When farm animals eat the grass on land until there is almost no ground cover, it is called ______.

Answer:

T is 9s.

Explanation:

In power formula Power (P) = work done(W)/time (t) . Make time(T) the subject.

Therefore time is work done÷ power

Time (T) = 225J÷25W

Time(T) = 9s

Therefore T is 9s.

The correct answer is 442.8 kWh (option C).

To calculate the energy used by a 615-watt refrigerator running 24 hours a day for 30 days, follow these steps:

1. Calculate the daily energy usage: 615 watts × 24 hours = 14,760 watt-hours
2. Convert daily energy usage to kilowatt-hours (kWh): 14,760 watt-hours ÷ 1,000 = 14.76 kWh
3. Calculate the monthly energy usage: 14.76 kWh/day × 30 days = 442.8 kWh

So, the correct answer is 442.8 kWh (option C).

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Answer:

air above a wild fire

Explanation:

the type of current formed in the pot is referred to as a convectional current which forms when the heated fluid rises making the cool fluid descend the same happens with the air above a wildfire a convectional current will form when the warm air rises and the cool air descends.the main reason for tge descending and ascending is that the air or liquid closest to the source of heat will get heated making it lighter but the air or liquid tgat was further from the source of heat will not be as light so as the warm fluid rises, the cool fluid descends.

Answer:

air above a wildfire

Explanation

The frequency of oscillation of a pendulum can be calculated using the formula:

f = 1 / (2π) √(g / L),

where f is the frequency, g is the acceleration due to gravity, and L is the length of the pendulum.

In this case, the length of the pendulum is given as 2 m. The acceleration due to gravity can be taken as approximately 9.8 m/s².

To find the frequency, we need to determine the value of g / L. Using the given values, we have: g / L = 9.8 / 2 = 4.9 m/s².

Now we can substitute this value back into the formula for frequency:

f = 1 / (2π) √(4.9) ≈ 0.11 Hz.

Therefore, the frequency of oscillation of the pendulum is most nearly 0.11 Hz.

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The lump of clay at 10 m/s has a larger initial momentum compared to the clay at 5 m/s. When the clay comes to a stop, the change in momentum for the clay at 10 m/s is greater than that of the clay at 5 m/s. Thus, the 1 kg lump of clay moving at 10 m/s experiences a greater impulse.

Impulse is defined as the change in momentum of an object and is calculated by multiplying the force exerted on an object by the time interval over which the force acts. In this case, impulse is given by the equation:

Impulse = Force × Time

Since we are comparing two scenarios with the same mass, the impulse depends solely on the velocity and time. The greater the change in velocity and the longer the time interval, the greater the impulse.

In the given scenario, the 1 kg lump of clay has a velocity of 10 m/s. Therefore, its initial momentum is given by:

Initial momentum = mass × initial velocity

                = 1 kg × 10 m/s

                = 10 kg·m/s

If this lump of clay comes to a stop, its final momentum would be zero. The change in momentum is therefore:

Change in momentum = final momentum - initial momentum

                 = 0 - 10 kg·m/s

                 = -10 kg·m/s

However, impulse is a scalar quantity, meaning it only represents magnitude. Therefore, the negative sign is disregarded, and the magnitude of the impulse is 10 kg·m/s.

Now let's consider the other scenario, where the lump of clay has a velocity of 5 m/s. The initial momentum in this case is:

Initial momentum = 1 kg × 5 m/s

                = 5 kg·m/s

If this lump of clay comes to a stop, its final momentum would be zero. The change in momentum is therefore:

Change in momentum = final momentum - initial momentum

                 = 0 - 5 kg·m/s

                 = -5 kg·m/s

Again, we disregard the negative sign and consider the magnitude of the impulse, which is 5 kg·m/s.

Comparing the two scenarios, we can conclude that the 1 kg lump of clay at 10 m/s has a greater impulse (10 kg·m/s) compared to the 1 kg lump of clay at 5 m/s (5 kg·m/s).

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a. Sidewalk

b. Train

c. Trees or buildings

d. Train

e. Hot air balloon

Answer:

Saturn is almost as big as Jupiter despite its smaller mass because Jupiter is a more dense gas giant than Saturn.

