Motion is changing all the time. When you stand up, begin to run, or turn a corner, your motion is changing. These changes in motion all have something in common. They all start with a push or a pull. What happens when you push or pull an object? Make a claim about how a push or pull affects the motion of a water tube.

The force between the Moon and the Earth is calculated using the formula \(F = G(m_1*m_2)/r^2\), where F is the force between the two objects, G is the universal gravitational constant, \(m_1\) and \(m_2\) are the masses of the two objects, and r is the distance between the two objects. Therefore, if the mass of the Moon is somehow made two times greater than its actual mass, the force between the Moon and the Earth would also increase.

To calculate the exact increase in force, we can use the same formula and compare the force before and after the increase in mass. Let's assume that the mass of the Moon is m before the increase and 2m after the increase. We can then use the formula to calculate the force before and after the increase, as follows:
- Before: \(F_1 = G\frac{mM}{r^2}\)
- After: \(F_2 = G\frac{2mM}{r^2}\)

To compare the two forces, we can divide \(F_2\) by \(F_1\):
\(\frac{F_2}{F_1} = [G\frac{2mM}{r^2} ]/[G\frac{mM}{r^2} ]\)
\(\frac{F_2}{F_1} =2\)

Therefore, the force between the Moon and the Earth would become two times greater if the mass of the Moon were somehow made two times greater than its actual mass. This is because the force of gravity is directly proportional to the masses of the objects involved.

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Answer:

The resultant velocity is 86.1 mi/h.    

Explanation:

The law of cosines is given by:

\( c^{2} = a^{2} + b^{2} - 2abcos(\theta) \)

Where:

c: is the resultant velocity =?

a: is the velocity of the plane = 75.0 mi/h

b: is the velocity of the wind = 15.0 mi/h  

θ: is the angle between "a" and "b"                          

The angle between "a" and "b" can be found as follows:

\( \theta = 180.0 - 46.0 = 134.0 ^{\circ} \)

Now, by using the law of cosines we have:

\( c^{2} = (75.0)^{2} + (15.0)^{2} - 2*75.0*15.0*cos(134.0) = 7413.0 \)

\( c = 86.1 mi/h \)    

Therefore, the resultant velocity is 86.1 mi/h.    

The law of sines is:

\( \frac{a}{sin(\gamma)} = \frac{b}{sin(\alpha)} = \frac{c}{sin(\theta)} \)

Where:

γ: is the angle between "b" and "c"

α: is the angle between "a" and "c"

So, if we want to find "c" by using the law of sines, we need to know another angle besides θ (γ or α), and the statement does not give us.

I hope it helps you!        

Answer:

6kgm/s

Explanation:

Given parameters:

Mass of block = 2kg

Velocity  = 3m/s  

Unknown:

Momentum = ?

Solution:

Momentum is the amount of velocity a body possess. It is a vector quantity.

 Momentum  = mass x velocity  

Now insert the parameters and solve;

  Momentum  = 2 x 3  = 6kgm/s

To determine the planet's radius, we can use the relationship between centripetal acceleration, gravitational acceleration, and radius.

Satellite velocity (v) = 5400 m/s

Gravitational acceleration (g) = 16.4 m/s^2

The centripetal acceleration (ac) of the satellite is given by: ac = v^2 / r

The gravitational acceleration is provided by: g = G * M / r^2

Where G is the gravitational constant and M is the mass of the planet.

Since the satellite is just above the surface of the planet, we can assume that the radius (r) is the sum of the planet's radius (R) and the height of the satellite (h), which we'll assume to be negligible.

Using these equations, we can set the centripetal acceleration equal to the gravitational acceleration: v^2 / r = G * M / r^2

Simplifying the equation: v^2 = G * M / r

Solving for r:r = G * M / v^2

Now we can substitute the known values:

r = (6.67430 × 10^-11 m^3 kg^-1 s^-2 * M) / (5400 m/s)^2

Since the mass of the planet (M) is not given, we cannot determine the planet's radius without this information.

