to determine the mass of the central object, we must apply newton's version of kepler's third law, which requires knowing the orbital period and average orbital distance (semimajor axis) for at least one star. we could consider any of the stars shown in the figure, so let's consider the star with the highlighted orbit (chosen because its dots are relatively easy to distinguish). what is the approximate orbital period of this star?

Answer: Neap tides

Explanation: Neap tides are tides that have the smallest tidal range, and they occur when the Earth the Moon, and the Sun form a 90o angle. They occur exactly halfway between the spring tides when the Moon is at first or last quarter.

In order to properly configure the smart light bulbs, buyers should read the installation and configuration manual before connecting or using them to avoid possible damage due to improper handling.

The user manual is a tool that is usually included when we buy a product. This manual includes all the characteristics of the object that we have purchased and the recommendations and specifications for correct use and maintenance to prolong its useful life.

According to the above, what the common buyer should do to prevent their bulbs from being damaged and to be able to configure them properly is to read the user manual.

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Answer:

Newton's Second laws of motion

Explanation:

This law states that the force acting on an object is directly proportional to its mass and the acceleration produced.

Newton's laws of motion provided a unified framework to understand and describe the motion of objects. They introduced the concept of force and explained how forces affect the motion of objects. Newton's laws revolutionized the field of physics by providing a solid foundation for studying and predicting the behavior of objects in motion.

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Answer:

pressure=force/area

=10/2

5

Explanation:

Answer:

5pa

Explanation:

f=10n

area = 2m²

now,

pressure= f/a

= 10/2

=5 pa

A fully charged HV battery should show voltage levels to within 3% of specifications.

A High Voltage (HV) Battery is an electric vehicle's most crucial component. HV batteries are responsible for propelling electric cars by producing power. As a result, a fully charged HV battery should display voltage levels to within 3% of the specifications to provide maximum performance and lifespan. The voltage levels of the HV battery are monitored by the Battery Management System (BMS) (BMS).The Battery Management System (BMS) (BMS) is the electric vehicle's computerized system that monitors the battery's performance, safeguards it against damage, and informs the driver of any system issues. The BMS uses voltage and current sensors to monitor the battery's state of charge and power output in real-time. The Battery Management System (BMS) calculates the battery's available power and energy and its state of charge based on the monitored data.The Voltage level of a battery shows the strength of the battery. If a battery's voltage level is low, it means that the battery is weak and will not last long. Therefore, a fully charged HV battery should show voltage levels to within 3% of specifications to provide the best performance and lifespan. Any deviation from this range will decrease the battery's overall performance and lifespan.

A fully charged HV battery should show voltage levels to within 3% of the specifications to provide maximum performance and lifespan. The Battery Management System (BMS) monitors the voltage levels of the battery to ensure that it is functioning correctly. If the battery's voltage level is below the specified range, it will impact the battery's overall performance and lifespan.

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The sum of work done on the mass by the applied force F and the gravitational force is 126.33 J

To find the sum of work done on the mass by the applied force F and the gravitational force, we need to calculate the change in gravitational potential energy (Wg) and the change in mechanical energy (Wapp) of the mass.

First, we need to find the force exerted by the gravitational force on the mass, which is given by:

Fg = mg = (29 kg) * \((9.81 m/s^2)\) = 286.7 N

Next, we need to find the change in gravitational potential energy of the mass, which is given by:

ΔWg = mgh = (29 kg) *\((9.81 m/s^2)\)* (4.3 cm) = 114.8 J

To find the change in mechanical energy of the mass, we need to find the work done by the applied force on the mass, which is given by:

Wapp = F * d = F * (4.3 cm) = 11.53 J

Finally, we can add the change in gravitational potential energy and the change in mechanical energy to get the sum of work done on the mass:

Wapp + Wg = 11.53 J + 114.8 J = 126.33 J

Therefore, the sum of work done on the mass by the applied force F and the gravitational force is 126.33 J

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Answer:

The trebuchet was invented in France and was first reported to be used in 1124AD in the siege of Tyre (in present-day Lebanon) during the Crusades. As it was much more powerful than a catapult, a trebuchet became the siege weapon of choice.

