what is ceres? what is ceres? a dwarf planet that orbits the sun in the kuiper belt beyond the orbit of pluto the first asteroid to have been visited by a spacecraft

Answer:

4.5 because just do the math and its 4.5

The equilateral triangle will come to rest in a stable equilibrium position when released from the initial position. The square has the smallest moment of inertia about the pivot point.

This is because the center of mass of the equilateral triangle is directly above the pivot point, while for the square and hexagon, the center of mass is off to one side. To determine which shape has the smallest moment of inertia about the pivot point, we can use the formula for the moment of inertia of a polygon about its centroid:

I = (n/12) * s² * h² * (1 + cos(2*pi/n))

where n is the number of sides, s is the length of each side, and h is the distance from the centroid to a side. For a regular polygon, the centroid is also the center of mass, so we can use the side length as the distance from the pivot point.

Plugging in the values for each shape,

Square: I = (4/12) * 1² * (1/2)² * (1 + cos(pi/2)) = 1/12

Hexagon: I = (6/12) * 2² * (√(3)/2)² * (1 + cos(pi/3)) = 2√(3)/3

Equilateral triangle: I = (3/12) * 3² * (√(3)/3)² * (1 + cos(2*pi/3)) = 9sqrt(3)/4

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--The complete question is, A square, a regular hexagon, and an equilateral triangle are pivoted about one of their vertices such that they can freely rotate in the plane. The sides of the shapes have lengths 1, 2, and 3 units, respectively. Which shape will come to rest in a stable equilibrium position when released from the initial position? Which shape has the smallest moment of inertia about the pivot point?--

Answer:

kinetic energy

Explanation:

Electrical energy is a type of kinetic energy caused by moving electric charges. The amount of energy depends on the speed of the charges – the faster they move, the more electrical energy they carry.

Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process.

Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process. There is no quick way to loose weight because the calories were added on gradually and must also be lost gradually.

Before and after photos does not show the loss in calories. This can only be determined by measurement.

Before you buy exercise equipment;

An example of an exercise equipment is a stationary bicycle. It works when you sit or stand on it and cycle repeatedly though it doesn't move. I am skeptical about it because it may not help you burn a lot of calories except you use it for long periods of time.

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The average speed in m/s of a person that jogs eight complete laps around a 400m track in a total time of 15.1 min is 0.44m/s.

Average speed of a moving body can be calculated by dividing the distance moved by the time taken.

Average speed = Distance ÷ time

According to this question, a person jogs eight complete laps around a 400m track in a total time of 15.1 min. The average speed is calculated as follows:

15.1 minutes in seconds is as follows = 906 seconds

Average speed = 400m ÷ 906s

Average speed = 0.44m/s

Therefore, the average speed in m/s of a person that jogs eight complete laps around a 400m track in a total time of 15.1 min is 0.44m/s.

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If the gravitational force between two massive spheres is 10 n and if the distance between the spheres is cut in half, the force between the masses is 40 N.

The gravitational force between two massive spheres can be calculated using the formula:

F = G *\((m_1 * m_2) / r^2\)

where F is the gravitational force between the spheres, G is the gravitational constant, \(m_1\) and \(m_2\) are the masses of the two spheres, and r is the distance between the centers of the two spheres.

If the distance between the two spheres is halved, the new distance between them is r/2.

Using the formula above, the new gravitational force between the spheres is:

F' = G * \((m_1 * m_2) / (r/2)^2\)

F' = G *\((m_1 * m_2) / (1/4)r^2\)

F' = 4 * G * \((m_1 * m_2) / r^2\)

Therefore, if the distance between the two massive spheres is cut in half, the gravitational force between the spheres increases by a factor of 4.

In this case, the new gravitational force between the spheres is 40 N.

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Answer:

When we can get the Kinetic energy from this formula KE= 1/2 M V^2and we can get the potential energy from this formula PE =  M g H

we can set that the kinetic energy at the bottom of the fall equals the potential energy at the top so, KE = PE

1/2 MV^2 = M g H

1/2 V^2 = g H

when V is the velocity, g is an acceleration of gravitational force (9.8 m^2/s) and H is the height of the fall (8 m).

∴ v^2 = 2 * 9.8 * 8 = 156.8

∴ v= √156.8 = 12.5 m/s

As Jeremy begins to push the box, if the force applied by Jeremy is greater that than the static frictional force, the box will move in the direction of the force applied by Jeremy.