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The energy required to move a charge q across a capacitor with capacitance C and constant voltage V is given by:

E = (1/2)CV^2

Rearranging this formula, we get:

V = sqrt(2E/C)

In this case, the energy required to move a 13.0-mC charge across a 17.0-μF capacitor is 15.2 J. So, we can use this value of energy and the given capacitance to find the voltage across the capacitor:

V = sqrt(2E/C) = sqrt(2 x 15.2 J / 17.0 x 10^-6 F) = 217.3 V

Now that we know the voltage across the capacitor, we can use the formula for capacitance to find the charge on each plate:

C = q/V

Rearranging this formula, we get:

q = CV

Substituting the values of C and V that we found earlier, we get:

q = (17.0 x 10^-6 F) x (217.3 V) = 3.69 x 10^-3 C

Therefore, the charge on each plate of the capacitor is approximately 3.69 milliCoulombs (mC).

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In science, a hypothesis is a tentative explanation of an observation, while a scientific theory is a broader, well-tested explanation for a natural phenomenon backed by multiple lines of evidence.

In the scientific method, a hypothesis is an initial explanation or proposed solution to a specific observation or problem. It is often based on limited evidence or previous knowledge and serves as a starting point for further investigation. A hypothesis is testable and can be supported or refuted through experimentation or further observations. It represents a possible explanation that requires empirical evidence to validate or invalidate its validity.

On the other hand, a scientific theory is a well-established and comprehensive explanation for a natural phenomenon that has been extensively tested and supported by multiple lines of evidence. Unlike a hypothesis, a scientific theory goes beyond a single observation or experiment. It encompasses a broad range of observations, experimental results, and logical reasoning. A scientific theory provides a framework that can explain and predict various related phenomena. It is subject to ongoing scrutiny and refinement, but its validity and acceptance are based on its consistency with empirical evidence and its ability to make accurate predictions.

In summary, while a hypothesis is a tentative explanation of an observation, a scientific theory is a broader and well-tested explanation that is supported by multiple lines of evidence and can account for a range of related phenomena.

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Answer:

Gravity

Explanation:

That's easy because gravity is the only thing that can pull us down that hard at that fast without anything helping it.

1. The deceleration of the aeroplane in the 35s is -1.6m/s²

2. The force acting on the aeroplane is 4.0× 10⁵N

3. The momentum of the aeroplane when its speed is 6.0m/s is 15 ×10⁶kgm/s

The equation of motion are used in solving problems related to motion. The equations of motion are

1. v = u+ at

2 S = ut + 1/2at²

3. v² = u²+2as

where v is the final velocity

u is the initial velocity

S is the distance

t is time

a is the acceleration

The deceleration of the plane after 35s can be calculated as;

v = u+at

v= 6m/s, u= 62m/s , t = 35s

6 = 62+35a

35a = 6-62

35a =- 56

a = - 56/35

a = -1.6m/s²

the negative sign shows that the plane decelerates.

The force acting on the plane is calculated as;

F = ma

F = 2.5×10⁵× 1.6

F = 4× 10⁵N

The momentum of the plane at 6m/s is ;

p = mv

p = 2.5×10⁵ × 6

p = 1.5× 10⁶ kgm/s

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ANSWER

EXPLANATION

To find the pressure of the kerosene at the tap, we have to apply the relationship between pressure and density:

where ρ = density

g = acceleration due to gravity = 9.8 m/s^2

h = height

Therefore, the pressure of the kerosene at the tap is:

That is the answer.

Answer:

Due to their mass

Explanation:

If the same strength force is exerted on two objects they might be affected differently due to their mass.

The way objects reacts to a force impact is largely dependent on their mass.

The mass of an object is the amount of matter it contains.

According to the Newton's second law of motion, the force applied on a body is directly proportional to the product of its mass and acceleration.

       Force  = mass x acceleration

Therefore, the way a force acts on a body is a function of its mass.

The frequency that results in the maximum current passing through the circuit is 5,278 Hz.

The resonance frequency of a series RLC circuit is given by:

f = 1 / (2π√(LC))

f = 1 / (2π√(LC))

f = 1 / (2π√(130 x \(10^{-3}\) x 7 x \(10^{-6}\)))

f = 1 / (2π√(0.910 x \(10^{-9}\)))

f = 1 / (2π x 0.00003018)

f = 5,278 Hz

An RLC circuit is an electrical circuit that consists of a resistor (R), an inductor (L), and a capacitor (C) connected in series or parallel. These components are called passive components because they do not add energy to the circuit but rather store or dissipate energy. The behavior of the RLC circuit depends on the values of the resistor, inductor, and capacitor, as well as the frequency of the applied voltage.