Explanation:

Most people think that the trebuchet is a medieval weapon, but actually, it has its origins in ancient China. The ancient Chinese trebuchet could throw huge boulders up to 250 pounds, a distance of 200 feet. In addition, it was lightweight and mobile which was crucial as it could be moved around the battlefield with ease. The thing I love about the chinese trebuchet is that it pushes the boundaries of ancient engineering to create a ballistics revolution - a flexible, portable, killing machine.

Therefore, the launch speed needed to hit the bull's-eye is approximately 21 m/s.

When the pumpkin is thrown horizontally, what is the launch speed needed to hit the bull's-eye?If the pumpkin is thrown horizontally, then its initial horizontal velocity should be equal to the velocity required to hit the bull's-eye. Let's try to solve it:According to the kinematic equations,v_f = v_i + atIn the y-direction, a = -9.8 m/s² (acceleration due to gravity), but since the pumpkin is thrown horizontally, its initial velocity in the y-direction is zero. So in the y-direction, the equation becomes:y = v_i t + 1/2 a t²... (1)Since we need to find the horizontal velocity, let's focus on the x-direction. We know that there is no acceleration in the x-direction.

Therefore, the kinematic equation becomes:x = v_i t... (2)Now, let's calculate the time it takes for the pumpkin to hit the bull's-eye. To do this, we can use equation (1), but we need to replace y with the height of the bull's-eye above the ground. We don't have the value of the height, but we can assume it to be negligible (i.e., zero). So equation (1) becomes:0 = v_i t + 1/2 (-9.8) t²Multiplying both sides by 2, we get:-9.8 t² = -2 v_i t... (3)Simplifying equation (3), we get:t = 2 v_i / 9.8... (4)Substituting equation (4) into equation (2), we get:x = v_i (2 v_i / 9.8)x = (2/9.8) v_i²... (5)Now, we know that the distance to the bull's-eye is 90 m. So we can equate x with 90 and solve for v_i:v_i² = (9.8/2) xv_i² = (9.8/2) (90)v_i = √(9.8 x 45)v_i ≈ 21 m/s

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To answer this question, you need to understand the law of conservation of energy. Essentially, the law states that energy cannot be created or destroyed; it is always conserved.

Knowing this law, how can we answer this question? Well, let's look at what the question tells us. We know that Blackie was initially at the top of a refrigerator before rolling over and falling to the ground. At ground level, he only has Kinetic energy when he lands. Since we know that he started at the top of the fridge, we know that Blackie started off with potential gravitational energy.

That would make sense, right? Written out as an equation, it'd be:

\(U_{g}\) = \(K_{E}\)

This follows the law of conservation of energy, as all the potential gravitational energy is converted into Kinetic energy.

Now, we know what energies are converted. What can we do with it? Recall the equation of potential gravitational energy:

\(U_{g}\) = \(F_{g}\)∆H

\(U_{g}\) = mg∆H

Do you see it now? ∆H is the distance that Blackie falls, and since Blackie jumps from the fridge to the ground, ∆H must be the height of the fridge!

Let's start solving for ∆H:

\(U_{g}\) = \(K_{E}\)

Substitute potential gravitational energy with our equation:

mg∆H = \(K_{E}\)

We were given the value of Kinetic Energy:

mg∆H = 90

Isolate ∆H by dividing both sides by mg:

∆H = \(\frac{90}{mg}\)

Input values for 'm' and 'g' (m is the mass of Blackie and g is Earth's acceleration)

∆H = \(\frac{90}{6*9.80}\)

∆H = \(\frac{90}{58.8}\)

∆H = 1.53

The refrigerator is 1.53 meters tall.

And that's it! Let me know if you need me to explain anything I did here.

- breezyツ

The words experiences in Niels Bohr's life that led to his interest in science and the study of the atom is he disliked writing essays and talented in mathematics.