According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.

In other words, when the force applied to an object overcomes the frictional force between the object and the horizontal surface, the object will accelerate in the direction of the applied force.

Consequently, as Jeremy begins to push the box, if the force applied by Jeremy is greater that than the static frictional force, the box will move in the direction of the force applied by Jeremy.

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The largest voltage the battery can have without breaking the circuit at the supports is 626.71 V.

The magnetic field on a current-carrying conductor is determined by the flow of current through the conductor and the distance from the carrier.

Voltage is the pressure exerted by an electrical circuit’s power source through a conducting loop to push charged electrons (“current”) through an electrical circuit to perform a function, such as turning on a light.

Given,

The length of the metal bar = 54.0 cm or 0.54 m

mass of the bar = 740 g or 0.74 kg

magnetic field acting perpendicular to the bar = 0.450 T

resistance  = 26.0

Let the maximum potential in the battery be V and the current in the circuit be I. So

V= IR

V = 26×I

I = V/21

For the rod to be in its position the magnetic force on the rod must be equal to the weight. So

magnetic force = weight

B×I×L = mg

0.45 × V/21 × 0.54 m =  0.74 × 9.8

V = 626.71 V

Thus the largest voltage the battery can have without breaking the circuit at the supports is 626.71 V.

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Answer:

Explanation:

A scalar quantity is a physical quantity that has only one characteristic - a numerical value.

The scalar value can be positive or negative.

Examples of scalar quantities: temperature, mass, volume, time, density.

A vector quantity is a physical quantity that has two characteristics:

1) a numerical value that is always positive (vector modulus);

2) direction.

Examples of vector physical quantities: speed, acceleration, force.

Answer:

Ventricular Fibrillation

Explanation:

it is measured bpm ( beats per minute ) of the cardiac muscles of the heart in a poor / disorderly working condition.

Answer:

velocity and final velocity (m/s)

Explanation:

The term "biomechanics of volleyball" describes the application of this science to the movements used in the sport.

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Answer:

A

Explanation:

It is deemed to be incorrect because velocity deals with displacement. Or in more simple terms, distance in a specified direction.

While moving round the track, the direction keeps changing, so to say and the velocity vector changes constantly.

Speed on the other hand, is a scalar quantity that doesn't bother about nor depends on the direction being taken by the car.

that's all, I hope you understand it all

Answer:

1.A

2.C

3.B

4. i.dk about that one

Explanation:

1. It is true that Tracking your exercise can help you stick with an exercise routine.

2. Yes, it is best to do as many different kinds of exercise as possible.

3. Building muscle strength helps with all aspects of fitness

4. Yoga would be the best exercise to achieve this goal.

Exercise is any activity that utilizes the physical movements of the body that improves a people's health, endurance, and wellbeing while lowering their chance of contracting illnesses. It enables the person to keep their body weight in a healthy weight range.

The benefits of fitness fluctuate depending on the sort of dying a person experiences. Even if a muscle is stretched, excessive sitting can cause a number of illnesses, many of which are fatal. The individual should engage in mobility activities as well as exercising to improve their stamina.

Thus, exercise is very necessary for health.

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When a body is positively charged, it implies that there is positive as well as negative charge in the body but the positive charge is more than negative charge.

Most of the materials that make up our world are composed of atoms, which are made up of a nucleus containing protons and neutrons surrounded by electrons. When an atom loses or gains electrons, it becomes positively or negatively charged, respectively. This is because the number of protons in an atom, which determines its atomic number and chemical properties, does not change.

When there are more protons than electrons, the atom becomes positively charged, and when there are more electrons than protons, it becomes negatively charged.Positive charge is the property of a material that has lost one or more electrons and therefore has more protons than electrons. Positive charges repel other positive charges, while negative charges attract positive charges.

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True. Thomas Edison was the first to create a portable motion picture camera and projection system in 1889.

The Kinetograph was the name of the first movie camera. It was the first camera that could capture moving images on a strip of film. George Eastman (later of Eastman Kodak Camera) created celluloid film in 1889, which was utilized in Edison's Kinetoscope and Kinetograph.

