The Early Bird communication satellite hovers over the same point on Earth's equator indefinitely, because

Answer:

a) The initial momentum of the ball is 22.5 kg·m/s

b) The magnitude of the momentum imparted by the ball is 30 kg·m/s

Explanation:

The question is based on change in momentum

The mass of the ball, m = 0.75 kg

The velocity with which the ball is thrown against the wall, u = 30 m/s

The time duration it takes while the ball is in contact with the wall, Δt = 0.05 sec

The velocity of the ball as it bounce back, v = -10 m/s (The ball moves in the opposite direction)

a) The initial momentum of the ball, \(P_{Initial}\) = m × u = 0.75 kg × 30 m/s = 22.5 kg·m/s

b) The final momentum of the ball, \(P_{Final}\) = m × v = 0.75 kg × (-10 m/s) = -7.5 kg·m/s

The momentum imparted by the ball, ΔP = The final momentum - The initial momentum

∴ ΔP = \(P_{Final}\) - \(P_{Initial}\)  =  -7.5 kg·m/s - 22.5 kg·m/s = -30 kg·m/s

The magnitude of the momentum imparted by the ball, \(\left | \Delta P \right |\) = 30 kg·m/s

Answer:

correct statement should be the same speed.

Explanation:

if the car is moving east reads 60 mph and it passes another car with the same speed.

therefore, the magnitudes of their velocities are equal.

and each car's velocity is the negative of the other car vehicle.

so the correct statement should be the same speed.

Answer:

They have different velocities

Explanation:

The cars are passing each other at the same speed, and because velocity is speed with direction they are at different velocities.

If you want to encourage physical activity for persons with disabilities in your community, accessibility ramps for entering and exiting the pool would be a wonderful addition.

Any material or feature that is completely accessible to and useable by individuals with disabilities would be an example of accessibility. This could be referring to specific components, features, or the entire web experience.

Making information, actions, and/or surroundings sensible, relevant, and useable for as many individuals as feasible is the practice of accessibility. Architectural design is a typical instance of accessibility that all of us have probably seen. Think about a building's "accessible entryway."

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Mechanical energy is the type of energy connected to an object's position and motion. Thermal energy is the sum of the kinetic and potential energies of all the components in an object.

Potential energy is a form of stored energy that is dependent on the relationship between different network elements. When a spring is strained or stretched, its potential energy increases. A steel ball has more heat energy when it is raised above surface than when it is brought to Earth.

An object's potential energy relies on where it is in relation to other items. For instance, a brick laying on the ground has less heat energy than one dangling off of a 2 different building.

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The amount of Ra-226 left after4800 yrs with a half-life of 1600 yrs is  0.03125 g.

Half-life is the time taken for half the sample of a radioactive substance to disintegerate.

To calculate the amount of Ra-226 left, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the amount of Ra-226 left after 400 yrs is 0.03125 g.

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The question is asking whether it is possible to find a magnetic vector potential for a given uniform surface current flowing in the xy plane and generating a magnetic field for different regions of space.

To determine whether it is possible to find a magnetic vector potential for the given scenario, we need to consider the conditions that must be satisfied. In general, a magnetic vector potential A can be found if the magnetic field B satisfies the condition ∇ × A = B. This is known as the magnetic vector potential equation.

In the given situation, the magnetic field is different for the regions above and below the xy plane. For z > 0, the magnetic field is described as B = MoK -î, and for z < 0, it is described as B = -MoK -î. To find the magnetic vector potential, we need to determine if there exists a vector potential A that satisfies the equation ∇ × A = B in each region.

By calculating the curl of A, we can check if it matches the given magnetic field expressions. If the curl of A matches the magnetic field expressions for both regions, then it is possible to find a magnetic vector potential for the given scenario. However, if the curl of A does not match the magnetic field expressions, then it is not possible to find a magnetic vector potential that satisfies the conditions.

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Answer:

4.097 Joules

Explanation:

Applying,

P.E = mgh............... Equation 1

Where P.E = Potential energy, m = lemming mass, h = height, g = acceleration due to gravity

From the question,

Given: m = 0.0780 kg, h = 5.36 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

P.E = 0.0780(9.8)(5.36)

P.E = 4.097 Joules.

Hence the potential energy is 4.097 Joules

Answer:

4.097 J

Explanation:

The image is approximately 9.33 cm away from the mirror, on the object's side.