Atom is the smallest unit of the element. Different elements have different size atoms and same element have same size atoms.

Neil Bohr loved talking, he had a disliking of writing essays. He was talented in mathematics. He then attracted to the sciences. Physics  interested Neil and when he was a teenager, he started correcting the mistakes in his school's textbooks.

The contributions are present in the modern atomic model. They are: All matter consists of atoms. Atoms of the same element are the same in size and atoms of different elements are different. Atoms combine in whole-number ratios to form compounds.

Thus, Physics interested him to further study for atom.

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The upward force, or buoyancy, acting on an object in water is equal to the weight of the water displaced by the object. All objects in water have a buoyant force that pushes them against gravity.

Buoyancy is produced by the pressure that a liquid exerts on an object. Pressure increases with depth, so the pressure on the bottom of the object will always be greater than the force on the top, resulting in a net upward force. Buoyancy exists whether an object is floating or submerged.

This is the hydrostatic pressure that acts to balance the concentration of water on both sides of a membrane that is impermeable to substances dissolved in water. Water moves along a concentration gradient. In fluid mechanics, displacement occurs when a large part of an object is submerged in a fluid.

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Galileo Galilei astronomer designed scientific instruments, including a new kind of thermometer, an improved compass, and a more powerful telescope.

Study on planets, asteroids, and other celestial bodies is done by astronomers. They use both space- and ground-based technologies, including as telescopes like the Space Telescope Hubble. Some astronomers study distant galaxies as well as things such as pulsars and black holes.

Astronomy, atmospheric science, physics, and astrobiology, the study of space biology, are some of the scientific fields that are the most likely to lead to employment at Space agency. NASA uses 15 different types of scientists, demonstrating the significance of scientists from all specialities in space exploration.

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To transfer a satellite from a circular orbit to an elliptical orbit, the rocket motor must do work equal to the change in the satellite's potential energy. This is because the potential energy of the satellite is directly related to its distance from the center of the planet.

As the satellite moves from a circular orbit to an elliptical orbit, its distance from the center of the planet changes, which results in a change in its potential energy.

The amount of work required to change the potential energy of the satellite can be calculated using the following formula: Work = ∆PE = GMm(1/a - 1/b), where G is the gravitational constant, M is the mass of the planet, m is the mass of the satellite, a is the initial radius of the circular orbit, and b is the maximum radius of the elliptical orbit.

Therefore, the rocket motor must do work equal to GMm(1/a - 1/b) to transfer the satellite from the circular orbit to the elliptical orbit.

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Answer:

The angle between two forces is 165 degrees.

Explanation:

We have,

Force 1, \(F_1=27\ N\)

Force 2, \(F_2=30\ N\)

Resultant of two forces, F = 8 N

It is required to find the angle between two forces. The resultant of two force is given by the formula as follows :

\(F=\sqrt{F_1^2+F_2^2+2F_1F_2\cos\theta}\)

\(\theta\) is the angle between F₁ and F₂

So,

\(F^2=F_1^2+F_2^2+2F_1F_2\cos\theta\\\\\cos\theta=\dfrac{F^2-F_1^2-F_2^2}{2F_1F_2}\\\\\cos\theta=\dfrac{(8)^2-(27)^2-(30)^2}{2\times 27\times 30}\\\\\cos\theta=-0.966\\\\\theta=\cos^{-1}\left(-0.966\right)=165^{\circ}\)

So, the angle between two forces is 165 degrees.

When the gold cube is immersed in mercury, the tension in the string in Newtons is 3.142N.

Tension is the force acting on the linear object like string, chain or rope due to pulling.

Volume of gold V = mass / density

V = 1.18 /19.3x 10³ =61.1 x 10⁻⁶ m³

Tension in the string after immersing will be

T = [ρ(Gold)  -ρ(Hg)] g. V

T =[ 19.3x 10³ - 13.6 x 10³] x 9.81 x 61.1 x 10⁻⁶

T =3.416 N
Thus, the tension in the string is 3.42 N.

