance and the equations of motion for vertical motion.

To determine the height at which the two objects will first meet, we need to find the time it takes for the second object to reach the same height as the first object.

First, let's find the time it takes for the first object to fall from a height of 21.0 m. We can use the equation for vertical motion:

h = ut + (1/2)gt²

Where h is the height, u is the initial velocity (which is 0 m/s for free-fall), g is the acceleration due to gravity (approximately -9.8 m/s² for downward motion), and t is the time.

Plugging in the values, we have:

21.0 m = 0 + (1/2)(-9.8 m/s²)t²

Simplifying the equation, we get:

4.9t² = 21.0 m

t² ≈ 4.286

t ≈ 2.07 s

Now, since the second object is launched upward after 1.30 s, we need to find the time it takes for the second object to reach the same height. The time for the second object can be found using the equation:

h = ut + (1/2)gt²

Plugging in the values, we have:

h = 33.0 m/s * t + (1/2)(-9.8 m/s²)t²

Since the height h is the same as the height of the first object (21.0 m), we can set up the equation:

21.0 m = 33.0 m/s * t + (1/2)(-9.8 m/s²)t²

Rearranging the equation, we have:

4.9t^2 + 33.0t - 21.0 = 0

Solving this quadratic equation, we find two possible values for t: t ≈ -1.70 s and t ≈ 1.20 s. Since time cannot be negative, we discard the negative solution.

Therefore, the two objects will first meet at a height h above the ground when the second object reaches that height, which occurs at approximately 1.20 seconds.

In conclusion, By analyzing the free-fall motion of the first object and the upward motion of the second object, we found that the two objects will meet at a height above the ground when the second object reaches that height after approximately 1.20 seconds.

This calculation is based on the equations of motion for vertical motion and the assumption of negligible air resistance.

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Yes, an equipotential line of 5v and -5v can be drawn, both will have the same shape and no work will be done in moving the 1 nC charge along the equipotential line.

Q2) Yes, an equipotential line of 5V can be drawn.

Equipotential lines are defined as a set of points that have the same potential difference relative to another set of points. It can be drawn as a circle or a sphere with the charge as the center.

Q3) Yes, an equipotential line of -5V can be drawn.

For example, if there is a negative point charge at the origin, the equipotential line of -5V would be a sphere centered at the origin with a radius such that the electric potential on its surface is -5V.

Q4) No, the shape of the equipotential line will remain the same in both cases. It will still be a circle or a sphere depending on the position of the charge. The only difference is the value of the potential difference associated with the equipotential line.

Q5) How much work is needed to move a 1 NC charge halfway along the equipotential line?

When a charge is moved from one point to another along an equipotential line, no work is done by the electric field. This is because the potential difference between the two points is zero, so there is no potential energy difference between the two points. Therefore, no work is needed to move a 1 NC charge halfway along the equipotential line.

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Answer:

They are buried in the ground due to weathering and erosion

Explanation:

Answer:

They are buried in the ground due to weathering and erosion.

Answer:

Kepler refined the Copernican model. Orbits are not circles along which planets move at a constant speed, but ellipses, in the central focus of which is the Sun. The planet moves in an ellipse with a variable speed depending on the distance to the Sun. On this basis, Kepler significantly simplified the Copernican model and formulated the laws of planetary motion in their orbits.

The silver wire will be longer than the copper wire as the silver has the high expandability than the copper and not just that the silver is very good conductor for electricity but we use copper for wires cause of there cheap availability.

what is resistance?

The amount that an object impedes or resists in an electric current is referred to as resistance. Electric current is the flow of electrons. Consider an example of a person attempting to move from one shop to another in a busy market. This condition is eerily similar to an electron attempting to pass through a wire.

Resistance is the property of materials that allows electric current to flow. Resistance unquestionably resists the passage of current. Furthermore, the unit of resistance is ohms, which is symbolised by the Greek capital letter omega. Furthermore, resistance is affected by the voltage across a resistor as well as the current running through it. Resistance is a measure of the resistance to current flow in an electrical circuit.