To determine the image location formed by a converging mirror, we can use the mirror equation:

1/f = 1/d_o + 1/d_i

where:

f is the focal length of the mirror,

d_o is the object distance (distance of the object from the mirror), and

d_i is the image distance (distance of the image from the mirror).

In this case, the focal length (f) is given as 7 cm, and the object distance (d_o) is 4 cm.

Plugging in the values into the mirror equation:

1/7 = 1/4 + 1/d_i

To find the image distance (d_i), we can solve for it:

1/d_i = 1/7 - 1/4

1/d_i = (4 - 7) / (4 * 7)

1/d_i = -3 / 28

Taking the reciprocal of both sides:

d_i = 28 / -3

d_i ≈ -9.33 cm

The negative sign indicates that the image formed by the converging mirror is virtual and located on the same side as the object.

Therefore, the image is approximately 9.33 cm away from the mirror, on the object's side.

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By using kinetic energy terms, the maximum speed of the mass is 3.95 m/s.

This massless spring can be solved by using kinetic energy terms. Kinetic energy can be determined as

K = 1/2 . m . v² ................... ( 1 )

where K is kinetic energy, m is mass and v is velocity.

When the case is on vibration, then the kinetic energy can be defined as

K = 1/2 . k . A² .................. ( 2 )

where k is force constant, A is amplitude of wave.

By combining these 2 equations, we get

K = K

1/2 . m . v² = 1/2 . k . A²

v² = k . A² / m

v = √(k . A² / m)

From the question above, we know that :

k = 27 N/m

m = 0.35 kg

A = 0.45 m

By substituting all parameters, we can determine the maximum speed

v = √(k . A² / m)

v = √(27 . 0.45² / 0.35)

v = 3.95 m/s

Hence, the maximum speed of the mass is 3.95 m/s

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A) The mass of 28.76 mL of acetone is approximately 22.7 g.

B) The volume of 6.40 g of acetone is approximately 8.12 mL.

A) To determine the mass of 28.76 mL of acetone, we need to know the density of acetone. The density of acetone is approximately 0.789 g/mL. Therefore, we can calculate the mass as follows:

Mass = Volume * Density

Mass = 28.76 mL * 0.789 g/mL

Performing the calculation:

Mass ≈ 22.67564 g

Rounding the result to the correct number of significant figures, the mass of 28.76 mL of acetone is approximately 22.7 g.

B) To determine the volume of 6.40 g of acetone, we can rearrange the formula:

Volume = Mass / Density

Volume = 6.40 g / 0.789 g/mL

Performing the calculation:

Volume ≈ 8.116 g/mL

Rounding the result to the correct number of significant figures, the volume of 6.40 g of acetone is approximately 8.12 mL.

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\( \\ \tt \longmapsto \: h = - 4.8 {t}^{2} + 8.2t + 1.8 \\ \\ \tt \longmapsto \: h = - 4.8(1.7) {}^{2} + 8.2 \times 1.7 + 1.8 \\ \\ \tt \longmapsto \: - 4.8 \times 2.89 + 1.39 + 1.8 \\ \\ \tt \longmapsto \: 13.8 + 1.39 + 1.8 \\ \\ \tt \longmapsto \: 17.06\)

Answer:

m = 60 [kg] (mass on the moon)

Explanation:

We must remember that the mass is conserved, that is, it remains the same regardless of where it is located.

The only variation is the weight, which is different from the mass. Weight is determined by means of the product of mass by gravitational acceleration.

Therefore the mass of 60 [kg] on Earth will be the same mass on the moon.

Answer:

57.1 m/s

Explanation:

Speed = Distance/Time

Speed = 800/14

Speed = 57.1 m/s (3sf)

Answer:

B and C is the Answer

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The vapor pressure of water at room temperature is 0.2 psi absolute pressure (or -14.5 gauge pressure).

433 4.33 kilograms per square inch

A pressure of 10 X. 433 4.33 pounds per square inch would be exerted by ten feet of water. The same height-pressure relationship is true regardless of the area of the vertical liquid column. If the density of the liquid is known, the pressure exerted by it may be computed in the same way.

So the pressure due to the water column would be 43.2 psi at 100 feet deep. Add extra 14.5 psi to account for atmospheric pressure. And the total (absolute) pressure is around 57.7 psia

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Answer:100 g of ca

Explanation:

Answer: 6 km/h

Explanation:

3/30 • 60 = 6km/h

Answer:

6 km/h

Explanation:

Answer:

a true

Explanation:

Water has the high specific heat capacity.

