why does the direction of the spin matter

As they pull the tanker a distance 0.900 km toward the north, total work done is 1.908 ×10⁹ Joule.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

Net force applied on the tugboats pull  = √{( 1.50x10^6)² + ( 1.50x10^6)²}

= 2.12 × 10⁶ N.

Hence, the work done is =  2.12 × 10⁶ N × 0.900 km

= 2.12 × 10⁶ N × 900 m

= 1.908 ×10⁹ Joule.

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The critical angle of the transparent material is 35.3 degrees.

The critical angle is the angle of incidence at which the angle of refraction is 90 degrees. In this case, the angle of refraction is 32 degrees. Therefore, the critical angle is calculated as follows:

sin(critical angle) = sin(90 degrees) / sin(angle of refraction)

sin(critical angle) = 1 / sin(32 degrees)

sin(critical angle) = 0.574

critical angle = arcsin(0.574)

critical angle = 35.3 degrees

Therefore, the critical angle of the transparent material is 35.3 degrees.

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Adjusting the thermostat to reduce the air conditioner usage to five hours a day would save $7.50 daily.

The cost to run the air conditioner for nine hours a day is $13.50. To find the cost per hour, we can divide the total cost by the number of hours: \(\frac{13.50}{9} = $1.50 per hour\).

If the air conditioner is only running for five hours a day, the daily cost would be 5 hours × $1.50 per hour = $7.50.

By adjusting the thermostat to reduce the air conditioner usage from nine hours to five hours, there would be a daily saving of $7.50. This reduction in operating time leads to decreased energy consumption, resulting in cost savings. It's important to note that these calculations assume a consistent electricity rate and do not consider other factors such as seasonal variations, maintenance costs, or the specific energy efficiency of the air conditioner.

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Answer: C

Explanation:

Since bulb B is burnt out, the wires can't transfer to bulb A, so that's why bulb A will burn out.

If I get it wrong, sorry. Im still learning.

A 0.1mm diameter glass tube is inserted into an ethyl alcohol at 20 degrees centigrade in a cup. The angle of alcohol with the tube is 0 degrees. D = 0.1 mm = 0.001m, alcohol angle is 0 degrees, ethyl alcohol

\(η=1.1×10^-3 N⋅sec/ m², s_g\)

=0.79.

We have to determine how much glycerin rises in the tube. The force that moves the liquid through the tube is the difference between the downward force of gravity on the liquid column and the upward capillary force produced by the surface tension of the liquid against the walls of the tube.

The height to which the fluid rises in a capillary tube may be measured by balancing the capillary force against the force of gravity on the column.

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Answer:

BASETBALL

Explanation:

Answer:

It completely melts and has a final temperature of 22.4°C

Explanation:

(I am very bad at explaining, I am not a teacher, I am a student but I had exact same question on my test so I wanted to help.)

Okay, well to find the Heat required to melt Ice, we have to use the equation:

Q=(m·cΔT)+(m·hf)

So we can just plug in the values into the equation and see which one adds up too 80,000. (there is probably a better way i just did it this way)

For this situation, we know that:

So we can just change the value of change and temperature and see which one equals 80,000.( I will bold the value of change in temperature.)

Q=(m·cΔT)+(m·hf)

So which one equals 80,000? Equation #3 with the temperature at 22.4 °C

So the answer would be It completely melts and has a final temperature of 22.4°C.

Hope this makes sense, again I am not a teacher I am so bad at explaining, but I did my best. ;)

Answer:

1.5g/cm³

Explanation:

Given parameters:

Initial volume of the liquid  = 30cm³

Final volume of the liquid  = 50cm³

Mass of the liquid  = 30g

Unknown:

Density of the liquid  = ?

Solution:

Density is the mass per unit volume of a substance.

  Density  = \(\frac{mass}{volume}\)  

volume of the liquid  = final volume - initial volume  =  50cm³  -  30cm³

 volume of the liquid  = 20cm³

Density  = \(\frac{30}{20}\)   = 1.5g/cm³

Answer:

When a load resistor is added to a digital circuit, increasing the clock frequency does not directly help restore the output voltage. The clock frequency determines the rate at which digital signals are processed and transmitted within a circuit but does not have a direct impact on the output voltage level.