Edison developed the camera as well as its viewer and put on multiple demonstrations of his invention. The first still photographers, Joseph Nicephone Niepce and Louis Daguerre of France, were responsible for discovering the photographic principles upon which the camera was founded. His invention, known as the Kinetoscope, consisted of a camera, film, and projection system.

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Answer:

Move. It also determines the total amount of force put on an object

Explanation:

The question is incomplete, the complete question is;

The net force determines how and if an object will?

A) make a balanced force

B) change its mass

C) move or accelerate

When unbalanced forces act on an  object, the object moves  or accelerates. The correct answer is option C: move or accelerate

Force is considered as a push or pull. Unbalanced forces refers to a system of forces acting in opposite direction and are not equal in magnitude.

Unbalanced forces cause an object to move or accelerate in the direction of the larger force.

Hence, The net or resultant force determines how and if an object will move or accelerate when under the action of unbalanced forces.

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Answer:

its D

Explanation:

It is time when the moon completely covers the sun. So, the diagram that shows the earth moon and sun system arranged to cause a full solar eclipse is in option D.

A solar eclipse happens when the Moon moves in front of the Sun, blocking the Sun's light entirely or partially from a tiny portion of the Earth.

During the new moon phase of the eclipse season, when the Moon's circular plane is close to the Earth's orbital plane, such an alignment takes place around every six months.  

A total eclipse occurs when the Moon completely blocks out the Sun's disk. Only a portion of the Moon is covered by annular and partial eclipses.

In contrast to a total eclipse, which can be seen from any place on Earth's night side, a partial eclipse is only viewable from a fairly tiny portion of the globe.

Therefore, it concludes that option D in the figure shows the cause of the total solar eclipse.

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Answer:

36

Explanation:

2=24

24÷2=1

1=12

12*3=36

Ratio is from pigs to horses so:

Let no. of pigs be x

= 2:3 :: x:24

= 2/3 = x/24

= 2 × 24 = 3x

= 48/3 = x

= 16 = x

So the no. of pigs in farm - 16.

Field strength is 0.03234 N/kg. The formula to determine the field strength is given by:

F = mg Here, F is the field strength, m is the mass, and g is the gravitational field strength.

Substituting the values given: Weight = 0.96 N Mass = 3.3 g = 0.0033 kg = 9.8 m/s² Therefore, F = mg = 0.0033 kg × 9.8 m/s² = 0.03234 N the field strength is the gravitational force acting on a unit mass. It is measured in newtons per kilogram. The field strength is an expression of the strength of a gravitational field. In this case, the mass of the object is 3.3 g, which can be converted to kilograms by dividing by 1000.

The weight of the object is given as 0.96 N. Using the formula

F=mg, where m is the mass and g is the gravitational field strength, we can calculate the field strength as 0.03234 N/kg.

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Answer:

b. A vector may have either magnitude or direction.

Explanation:

Give me Brainliest if that helped! :)

(i) The generator delivers a greater rms current when only the resistor is present.

(ii) The greater average power is consumed by the circuit when both the inductor and the resistor are present.

The average power consumed in the inductor-resistor series circuit is 0.0216 A.

(i) In the case where both the inductor and the resistor are present, the generator delivers a greater rms current. This is because the presence of the inductor introduces reactance, which affects the overall impedance of the circuit. The reactance of an inductor is frequency-dependent, and since the generator has a frequency of 1160 Hz, the inductor will have a significant impact on the current flow. (ii) In the case where both the inductor and the resistor are present, the greater average power is consumed by the circuit. This is because the inductor introduces reactive power to the circuit, which does not contribute to useful work but rather oscillates between the inductor and the generator. Therefore, the combination of the resistor and the inductor results in a higher total power consumption compared to when only the resistor is present.

To calculate the average power consumed in the inductor-resistor series circuit, we need to determine the total impedance of the circuit and use it to calculate the average power.