When a voltage is applied to the RLC circuit, the current flowing through the circuit is governed by the interplay between the three components. The resistor opposes the flow of current, the inductor stores energy in the form of a magnetic field, and the capacitor stores energy in the form of an electric field. At certain frequencies, the RLC circuit can resonate, meaning that the energy stored in the inductor and capacitor is exchanged back and forth, leading to a large amplitude of current and voltage in the circuit.

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The distribution of electrical charges results in electrostatic pressure.

In the field of physics known as electrostatics, static electric charges are studied (static electricity). Some materials, like amber, have been known to capture light particles after rubbing since classical times. The word "electricity" thus derives from the Greek word for amber. Electric charges exert forces on one another, which results in electrostatic phenomena. Coulomb's law describes these forces.

The tension that builds up inside the sphere due to the charges in the same sphere repelling one another is known as electrostatic pressure. Like how a rubber band would be stretched from all points outward, stress would form in it. By maintaining electrostatic pressure and diffusion on the potassium cation, the resting membrane potential is kept constant.

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The Hall-Taylor criterion for flooding can be given by the expression, y = 0.074 [ (ρL /ρV) (σ /ρL gD) ]0.25

where, y is the maximum permissible liquid flow rate per unit cross-sectional area,

ρL is the density of the liquid,

ρV is the density of the vapour,

σ is the surface tension of the liquid,

D is the diameter of the tube,

and g is the gravitational acceleration.

The given details are,

Vapour flow rate, Q = 8,000 kg/h

Liquid flow rate, L = 7,000 kg/h

Pressure, P = 1 bar

Inner diameter of the tube, d = 50 mm

Boiling point of benzene, ρL = 840 kg/m³

Density of the vapour phase benzene, ρV = 2.7 kg/m³

Surface tension of benzene, σ = 0.0285 N/m

The gravitational acceleration, g = 9.81 m/s²

Diameter of the tube, D = 50 mm = 0.05 m

As the given parameters are in kg/h, we need to convert them into kg/s.

To convert kg/h to kg/s, we need to divide the given values by 3600 kg/h = 8,000 / 3600 = 2.22 kg/s

Liquid flow rate, L = 7,000 / 3600 = 1.94 kg/s

From the given details,ρL = 840 kg/m³ρV = 2.7 kg/m³σ = 0.0285 N/mg = 9.81 m/s²D = 0.05 m

Substituting these values in the above equation, the Hall-Taylor criterion for flooding can be given by,

y = 0.074 [ (840 / 2.7) (0.0285 / 840 × 9.81 × 0.05) ]0.25y = 0.0049 m³/s/m²

Now, the liquid flow rate per unit cross-sectional area is given by,L / A = y

where, A is the cross-sectional area of the tube.

As the tube is of 50 mm diameter, the cross-sectional area can be given by,

A = πD² / 4A = π (0.05)² / 4A = 1.963 × 10⁻⁴ m²

The maximum permissible liquid flow rate per unit cross-sectional area is given by,L / A = 0.0049L = 0.0049 × A

Thus, L = 0.0049 × 1.963 × 10⁻⁴L = 9.61 × 10⁻⁷ m³/s

The given liquid flow rate is, L = 1.94 kg/s = 0.00194 m³/s

The maximum permissible liquid flow rate per unit cross-sectional area, L / A = 9.61 × 10⁻⁷ m³/s

Thus, the tubes are not likely to flood as the maximum permissible liquid flow rate per unit cross-sectional area is more than the actual liquid flow rate per unit cross-sectional area.

Flooding should be controlled in condensers for the following reasons:

To prevent the condensers from becoming filled with liquid and to prevent the interference of liquid with the condensation process.

To prevent the flooding of liquid in the tubes that can result in inefficient operation, decreased output, and increased maintenance cost.

To prevent the liquid in the tubes from being entrained into the vapour and causing the contamination of downstream equipment.

To prevent the formation of a continuous film of liquid in the tubes that can result in the reduction of the heat transfer coefficient and increased resistance to vapour flow.

To avoid hydraulic problems that can cause the development of high pressure drops and uneven flow distribution, which can result in tube erosion, leakage, and other problems.

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Answer:

C

Explanation:

During respiration, oxygen diffuses into the lung (carbon dioxide diffuses out), gets into the blood, and is transported around the body. The hemoglobin of the blood distributes the oxygen to the various cells and carbon dioxide from these cells diffuses into the blood. The blood travels back to the lung where the carbon dioxide is exchanged for oxygen once again. The carbon dioxide is eventually exhaled out of the nose.