The output voltage level of a digital circuit is primarily determined by the logic levels of the input signals and the characteristics of the circuit components, such as the power supply voltage and the voltage thresholds of the logic gates. The load resistor affects the voltage drop across it and the current flowing through the circuit, which can indirectly influence the output voltage level.

Explanation:

Adding a load resistor doesn't have any relation with the clock frequency in the context of digital circuits. Hence, increasing the clock frequency won't help restore the output voltage.

What is a resistor?

What is voltage?

What happens when the load resistor is added?

Does increasing the clock frequency help restore the output voltage?

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 The charge Q is uniformly distributed throughout the sphere. The correct answer is (B)

When a solid conducting sphere is given a positive charge Q, the charge will distribute itself evenly throughout the surface of the sphere due to the repulsion of like charges. This is known as the "Faraday's ice pail experiment".

According to the principle of electrostatics, the charge on a conductor always resides on its surface and distributes itself in a way that the electric field inside the conductor is zero. Since the charge on a conductor always resides on its surface, it follows that the charge Q in this case must be uniformly distributed throughout the surface of the sphere.

Option (A) is not true because the charge is not concentrated at the center of the sphere. If the charge was concentrated at the center of the sphere, the electric field would not be zero inside the conductor, which contradicts the principle of electrostatics.

Option (C) and (D) are not true because the density of the charge does not change radially outward from the center. If the density decreased or increased radially outward, the electric field inside the conductor would not be zero, which again contradicts the principle of electrostatics.

Option (E) is not true because the charge is distributed throughout the entire volume of the sphere, not just on its surface. A solid conductor has free charges that can move throughout its entire volume, so the charge will distribute itself throughout the entire volume of the sphere until the electric field inside the conductor is zero.

Therefore, the correct answer is (B) it is uniformly distributed throughout the sphere.

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The position of the car at t = 9s can be determined by integrating the velocity function. The area under the velocity-time graph represents the displacement.

To find the position of the car at t = 9s, we need to integrate the velocity function with respect to time. Integrating the velocity function gives us the displacement function, which represents the change in position over time. By calculating the area under the velocity-time graph from t = 1s to t = 9s, we can determine the displacement of the car during this time interval.

First, we need to identify the shape of the velocity-time graph. Based on the given figure, we can see that the velocity remains constant at 2 m/s from t = 1s to t = 4s. During this interval, the car covers a distance of (2 m/s) * (4s - 1s) = 6m.

After t = 4s, the velocity decreases linearly from 2 m/s to 0 m/s over the next 4 seconds. The area of this triangular region is given by (1/2) * (4s - 1s) * (2 m/s + 0 m/s) = 6m.

Adding the displacements from both intervals, the total displacement of the car from t = 1s to t = 9s is 6m + 6m = 12m. Therefore, the position of the car at t = 9s relative to its initial position is x0 + 12m = 17m + 12m = 29m. Thus, the car's position at t = 9s is 29 meters along the x-axis.

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The current in the 1.6×104 V line from the substation is approximately 2,200 A.

A) The voltage ratio between the primary coil and the secondary coil is given by the transformer equation:

Vp/Vs = Np/Ns

where Vp and Vs are the voltages of the primary and secondary coils, respectively, and Np and Ns are the numbers of turns in the primary and secondary coils, respectively.

In this case, Vp = 1.6×104 V and Vs = 120 V, and Ns = 100. Solving for Np, we get:

Np = (Vp/Vs)Ns = (1.6×104 V / 120 V) × 100 = 1.3×106 turns

So the primary coil has approximately 1.3 million turns.

B) The power input to the transformer is given by:

Pin = VpIp

where Ip is the current in the primary coil. Since there is no energy lost in an ideal transformer, the power output from the transformer is equal to the power input:

Pout = Pin = VpIp

The power output from the transformer is also given by:

Pout = VsIs

where Is is the current in the secondary coil.

Equating these two expressions for Pout and solving for Is, we get:

Is = (Vp/Vs)Ip = (1.6 × 104 V / 120 V) × 210 A = 2.2 × 103 A

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To solve this problem, we can use the conservation of momentum equation, which states that the total momentum before a collision is equal to the total momentum after the collision.