Explanation:

Answer:

sun, jupiter, earth, moon

Explanation:

how big they are

Answer:

sun, jupiter, earth, moon. sun

Explanation:

The sun would have the biggest gravity because it is the massiest.

Based on the mass of each planet, this is the correct answer.

Based on leah's informal experiment we can say, unbalanced forces from Joey pushing the car causes the car to change direction.

Forces that are opposite in direction and equal in size are termed as balanced forces. Since the car move across the table with constant speed, we can say acceleration is zero and net forece is also zero, until and unless Joey or Leah push the car. To change the direction and speed of the car, a net external force is required to be acted upon the car. A net external force by Joey is an unbalanced force which will change the direction and gives the speed to the car in opposite direction. Hence, it is an unbalanced force applied by the Joey that pushes the car in the other direction. Due to this force car starts to move back to Leah. Without, unbalanced force there will be no change in the direction of the car's motion or speed.

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AC ammeters and voltmeters typically read (d) average values in most cases.

AC ammeters are used to measure the average value of the alternating current (AC) flowing through a circuit. They provide an indication of the average current magnitude, which is important for determining the power consumption or evaluating circuit performance.

AC voltmeters, similarly, measure the average value of the alternating voltage (AC) across a circuit or component. They provide information about the average voltage magnitude, which is useful for assessing the voltage levels or analyzing circuit behavior.

It's worth noting that AC systems often deal with sinusoidal waveforms, and the average value of a sinusoidal waveform is zero. However, AC ammeters and voltmeters are designed to measure the root mean square (RMS) values of the AC quantities, which represent the equivalent DC values that would produce the same heating or power dissipation effects. The RMS value is proportional to the average value for a sinusoidal waveform and is the most commonly used measurement for AC ammeters and voltmeters.

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The new force acting between the charges in terms of F is k * \(\frac{q1^{2}q2^{} }{2d^{2} }\)

Force can be defined as the an agent that orchestrate a pull or push between two subject matter.

Force is very important to every physicist and the study of physics and it has been defined by different means and different scientist

In conclusion, The new force acting between the charges in terms of F is k * \(\frac{q1^{2}q2^{} }{2d^{2} }\)

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Explanation:

a) i) Calculation of the friction force:

The friction force can be determined using the equation:

friction force = coefficient of friction * normal force

The normal force is equal to the weight of the object, which can be calculated as:

normal force = mass * gravitational acceleration

where the gravitational acceleration is approximately 9.8 m/s².

normal force = 75 kg * 9.8 m/s² = 735 N

friction force = 0.4 * 735 N = 294 N

ii) Calculation of the acceleration of the body:

Now, we can calculate the acceleration using Newton's second law:

net force = mass * acceleration

Since the applied force and the friction force act in opposite directions, the net force can be calculated as:

net force = applied force - friction force

net force = 300 N - 294 N = 6 N

mass = 75 kg

6 N = 75 kg * acceleration

acceleration = 6 N / 75 kg = 0.08 m/s²

b) Explanation:

In part (a), we calculated the friction force to be 294 N and the acceleration of the body to be 0.08 m/s². The positive acceleration indicates that the body is moving in the direction of the applied force.

The friction force opposes the motion of the body and acts in the opposite direction to the applied force. In this case, the applied force of 300 N is greater than the friction force of 294 N. As a result, the net force acting on the body is 6 N in the direction of the applied force.

The small net force of 6 N, compared to the body's mass of 75 kg, results in a relatively low acceleration of 0.08 m/s². This indicates that the body will accelerate slowly in the direction of the applied force due to the presence of friction.

Overall, the friction force and the resulting acceleration of the body are determined by the coefficient of friction (μ) and the mass of the object. In this case, the body experiences a relatively high friction force, leading to a small acceleration.

Magnitude of the average velocity is 0.3 m/s.

To find the answer, we need to know about average velocity.

Thus, we can conclude that the average velocity is 0.3 m/s.

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Answer:

1.98 kg/m

Explanation:

5.94 divided by 3.00

Answer:

Explanation:

A analog signal requires more energy but i don’t know what digital is please let me know if you found the answer

The beetle's actual distance beneath the surface is 1.70 cm.

The given information states that the beetle appears to be 1.70 cm within the plastic. This means that the beetle is located at a distance of 1.70 cm from the outer surface of the cube of polystyrene plastic. However, the actual distance of the beetle beneath the surface is also 1.70 cm since it is embedded within the cube.