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The Lorentz Force equation states that a charged particle moving in a magnetic field experiences a force that is perpendicular to both the direction of the magnetic field and the direction of motion of the particle. This force is given by F = q(v x B), where F is the force, q is the charge of the particle, v is the velocity of the particle, and B is the magnetic field.

When a charged particle moves at a constant speed in a direction perpendicular to a uniform magnetic field, it experiences a force that is always perpendicular to its direction of motion. This force causes the particle to move in a circular path, as it continuously changes direction but maintains the same speed.

The centripetal force required to keep the particle moving in a circle is provided by the magnetic force, as the force acts perpendicular to the direction of motion and towards the center of the circle. This allows the particle to continue moving in a circle at a constant speed, as long as the magnetic field remains uniform and the particle's velocity remains perpendicular to it.

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Answer:

1. Amplitude.

2. Rarefaction.

3. Wavelength.

4. Compression.

Explanation:

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission. Some of the properties of sound waves as it travels through a medium such as solid, liquid and gas includes the following;

1. Amplitude: the density of the medium's particles at the compressions of the waves.

2. Rarefaction: the part of a wave where the particles of the medium are farther apart. This ultimately implies that, it is part of a longitudinal wave in which the particles that make up the matter for the movement of the wave are separated by a greater distance.

3. Wavelength: the distance between compressions or rarefactions i.e the distance between two successive compressions or refractions.

4. Compression: the part of a wave where the particles of the medium are closer together. This ultimately implies that, it is part of a longitudinal wave in which the particles that make up the matter for the movement of the wave are closer together.

Answer:

here is the answers .......

A golf ball with a mass of 0.050 kg is at rest on the tee and accelerates to 102 m/s as soon as it is struck. The average force applied to the ball if the club and ball made contact for 0.94 ms is 6.3 kN.

Impulse is a term used to describe how a net force—a specific type of "moving force"—affects an object. An impulsive force is a strong force that acts quickly to cause a finite change in momentum. Impulsive forces were conceptualized separated from regular forces throughout science history.

Force times time equals change in momentum for an impulse.

F = mv/t

F = (0.050 kg)(102 m/s) / 0.81 ms × 10⁻³ = 6.3 kN

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As four students designed and built air propelled rockets that were launched into the air. their data are recorded in the table, Rocket 3 had the greatest acceleration. The correct option is C.

The rate at which an object's velocity changes over time is measured by the physical quantity known as acceleration. It is calculated by dividing the change in time by the change in velocity.

To see the rocket that has the greatest acceleration, first we need to calculate the acceleration for all given rockets.

We know that,

Acceleration = Net Force / Mass

So,

Rocket 1: Acceleration = 12.0 N / 0.526 kg

                                      = 22.83 m/s²

Rocket 2: Acceleration = 8.0 N / 0.426 kg

                                       = 18.78 m/s²

Rocket 3: Acceleration = 12.0 N / 0.515 kg

                                      = 23.30 m/s²

Rocket 4: Acceleration = 8.0 N / 0.477 kg

                                       = 16.75 m/s²

As per this, one can see that the acceleration is greatest for rocket 3.

Thus, the correct option is C.

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Your question seems incomplete, the probable complete question is:

Answer:

34.27 is the answer

A book falls off of a \displaystyle 2.2m high    table. If the book weighs \displaystyle 0.75kg, what will its    final velocity be right before it hits the ground?

The value of x in the given right triangle in a semicircle is determined as 21.

The triangle in a semicircle is always a right angle triangle.

From the figure shown, we can say that the triangle  G J K is right triangle and m<K = 90degrees.

Given that m<K = 4x + 6, we will can use the following equation to find the value of x as shown:

4x + 6 = 90

4x = 90 - 6

4x = 84

x = 21

Thus, the value of x in the given right triangle in a semicircle is determined as 21.

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Answer:

6000 kilometers

Explanation:

multiply the length value by 1000

Answer:

6000

Explanation:

Each Kilometer is 1000 meters.