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The frictional force between two bodies depends mainly on three factors: (I) the adhesion between body surfaces

(ii) roughness of the surface

(iii) deformation of bodies.

<3

Answer:

No

Explanation:

They aren't because 99% molecules that ARE the same all LOOK the same, and some of them have 2 white things, some have 1, and some i see even have 3. so i would definitely say that no, they aren't all the same

Racial Formations essay reading, race is defined as a socio historical concept.

According to the authors of the "Racial Formations" essay, race is a socio-historical concept that is constantly being constructed and reconstructed by society. This means that race is not a fixed biological category but a product of social, cultural, and historical processes that shape our understanding and interpretation of human differences. The authors argue that the concept of race is not based on any objective biological criteria, but rather on socially constructed ideas about physical and cultural differences that are used to justify power relations and social inequalities.

I agree with this definition of race as a socio-historical concept because it acknowledges that race is not a natural or biological phenomenon, but rather a product of human history and social relations. It recognizes that race is not something that is fixed or immutable, but rather something that is constantly being constructed and reconstructed by society through processes of racialization and racial formation. This perspective challenges the traditional biological concept of race, which assumes that human differences are based on fixed and immutable categories such as skin color, facial features, or genetic makeup.

In reality, race is socially constructed and can change over time and across different societies. For example, what is considered "black" or "white" in one society may be different in another, and what is considered "racial" in one context may not be in another. The social construction of race is also reflected in the way that racial categories are used to justify power relations and social inequalities, such as in the case of racial discrimination or racial profiling. In summary, race is a socio-historical concept that is shaped by society and culture, and it is important to recognize this in order to challenge racial discrimination and promote social justice.

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Answer:

Explanation:

The cars velocity is 14m/s. That means for every second, the car moves 14m. Now, if the car wants to reach 28m, going 14m/s, it will take 2 seconds for the car to reach 28m.

When the ball hits the ground after being thrown horizontally with a range equal to the height of the platform (h), the impact angle is 0°. The ball hits the ground directly below the point from which it was thrown.

To calculate the impact angle when the ball hits the ground, we can use the principle of projectile motion.

Let's consider the following variables:

h: Height of the platform from which the ball is thrown.

R: Range of the ball (which is also h in this case).

g: Acceleration due to gravity (approximately 9.8 m/s²).

θ: Impact angle when the ball hits the ground.

In projectile motion, the horizontal and vertical motions are independent of each other. The horizontal velocity remains constant throughout the motion, while the vertical motion is influenced by gravity.

We know that the time of flight for the ball can be calculated using the horizontal distance traveled (range) and the horizontal velocity (which is constant). The formula for the time of flight (T) is:

T = R / v₀

where v₀ is the initial horizontal velocity of the ball.

Since the ball is thrown horizontally, the initial vertical velocity (v₀y) is zero. The vertical displacement (h) can be calculated using the formula:

h = v₀yt - (1/2)gt²

Since v₀y is zero, the equation simplifies to:

h = - (1/2)gt²

Substituting the value of t from the time of flight formula, we get:

h = - (1/2)g (R / v₀)²

Solving for v₀, we get:

v₀ = √(gR² / 2h)

Now, to find the impact angle θ, we can use the formula:

tan(θ) = v₀y / v₀

Since v₀y is zero, we have:

tan(θ) = 0 / v₀

This implies that θ = 0°.

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Answer:

Electric field intensity (Option D)

Explanation:

Vector quantities have both magnitude and direction whereas scaler quantities have only magnitude

Electric field intensity is denoted by E

The formula is

\(\\ \rm\Rrightarrow E=\dfrac{F}{q}\)

Answer:

(d) Electric intensity

Explanation:

Answer:

My believe the answer is

A.) or B.)

Explanation:

Here is why I think A is the answer.

If we use the process of elimination, it would look like this,

a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.

This makes sense because we all know in winter the weather is very cold and freezing.

b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.