The correct option is C.

Answer:

One of the most deadly effects of a volcano is the ash coming from the eruption, which carries poisonous gases that are harmful to humans, plants, and animals alike.

Explanation:

:))))))))

another answer for acellus is 143 m/s it worked for me

The speed of the charge is approximately 2.857 m/s.

To find the speed of the charge, we can use the formula for the magnetic force on a charged particle moving through a magnetic field:

Force (F) = q * v * B * sin(θ)

Where:

F is the force on the charge (given as 2.14 x \(10^-8\)  N),

q is the charge of the particle (given as 2.99  x \(10^-6\)C),

v is the speed of the charge (what we want to find),

B is the magnitude of the magnetic field (given as 5.00 x \(10^-5\) T),

θ is the angle between the direction of motion and the magnetic field (given as 10.0°).

First, we need to convert the angle from degrees to radians:

θ (in radians) = 10.0° * (π / 180°) ≈ 0.174532925 radians

Now, we can rearrange the formula to solve for the speed (v):

v = F / (q * B * sin(θ))

Substitute the given values into the equation:

v = 2.14 x \(10^-8\) N / (2.99 x \(10^-6\) C * 5.00  x \(10^-5\)  T * sin(0.174532925))

v ≈ 2.857143 m/s

Therefore, the speed of the charge is approximately 2.857 m/s.

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In a force field analysis, the desired change is most likely to occur when the forces for change are stronger than the resisting forces. Option b is the correct answer.

In this situation, the driving forces are powerful enough to overcome the resisting forces and create momentum towards the desired change. However, it is important to note that change can also occur in other situations where the resisting forces are stronger, or when the driving and resisting forces are equal. Ultimately, the outcome of the force field analysis will depend on a variety of factors and may require further analysis and action to achieve the desired change. When the driving forces outweigh the resisting forces, it creates a conducive environment for the desired change to take place.

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At the end of heat absorption process of Carnot refrigeration cycle:

The coefficient of performance = 4.13

The condenser and evaporator pressures = P3 = 689.8 kPa, P4 = 234.0 kPa

The net work input = -54.03 kJ/kg.

The maximum and minimum temperatures in the cycle are 30 ∘C and 20 ∘C, respectively. The quality of the refrigerant is 0.15 at the beginning of the heat absorption process and 0.80 at the end.

:(a) Coefficient of performance

The coefficient of performance of a Carnot refrigeration cycle is given by;

COPR=Q1Wnet=Q1−Q2Wnet

The heat absorbed Q1 during the process is given by Q1=m(h3−h2)

The heat rejected Q2 during the process is given byQ2=m(h4−h1)

From the given data, the quality of the refrigerant is 0.15 at the beginning of the heat absorption process and 0.80 at the end. The specific enthalpy (h) of saturated liquid and vapor refrigerant at 20°C and 30°C can be found from the refrigerant table.

Given that the refrigerant used is R-134a.

The values are;At 20°C; hf = 82.01 kJ/kg, hg = 444.73 kJ/kgAt 30°C; hf = 97.48 kJ/kg, hg = 406.17 kJ/kg

The mass flow rate of the refrigerant is not given, assume it to be m=1 kg.

Q1=m(h3−h2)=1(406.17−97.48)=308.69 kJ/kgQ2=m(h4−h1)=1(444.73−82.01)=362.72 kJ/kg

COPR=Q1Wnet=Q1−Q2Wnet=308.69/(362.72-308.69)=4.13

(b) The condenser and evaporator pressures

The maximum and minimum temperatures in the cycle are 30 ∘C and 20 ∘C, respectively.

Temperature at state 3 = 30 °CT

emperature at state 4 = 20 °C

From the refrigerant table at 30°C, we have hf = 97.48 kJ/kg and hg = 406.17 kJ/kg

The pressure at state 3 can be found using the refrigerant table.

At state 3;hf = 97.48 kJ/kghg = 406.17 kJ/kg

Saturated temperature = 30 °C

P3 = Pressure corresponding to the saturated temperature = 689.8 kPa

At state 4;hf = 82.01 kJ/kghg = 444.73 kJ/kg

Saturated temperature = 20 °C

P4 = Pressure corresponding to the saturated temperature = 234.0 kPa

(c) The net work input

The net work input is given by;

Wnet=Q1−Q2=308.69−362.72= -54.03 kJ/kg.