That means it resists to change its temperature when a considerable amount of heat lost or gained

4200J is needed to raise the temperature of 1kg substance by 1 degree Celsius

Answer:

The name of the force is elastic (spring) force

Explanation:

The elastic force which is the restoration force of an elastic (spring like) object that tries to return to its initial non-stretched state built up by the pulling of the bow by the archer (using the muscles) pushes on the arrow which the archer releases the same time he leaves the bow string, and the arrow flies in the direction already pointed by the archer

The arrow ultimately falls down due to gravity forces that acts on all objects within the Earths gravitational field. However due to the speed of constant horizontal speed of the arrow and increasing downward speed of the due to the gravity force, the falling of the arrow looks disappointing.

Explanation:

I hope this really can help you...

well done friend...

Answer:

8.803 s

(but this is only if it's a free fall, which we assume since we didn't get the mass of the hulk)

In an electrical circuit containing only XC, the power factor is said to be zero. In this circuit, the power supplied by the source does not get dissipated in the circuit, but it is stored in the electric field of the capacitor. Therefore, the apparent power is equal to the reactive power (VARs).

When the circuit has only capacitive reactance, the power factor is said to be lagging.A reactive circuit that only has capacitive reactance has a power factor of zero. As a result, the power supplied by the source is not used by the circuit; rather, it is stored in the electric field of the capacitor.

The circuit's power factor is determined by the cosine of the phase angle between the voltage and current. When the power factor is zero, the cosine of 0 degrees is one, whereas the cosine of 90 degrees is zero. A capacitor in a circuit resists changes in voltage, storing energy when the voltage is high and releasing energy when the voltage is low.

This causes the phase angle between the voltage and current to be 90 degrees, and since the power factor is determined by the cosine of the phase angle, a circuit with only capacitive reactance has a power factor of zero. In order to achieve unity power factor, reactive power compensation equipment such as capacitors or inductors are added to the circuit.

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Answer:

a) 2.5 b) 2.27 c) 2.38

Explanation:

a) 50/20=2.5 m/s

b) 50/22=2.27 m/s

c) (50+50)/(20+22)=2.38 m/s

A bullet and a base ball

Objects with a small mass can produce a large acceleration if they experience a large force. This is described by Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

It's important to note that while these objects can produce a large acceleration, they can also cause significant damage or harm if not handled properly. It's important to always take appropriate safety precautions when working with objects that have the potential to produce large forces and accelerations.

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Answer:

d

Explanation:

Answer:true

Explanation:

A well-structured purpose statement for nursing research typically includes the following components:

Population: Clearly identifying the specific population or group of individuals that the study aims to investigate. This helps to define the scope and focus of the research.

Variable(s): Clearly identifying the key variables or concepts that will be examined in the study. These variables should be relevant to the research question and align with the overall purpose of the study.

Context: Providing information about the context or setting in which the study will take place. This helps to situate the research within a specific healthcare environment or context, adding depth and relevance to the study.

Goal or Aim: Clearly stating the overall goal or aim of the study. This outlines the specific objective that the researcher seeks to achieve through the research, such as exploring relationships, examining outcomes, or testing interventions.

By including these components, a purpose statement in nursing research effectively communicates the specific population, variables, context, and goal of the study, setting a clear direction and focus for the research endeavor.

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By changing the frequency of light waves, specifically moving the slider to the dark purple color, the wavelength of the light waves becomes shorter.

The color of light is determined by its frequency, and frequency is inversely related to wavelength. As the frequency of light increases, the wavelength decreases, and vice versa. When the slider is moved all the way to the right to the dark purple color, it represents a higher frequency of light.

In the electromagnetic spectrum, different colors correspond to different ranges of wavelengths. Violet and purple colors have higher frequencies and shorter wavelengths compared to other colors. By selecting the dark purple color on the slider, we are indicating a higher frequency of light waves.

The reason behind this relationship between frequency and wavelength is the wave nature of light. Light waves propagate as oscillating electromagnetic fields, and the distance between two consecutive peaks or troughs of the wave represents the wavelength. As the frequency of the wave increases, more wave cycles occur per unit time, resulting in a shorter distance between the peaks or troughs.

Therefore, when the slider is moved to the dark purple color, the wavelength of the light waves becomes shorter due to the corresponding increase in frequency.

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Answer:

A

Explanation:

Answer:

Explanation:

KE =1/2mv²

KE =1/2(1000kg)(15m/s)²

KE = 500kg (225 m²/s²)

KE = 112,500 JJ