Before the collision:
Initial momentum = (mass of boxcar 1) x (speed of boxcar 1) + (mass of boxcar 2) x (speed of boxcar 2)

Since the second boxcar is at rest, its initial speed is 0. Therefore, the initial momentum is:
Initial momentum = (8700 kg) x (16 m/s) + (mass of boxcar 2) x (0 m/s)
Initial momentum = 139,200 kg*m/s

After the collision:
Final momentum = (total mass of the two boxcars) x (final speed of the two boxcars)

Since the two boxcars stick together and move off with a speed of 5.5 m/s, we can use this as the final speed:
Final momentum = (8700 kg + mass of boxcar 2) x (5.5 m/s)

Setting the initial momentum equal to the final momentum:
139,200 kg*m/s = (8700 kg + mass of boxcar 2) x (5.5 m/s)

Simplifying and solving for the mass of the second boxcar:
mass of boxcar 2 = (139,200 kg*m/s) / (5.5 m/s) - 8700 kg
mass of boxcar 2 = 22,545.45 kg

Therefore, the mass of the second boxcar is approximately 22,545 kg.
To solve this problem, we can use the law of conservation of momentum. The momentum before the collision should equal the momentum after the collision.

Initial momentum = Final momentum

Let the mass of the second boxcar be m2.

Initial momentum = (mass of first boxcar) * (speed of first boxcar) = 8700 kg * 16 m/s

Final momentum = (mass of both boxcars) * (final speed) = (8700 kg + m2) * 5.5 m/s

Now we can set the initial and final momenta equal to each other:

8700 kg * 16 m/s = (8700 kg + m2) * 5.5 m/s

Divide both sides by 5.5 m/s:

(8700 kg * 16 m/s) / 5.5 m/s = 8700 kg + m2

Solve for m2:

m2 = (8700 kg * 16 m/s) / 5.5 m/s - 8700 kg

m2 = 24000 kg - 8700 kg

m2 = 15300 kg

The mass of the second boxcar is 15,300 kg.

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Only it's volume changes. Volume is defined as the space an object takes up. The amount of substance, which is the mass stays the exact same. The amount of force that Earth is pulling the car down (the weight) stays the same.

The rotational inertia of the rod about a perpendicular axis through a point on the rod at a distance of l/3 from the center of mass of the rod is ml2/3.

Finding the rotational inertia of a thin rod about a perpendicular axis through a location on the rod that is l/3 away from the centre of mass is the task at hand.

The rod has a set rotational inertia of ml2/12 about an axis perpendicular to its centre of mass. How challenging it is to alter an object's rotational motion is determined by its rotational inertia.

The Parallel Axis Theorem can be used to determine the rod's rotational inertia around the new axis.  We may get the slender rod's rotational inertia about the new axis using this formula; the result is ml2/3.

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Answer:

0,146 L

Explanation:

Según la ley de Charles; el volumen de una determinada masa de gas es directamente proporcional a su temperatura a presión constante.

A partir de los datos proporcionados;

V1 = 0,2 L

T1 = 100 ° C + 273 = 373 K

V2 =

T2 = 0 ° C + 273 = 273 K

V1 / T1 = V2 / T2

V1T2 = V2T1

V2 = V1T2 / T1

V2 = 0,2 × 273/373

V2 = 0,146 L

The advantage of remaining more than a car length behind the car in front of you when traveling on a highway at constant speed is that it gives you additional time to react to any unexpected situations that may occur.

For example, if the car in front of you brakes suddenly, you will have more time to react and avoid a collision. Additionally, the extra distance between you and the car in front of you will also provide you with a better view of the road ahead and any potential hazards that may arise.

By remaining more than a car length behind the car in front of you, you can also be more aware of your surroundings and be prepared for any sudden changes in speed or direction. This will help you remain safe and alert on the road. Overall, remaining more than a car length behind the car in front of you can help protect you and other drivers on the highway.

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Answer:

Relationship between population size, carrying capacity, and limiting factors is described below.

Explanation:

1. There are four variables which govern changes in population size.

births

deaths

immigration

emigration

A population gains individuals by birth and immigration and loses individuals by death and emigration.

2. Populations vary in their capacity to grow. The maximum rate at which a population can increase when resources are unlimited and environmental conditions are ideal is termed the population's biotic potential.

3. There are always limits to population growth in nature. Populations cannot grow exponentially indefinitely. Exploding populations always reach a size limit imposed by the shortage of one or more factors such as water, space, and nutrients or by adverse conditions such as disease, drought and temperature extremes.