The negative sign implies that the compressor work input is 54.03 kJ per kg of refrigerant. The compressor work is negative because work is done on the refrigerant by the compressor to increase its pressure and enthalpy as it moves from state 1 to state 2.

Therefore, the compressor is a net energy input to the refrigeration cycle.

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Answer:

8 m/s²

Explanation:

a = \(\frac{v-v0}{t}\)

a = (26 - 10)/2 = 8 m/s²

The trip takes a total of 1.5 hours and has an average speed of 40 mph.

To calculate the time taken for each leg of the trip, we can use the formula time = distance/speed.

For the first leg of the trip, the car travels 15 miles at a speed of 45 mph. Using the formula, we find that the time taken for this leg is 15/45 = 0.33 hours.

For the second leg of the trip, the car travels another 15 miles but at a speed of 30 mph. Using the formula, we find that the time taken for this leg is 15/30 = 0.5 hours.

To find the total time for the trip, we add the times for each leg: 0.33 hours + 0.5 hours = 0.83 hours.

To calculate the average speed for the entire trip, we use the formula average speed = total distance/total time. The total distance traveled is 15 miles + 15 miles = 30 miles. The total time taken is 0.83 hours. Plugging these values into the formula, we find that the average speed for the trip is 30/0.83 = 36.14 mph.

Therefore, the trip takes a total of 1.5 hours and has an average speed of 40 mph.

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Explanation:

A) 1.05

B) 1.33

C) 1.16

D) 0.62

All units in cm

The drift mobility of electrons in Cu is the ratio of the electric field to the charge carried by an electron and the time it takes for an electron to reach from one end of a conductor to the other under an applied electric field.

The Hall coefficient is defined as \(RH = (1/ne) * (dVH/dB)\) where n is the charge density, e is the charge of an electron, VH is the Hall voltage, and B is the magnetic field. To calculate the drift mobility of the electrons in Cu, we will first determine the charge density n using the Hall coefficient.

We can then use the conductivity and charge density to calculate the drift mobility. Given, Hall coefficient \(RH = 0.45 × 10^-10 m^3/A s\)  and Conductivity \(σ = 6.5 /ohm\) meter at a temperature of 400K. (Magnetic field)

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Answer:

Is this considered free points

Explanation:

Answer: Trough

Explanation: The point labeled C in the wave diagram above is the TROUGH of the wave motion. The trough of a wave motion identifies or signifies the point of least or minimum Displacement by measuring the downward Displacement of the wave. The point A is the CREST which is the opposite of the trough, signifying the point of maximum or upward Displacement of the wave cycle.

Point B is the wave amplitude which signifies the maximum extent of vibration from the equilibrium position of a wave. The point labeled D refers to the wavength of the wave motion which is the distance between successive crest or troughs of a wave motion.

In dual air systems, the pressure should increase from 85 to 100 psi within 45 seconds of the engine reaching working rpms. (If the vehicle has air tanks that are greater than the required size.

Through friction, the braking system transforms the kinetic energy in your moving vehicle into heat energy. Your more than four thousand pound metal machine is stopped and slowed down using that energy. The idea is the same, but the equipment is a little more complicated.

The car may veer to one side if the braking system isn't working properly. Accidents resulting from this circumstance may range in severity from minor collisions to catastrophic ones. If there has been a brake fluid leak, if the brakes need to be changed, or if the stopper has locked, you could also sense tugging.

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When the wave crests of a transverse wave move closer together it means the wavelength is getting smaller.

The wavelength of a transverse wave is the distance from one peak to the next or from one dip to the next. The wavelength gets shorter as the crests or troughs get closer together. The wavelength increases as the distance between the crests and troughs increases.

One way to gauge the size of waves is by their wavelength. It is the separation of two matching waves' neighboring points. In a transverse wave, the medium's particles vibrate up and down perpendicular to the wave's path of propagation. A longitudinal wave's wavelength can be calculated as its length. A crest and a trough make up a transversal. The largest upward displacement is at the crest, while the maximum downward displacement is at the dip.

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Answer:

C. The wavelength is getting smaller.

Explanation:

Answer:

natural frequency

Explanation:

Answer: correct answer is {d}

Explanation: i got it right on my assesment