The phrase "appears to be" suggests that the observation of the beetle's position within the plastic is deceiving. The beetle is not deeper or closer to the surface than the given measurement. Therefore, the beetle's true depth beneath the surface is equivalent to the stated distance of 1.70 cm.

Distances and interpreting spatial relationships within objects like the embedded beetle.

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The required, if we think Hugo is more likely to be a professional football player rather than a professional ballroom dancer, we are applying the representativeness heuristic.

This heuristic involves making judgments based on how closely an individual fits a prototype or stereotype of a certain category. In this case, the stereotype of a professional football player being tall, muscular, and weighing more aligns with Hugo's characteristics. By relying on this mental shortcut, you may overlook other factors such as personal interest or skill set that could make Hugo more inclined to be a ballroom dancer.

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Electromagnetic waves consists of alternate electrical and magnetic fields.

Light is a electromagnetic wave. Hence in light wave, electrical and magnetic fields vibrate.

"The Skeptics' Guide to the Universe: How to know what's really real in a world increasingly full of fake" is a book title.

The book explores the topic of distinguishing genuine information from misleading or fake information in a world where misinformation is prevalent.

We can discuss some strategies mentioned in the book that can help individuals navigate this issue. Here are a few steps that can be taken:

Develop critical thinking skills: This involves being skeptical and questioning information before accepting it as true. It's important to examine the evidence, evaluate the source, and consider alternative viewpoints.

Verify sources: Check the credibility of the sources providing information. Look for reputable and reliable sources such as peer-reviewed journals, experts in the field, or trusted news organizations.

Fact-check information: Use fact-checking websites or resources to verify the accuracy of claims or news articles. This can help identify misinformation and prevent its spread.

Be aware of biases: Understand that everyone has biases, including ourselves. Recognize and evaluate your own biases, as well as those of the sources of information. This can help in identifying potential misleading or manipulative information.

Seek diverse perspectives: Expose yourself to a wide range of perspectives and opinions. Engage with different viewpoints to gain a more comprehensive understanding of a topic.

"The Skeptics' Guide to the Universe: How to know what's really real in a world increasingly full of fake" is a book that provides strategies for navigating through a world where misinformation is prevalent. By developing critical thinking skills, verifying sources, fact-checking information, being aware of biases, and seeking diverse perspectives, individuals can better discern what is real from what is fake in today's information-saturated environment.

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The International Space Station moves about once a year to get out of the way of dangerous debris. Critical parts of the station can withstand impact of objects as large as 1 cm, according to NASA. The agency didn't specify the size of the Cosmos 1408 fragment that posed a danger.

Answer:15 cm

Explanation: u had 10cm. them u had another 5cm

Answer:

Yes

Explanation:

Yes, this is a random error generating because of statistical constraint. We only have finite number of data points. As per this, if we plot our observation we will get a gaussian (inverse bell ) shaped curve with mean equal to central value.

Answer:

B) a leaf blown from a tree by the wind

Answer:

the answer is B A leaf being blown from a tree by the ground

Answer:

Speed of sound ways in railroad = 6,135.8 m/s

Explanation:

Given:

Distance cover by sound wave = 2,350 meter

Time taken by sound wave to cover distance = 0.383 seconds

Find:

Speed of sound ways in railroad

Computation:

Speed = Distance / Time

Speed of sound ways in railroad = Distance cover by sound wave / Time taken by sound wave to cover distance

Speed of sound ways in railroad = 2,350 / 0.383

Speed of sound ways in railroad = 6,135.77

Speed of sound ways in railroad = 6,135.8 m/s

The corresponding angle of refraction for the light from the floodlight that is transmitted into the water.

θ_B = arctan(n2/n1)

where n1 and n2 are the refractive indices of the two media involved, in this case, air and water. The refractive index of air is approximately 1, and the refractive index of water is approximately 1.33. Plugging these values into the equation, we can calculate the Brewster's angle for air-to-water reflection:

θ_B = arctan(1.33/1) ≈ 53.13 degrees

Therefore, the angle of reflection at which the light becomes completely polarized is approximately 53.13 degrees.

n1 * sin(θ_i) = n2 * sin(θ_r)

where n1 and n2 are the refractive indices of the two media, θ_i is the angle of incidence, and θ_r is the angle of refraction.