4. The factors which act jointly to limit a population's growth are termed the environmental resistance. The interplay of biotic potential and density-dependent environmental resistance keeps a population in balance.

5. Carrying Capacity

For a given region, carrying capacity is the maximum number of individuals of a given species that an area's resources can sustain indefinitely without significantly depleting or degrading those resources. Determining the carrying capacities for most organisms is fairly straightforward. For humans carrying capacity is much more complicated. The definition is expanded to include not degrading our cultural and social environments and not harming the physical environment in ways that would adversely affect future generations.

6. Population Impact

Homo sapiens is a species possessing a diversity of individual needs. Thus, sub-populations will have different requirements and different impacts on the environment. For example 100 million vegetarians will have a significantly different environmental impact than 100 million meat-eaters. This can be demonstrated by comparing the affect on water supplies by both sub-populations. About 1000 tons of water are needed to produce 1 ton of grain. Almost 40% of all grain is used in meat and poultry production. Add to this the amount of water that goes into the production of meat, and you can see that meat comsumption places more stress on global water supplies than grain consumption.

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In a capacitive circuit, the voltage lags behind the current and the voltage would point downward.

A capacitive circuit is a circuit that has a capacitor in it. We know that sometimes the voltage and the current may not be in phase. This implies that they are out of step with each other.

In a capacitive circuit, the current is out of step with the voltage and they are out of step by a factor 1/4 of a cycle or by 90 degree or we can say that it is a factor of about π/2 radians.

Thus, the capacitive circuit is one that involves an out of phase relationship between the voltage and the current and the current is lagged by the voltage.

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Answer:

The correct answer is "625,000 J".

Explanation:

The given values are:

Mass,

m = 2,000 kg

Speed,

v = 25 m/sec

As we know,

⇒  \(Kinetic \ energy=\frac{1}{2} (mass \times speed^2)\)

Or,

⇒  \(K.E=\frac{1}{2}(mv^2)\)

On substituting the values, we get

⇒          \(=\frac{1}{2}(2,000\times 25^2)\)

⇒          \(=1000\times 625\)

⇒          \(=625,000 \ J\)              

Answer:

mutualism

Explanation:

Mutualism, a relationship in which both species benefit, is common in nature. In microbiology, there are many examples of mutualistic bacteria in the gut that aid digestion in both humans and animals.

Answer:

D

Explanation:

Wearing the appropriate clothing in certain temperatures or environments are important to our safety while exercising because not bearing caution to that can result in injury

Answer:

The answer would be D

Explanation:

Although it may not cover the full range of inclusivity aspects, such as representation and cultural sensitivity, creating accessible content is an important step towards inclusivity on social media platforms.

Based on the options provided, none of them specifically mention focusing primarily on tips for creating inclusive content on social media.

However, if we were to analyze the options and determine the most relevant choice, the closest option would be option A, "Create accessible video and social media."

While option A does not explicitly mention inclusive content, creating accessible content is an essential aspect of inclusivity.

Accessibility involves ensuring that content can be accessed and understood by a wide range of users, including those with disabilities.

By focusing on creating accessible video and social media, this resource may provide tips on making content inclusive for people with visual impairments, hearing impairments, cognitive disabilities, and other accessibility needs.

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Answer:

Option C or the third option.

Explanation: Water is a renewable resource there is so much of it and it just keeps circulating through the system it doesn't run out.

Answer:

c

Explanation:

Answer:

900 J

Explanation:

0.5 x 50= 25 x 6^2= 900 J

Oscillation is the regular back and forth motion of a periodic wave, while propagation is the process of transferring a signal from one point to another. Oscillation and propagation are important concepts in physics and engineering, as they are used to understand, model, and control the behavior of various physical systems. Oscillation and propagation are also used to understand and manipulate the behavior of light, sound, and other forms of energy.

Option B is correct.

(B )The incident ray is unpolarized whereas the reflected ray is vertically polarized.

Ray is the next in a series of characters. Ray is made up of two elements: a line and a line segment. It has one terminating end and one indefinitely extending end.

The ray's length cannot be determined. A ray is seen in the diagram below.

Reason ;

Many light sources, such as the sun, create polarised waves ( randomly). Unpolarized light is made up of a large number of waves with all conceivable polarisation directions.

Hence option B is correct.

(B )The incident ray is unpolarized whereas the reflected ray is vertically polarized.

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