Given:

Resistance, R = 495 Ω

Inductance, L = 0.085 H

Frequency, f = 1160 Hz

Average power consumed by the resistor, P_resistor = 0.25 W

First, we calculate the reactance of the inductor using the formula X_L = 2πfL:

X_L = 2π(1160 Hz)(0.085 H) ≈ 200.34 Ω

Next, we calculate the total impedance of the circuit using the resistance and reactance:

Z = √(R^2 + X_L^2) = √(495^2 + 200.34^2) ≈ 535.23 Ω

Finally, we can calculate the average power consumed in the inductor-resistor series circuit using the formula P = I^2Z, where I is the rms current:

P = I^2Z

0.25 W = I^2(535.23 Ω)

I^2 = 0.25 W / 535.23 Ω

I ≈ √(0.000468 A)

I ≈ 0.0216 A

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Answer:

electric stuff

Explanation:

I didn't see any option choices so srry

The magnitude of the average emf induced N= 220 in the coil is 4.10347 X 10⁻⁴ v.

Assume ,

N = 220

Area = 13 . 2 cm²

t = 4. 60 x 10⁻² sec

B = 6. 50 X 10⁻⁵ T

( a )

∅initial = NBA cosθ

=220 X 6 . 50 x 10⁻⁵ x 13 . 2 x 10⁻⁴x cosθ

1.8876X 10⁻⁵  T.m²

∅After= NBAcosθ

=220 X 6.50 x 10⁻⁵ x 13.2x 10⁻⁴x cob 90

( b )

∈=|-Δ∅B/Δt|

=1.8876 * 10⁻⁵/4. 60 x 10⁻²

=4.10347 X 10⁻⁴ v

An attribute of a mathematical object that determines whether it is bigger or smaller than other objects of the same kind is its magnitude or size. Formally speaking, an object's magnitude is the visible outcome of the class of objects it belongs to's ordered results.

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Answer:

The velocity of the crossbow as it recoils is 5 m/s. This can be calculated using the conservation of momentum. The momentum of the system before the bow was triggered is 0 (since the bow is stationary). After launching the bolt, the momentum of the system is (0.10 kg * 25 m/s), so in order for the momentum of the system to remain constant, the crossbow must recoil with a momentum of (5.0 kg * -5 m/s).

The reaction exhibited an exothermic reaction.

Considering the energy values: The energy of the resulting products is lower compared to that of the initial reactants, indicating the liberation of energy throughout the reaction. This exemplifies the characteristic behavior of an exothermic reaction.

Analyzing the shape of the graph: If we were to plot the energy of the reaction as a function of time, the graph would display a downward trajectory, signifying a decrease in the system's energy. This aligns with the typical features associated with an exothermic reaction.

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Complete question:

In a particular chemical reaction, the energy of the reactants is 30 kJ and the energy of the products is 5 kJ. The maximum energy of the system is 40 kJ.

D. Is this reaction endothermic or exothermic? Explain your answer in two ways: first, using the energy values, and second, by referring to the shape of the graph.

Answer:

Bismuth And Nitrogen

Explanation:

Because they have the same number of Valence Electrons

Answer:

There is nothing above oxygen but beneath there is sulfur as shown in the figure.

The mass and spring were pulled down 0.122 m from their original equilibrium position before being released.

Let's start by using Hooke's Law, which states that the force exerted by a spring is proportional to its displacement from its equilibrium position. Mathematically, we can express this as

F = -kx

where F is the force exerted by the spring, x is the displacement from the equilibrium position, and k is the spring constant.

We can use this equation to find the spring constant, k. We know that when a 2.0 kg mass is connected to the spring, the new equilibrium position is 5.0 cm lower. So, the displacement of the spring from its original equilibrium position is

x = 5.0 cm = 0.05 m

The force exerted by the spring is equal to the weight of the mass, which is

F = mg = (2.0 kg)(9.81 m/s^2) = 19.62 N

Using Hooke's Law, we can write

19.62 N = -k(0.05 m)

Solving for k, we get

k = -392.4 N/m

Now, let's consider the motion of the mass after it is pulled down and released. We know that at the equilibrium position, the net force on the mass is zero, so the kinetic energy of the mass is converted entirely into potential energy stored in the spring. Therefore, we can write

1/2 mv^2 = 1/2 kx^2

where m is the mass of the object (which we know is 2.0 kg), v is the speed of the mass when it passes the original equilibrium position (which we know is 2.1 m/s), x is the displacement of the spring from its original equilibrium position when the mass is released (which we want to find), and k is the spring constant (which we just calculated).

Plugging in the values we know and solving for x, we get

x = sqrt((mv^2)/k) = sqrt((2.0 kg)(2.1 m/s)^2/(392.4 N/m)) = 0.122 m

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