For this case, the angle of incidence is equal to the Brewster's angle (θ_B), which we calculated in part (a). Plugging the values into Snell's law, we can solve for the angle of refraction (θ_r):

1 * sin(θ_B) = 1.33 * sin(θ_r)

sin(θ_r) = sin(θ_B) / 1.33

θ_r = arcsine(sin(θ_B) / 1.33)

θ_r ≈ arcsine(sin(53.13°) / 1.33) ≈ 40.12 degrees

Therefore, the corresponding angle of refraction for the light that is transmitted into the water is approximately 40.12 degrees.

The corresponding angle of refraction for the light that is transmitted into the water can be calculated using Snell's law, similar to part (b). However, in this case, the light is traveling from water to air, so we need to consider the refractive indices of water and air:

n1 * sin(θ_i) = n2 * sin(θ_r)

where n1 and n2 are the refractive indices of the two media, θ_i is the angle of incidence, and θ_r is the angle of refraction.

For this case, the refractive indices are reversed compared to part (b). Plugging the values into Snell's law, we can solve for the angle of refraction (θ_r):

1.33 * sin(θ_i) = 1 * sin(θ_r)

sin(θ_r) = sin(θ_i) / 1.33

θ_r = arcsine(sin(θ_i) / 1.33)

Since the angle of incidence (θ_i) is equal to the Brewster's angle (θ_B), we can use the same value calculated in part (a):

θ_r = arcsine(sin(53.13°) / 1.33) ≈ 40.12 degrees

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a. oxygen

The major atmospheric component that is chiefly a product of life processes is oxygen.
This is because oxygen is produced through the process of photosynthesis, which is carried out by plants and some microorganisms. During photosynthesis, these organisms convert sunlight, carbon dioxide, and water into oxygen and glucose. the atmospheric component of the global phosphorus cycle is much reduced in comparison to the atmospheric component of the carbon and nitrogen cycles. The atmosphere of Earth is composed of nitrogen (seventy eight%), oxygen (21%), argon (0.9%), carbon dioxide (zero.04%) and trace gases.[2] most organisms use oxygen for breathing; lightning and bacteria perform nitrogen fixation to supply ammonia that is used to make nucleotides.

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Answer:

The answer is C.19.8 m/s because it's their common velocity after the collision of the two cars.

Explanation:

Hello !

look at the attachment above ☝️ and if you have any questions you're welcome.

Answer:

7.37 * 10^ -5

Explanation:

Acellus

The force that is needed to accelerate the arrow is 49 Newtons.

To determine magnitude of the force needed to give a 0.25 kg arrow an acceleration of 196 m/s², we can use the equation of force:

F = ma

where F is the force, m is the mass, and a is the acceleration.

Given that m = 0.25 kg and a = 196 m/s², we can substitute these values into the equation and solve for F:

F = (0.25 kg)(196 m/s²)

F = 49 N

So the force needed to give a 0.25 kg arrow an acceleration of 196 m/s² is 49 N. This is the correct answer out of the options given.

To arrive at this answer we used Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. Thus, we were able to use the equation "F = ma" (where F is force, m is mass and a is acceleration) to solve for the force required to accelerate the arrow at 196 m/s².

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Answer:

Mental and physical health is fundamentally linked. There are multiple associations between mental health and chronic physical conditions that significantly impact people’s quality of life, demands on health care and other publicly funded services, and generate consequences to society.  The World Health Organization (WHO) defines: health as a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.   The WHO states that “there is no health without mental health.”

Nowhere is the relationship between mental and physical health more evident than in the area of chronic conditions. The associations between mental and physical health are:

1. Poor mental health is a risk factor for chronic physical conditions.

2. People with serious mental health conditions are at high risk of experiencing chronic physical conditions.

3. People with chronic physical conditions are at risk of developing poor mental health.

The social determinants of health impact both chronic physical conditions and mental health. Key aspects of prevention include increasing physical activity, access to nutritious foods, ensuring adequate income and fostering social inclusion and social support. This creates opportunities to enhance protective factors and reduce risk factors related to aspects of mental and physical health.

Understanding the links between mind and body is the first step in developing strategies to reduce the incidence of co-existing conditions and support those already living with mental illnesses and chronic physical conditions.

Explanation:

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