I feel like this answer is the question, but it could also be an answer, sorry, I'm a little uncertain.

c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.

This answer has nothing to do with the question, plus it is very false, our body heat is not enough to overcome the very cold temperature from outside.

d) Porque la temperatura del aire es igual a la temperatura del cuerpo.

This is false because again our body heat is not even compared to the freezing cold temperatures from the winter.

The angular velocity of gear B after A undergoes an angular displacement of 10 revolutions, measured counterclockwise, is 11.2 rad/s (counterclockwise) to three significant figures.

Angular displacement is a measure of the change in the position of an object that is rotating about a fixed axis. It is the angle through which an object has rotated, measured in radians or degrees, and is defined as the final angular position minus the initial angular position. Angular displacement can be positive or negative, depending on the direction of rotation, and is usually measured in radians.

First, let's convert the angular displacement of 10 revolutions to radians:

10 rev * 2π rad/rev = 20π rad

Next, we can use the following kinematic equation to solve for the final angular velocity of gear A:

ωf^2 = ωi^2 + 2αΔθ

where ωi is the initial angular velocity of gear A, α is the angular acceleration of gear A, and Δθ is the angular displacement of gear A.

Substituting the given values:

ωf^2 = (11 rad/s)^2 + 2(2 + (0.006 rad/s^2)^2)(20π rad)

ωf^2 = 121 + 0.072416(20π)

ωf^2 = 121 + 4.5513

ωf^2 = 125.5513

ωf = 11.214 rad/s

Now we can use the gear ratio to find the angular velocity of gear B. Let's assume that gear A and gear B have the same number of teeth, so the gear ratio is 1:1. The angular velocity of gear B is equal to the angular velocity of gear A:

ωB = ωf = 11.214 rad/s

Therefore, Gear B's angular velocity, measured anticlockwise after gear A has undergone an angular displacement of 10 revolutions, is 11.2 rad/s (anticlockwise), to three significant numbers.

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The correct option is 2. It is greater at higher temperatures, but only in the case of a moving observer and a stationary source. The Doppler effect is a change in the frequency of a wave caused by the relative motion of the source and observer.

This effect can be noticed in both sound waves and light waves. Sound waves require a medium for transmission and it is not applicable to vacuum. The frequency of the sound wave depends on the medium in which the wave is traveling. As the temperature of the medium increases, the speed of sound also increases. This means that the frequency of sound waves also changes, and hence the Doppler effect changes.

The Doppler effect is greater at higher temperatures but only in the case of a moving observer and a stationary source. The reason is that the temperature of the medium affects the speed of sound, but not the relative motion of the source and observer.

Therefore, option 2, which states that the Doppler effect is greater at higher temperatures, but only in the case of a moving observer and a stationary source.

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The statement is true, when the switch is closed electrons will flow.

Current can be defined as the rate of flow of charges or electrons in a given circuit.

Q = It

I = Q/t

where

A closed circuit is a type of circuit in which the wire connection of the circuit is complete and in which current flows.

Switch can be used close or open a circuit.

Thus, the statement is true, when the switch is closed electrons will flow.

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Answer:

A ramp

Explanation:

An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load. The inclined plane is one of the six classical simple machines defined by Renaissance scientists.

The statement that is true is that in turbulent flow, streamlines can begin or end at any point: streamlines are perpendicular to the velocity of the fluid at every point.

At any given point of time, when the flow of water is constant with respect of time then it is called streamline flow. Streamline flow occurs when there are sharp edge obstacles in the path of a fast-moving fluid. Streamline flow is explained by Pascal's principle. In steady flow, the liquid velocity at any particular point is the same. In steady flow of water, we can consider that the two layers of water cannot meet or merge with each other and it will flow continuously without any interruption. The high viscosity index number  of any fluid describes many things about that fluid like high viscosity number describes about the rigidity of that fluid with respect to the flowing area. Streamline flow of any fluid means its smooth flow after passing through a cut edge without disturbing its path.

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