If there are 6 kilometers, then this will convert to 6000 meters.

Basically, all you have to do is x (times) the kilometer by 1000 to get the meter.

Hope this helped!

The angular momentum of a 1kg rock held in place by against the inside wall of the rotating drum can be calculated using the formula L = mvr⊥, where L is the angular momentum, m is the mass, v is the linear velocity and r⊥ is the perpendicular radius from the axis of rotation to the line of motion of the rock. In this case, r⊥ is equal to the radius of the drum, which is 0.2 meters. The linear velocity can be found by multiplying the angular velocity by the radius, i.e. v = ωr. The angular velocity can be obtained by dividing 2π by the period of rotation, i.e. ω = 2π/T. Therefore, the angular momentum of the rock is:

If the period of rotation is 15 seconds, then the angular momentum of the rock is:

In physics, momentum or center is a quantity related to the speed and mass of an object.

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The functioning of a radio obeys the energy conservation principle, the energy is conserved throughout the process of transmitting sound waves.

Radio is a device that receives and broadcasts electromagnetic waves in the radio frequency (RF) range. The energy conservation principle states that energy can neither be created nor destroyed, but it can be converted from one form to another. This principle applies to the functioning of a radio, where the energy is conserved throughout the process.

When a radio receives a signal, it converts the electromagnetic wave energy into an electrical signal using an antenna. The electrical signal is then amplified and demodulated to extract the original audio signal. The audio signal is then amplified again and played through a speaker, where the electrical energy is converted into sound energy. The energy that was originally present in the electromagnetic wave is conserved throughout this process and is not lost.

Similarly, when a radio broadcasts a signal, the audio signal is first converted into an electrical signal, which is then amplified and used to modulate an RF carrier wave. The modulated RF wave is then transmitted through an antenna as electromagnetic waves. The electrical energy from the audio signal is conserved and transformed into electromagnetic energy in the transmitted signal.

In both cases, the energy conservation principle is applied, and the energy is conserved throughout the process. Therefore, the functioning of a radio obeys the energy conservation principle.

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Answer:

Explanation:

I think it's wrong but I tried my best..

Answer:

But negative acceleration means that the rate of change of velocity is negative or velocity decreases. Example: (1) When we apply brakes in a moving car, then negative acceleration acts on it and the car stops. (2) When we throw a ball upwards, then also negative acceleration acts on it.

Explanation:

If it helps you mark me as a brainleast

MATHEMATICALLY A NEGATIVE ACCELERATION MEANS YOU WILL SUBTRACT FROM THE CURRENT VALUE OF THE VELOCITY.

Turn the dial either clockwise to make the unit colder or anticlockwise to make the unit warmer to set the thermostat to any temperature.

A thermostat is a part of a regulating mechanism that senses the temperature of a physical system and takes action to keep it close to a desired setpoint.

Any system or gadget that heats or cools to a setpoint temperature uses a thermostat. Examples include central heating systems for buildings, air conditioners, HVAC systems, water heaters, kitchen appliances like refrigerators and ovens, and incubators for use in science and medicine.

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(i)  The number of independent loops cannot be a non-integer, there is no valid solution for the number of joints in the system. (ii) No valid interchange graphs or corresponding planar kinematic systems.

(i) The loop closure equation for a connected planar kinematic system with exactly 6 links, only binary joints, and mobility 5 can be obtained as follows: L= 3(n-1)-2j

Where L is the number of loops, n is the number of links, and j is the number of joints. For this system, we have n=6 and mobility, m=5. Using the above equation, we can find the number of joints j as:j= 3(n-1)-m=3(6-1)-5= 8The number of joints in the system is 8. The interchange graphs are shown below:

(ii) Corresponding to the first graph in part (i), we can have a planar kinematic system where the six links are arranged such that four of them form a parallelogram and the other two links are connected to the parallelogram diagonally. Corresponding to the second graph in part (i), we can have a planar kinematic system where three links are connected in series to form a chain, and the other three links are connected to the chain.

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