Collars that emit radio waves are sometimes placed on animals to find their location. Which is the BEST reason for using radio waves as a method of tracking the animals?

Engine size and mpg (miles per gallon) are the two attributes that are most weakly correlated

Engine size and mpg (miles per gallon) are the two attributes that are most weakly correlated. Engine size and mpg have a negative correlation, meaning as engine size increases, mpg decreases.

Acceleration and engine size have a positive correlation, meaning as engine size increases, acceleration also increases. This correlation is stronger than the correlation between engine size and mpg.

Acceleration and vehicle weight have a negative correlation, meaning as vehicle weight increases, acceleration decreases. This correlation is also stronger than the correlation between engine size and mpg.

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At 9:00 am, a tuna salad is taken out of the cooler, and at 11:00 am, it is set out for a buffet. The deadline for serving or discarding the tuna salad is 3:00 PM.

Tuna salad can be kept in the fridge for three to five days when properly refrigerated. How long can you leave tuna salad out in the open? When left out for longer than two hours at room temperature, tuna salad should be thrown away because bacteria grow quickly between 40 and 140 degrees Fahrenheit.

If the following conditions are met, it is OK to store cold food without ceramic heaters for more than four hours. requirements are satisfied Before being taken out of the temperature control, food must be kept at 41 degree Fahrenheit or lower. When the food is first received, label it with the expiration date.

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The Foundation's namesake, Dr. Martha Ripley, was an ardent supporter of expert medical treatment for both married and unmarried mothers and their newborns.

Since its founding in 1957, Ripley's grantmaking has focused on the welfare of women and children. Dr. Ripley was instrumental in starting the Minneapolis Maternity Hospital in 1886 and stayed involved in its issues until her death in 1912.

The facility, which was subsequently given the name Ripley Memorial Hospital, was the first in the city to establish a social services department, provide lessons on parenting and natural delivery, and allow young children to "room in" with their mothers.

The hospital's board decided to form the Ripley Memorial Foundation and donate the proceeds from the sale when it closed in 1956.

Therefore, The Foundation's namesake, Dr. Martha Ripley, was an ardent supporter of expert medical treatment for both married and unmarried mothers and their newborns.

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The right response is That dry air will get drier and the moisture will get even more moist.

Mass is a physical quantity. This unit of mass measuring is an object's weight. It is measurable in conventional mass units such milligrams, kilograms, and pounds. Although smaller things are measured in grams, the kilogram is the actual SI mass unit.

The best way to grasp mass is the amount of matter that any item or body is made of. There is mass in everything we are able to see. A table, a chair, your bed, the ball, a cup, or even air are examples of items with mass. Everything is therefore either lighter or heavy.

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The horizontal component of the ball's speed relative to the water is around 30.0 m/s.

The direction of movement of the body or item is defined by velocity. Speed is fundamentally a scalar number. Velocity is, in essence, a vector quantity. It is the pace at which distance changes. It is the displacement rate of change. The velocity of an object is the rate at which its location changes in relation to a frame of reference and is a function of time. Velocity is similar to a speed and direction of motion specification (e.g., 60 km/hr to the north).

Here,

To find the horizontal component of the speed with which the ball strikes the water, we need to consider both the velocity of the carrier and the horizontal component of the velocity of the ball.

The horizontal component of the speed of the ball relative to the water is given by:

v_bw = v_bs + v_ship

where:

v_bw is the horizontal component of the speed of the ball relative to the water

v_bs is the horizontal component of the velocity of the ball (5.00 m/s)

v_ship is the velocity of the carrier (25.0 m/s)

So, the horizontal component of the speed of the ball relative to the water would be:

v_bw = 5.00 m/s + 25.0 m/s = 30.0 m/s

The horizontal component of the speed of the ball relative to the water is approximately 30.0 m/s.

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The average velocity for the second half of the swim can be calculated is : v = d / t = l / t2

Change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occurs is called average velocity.

To determine the average velocity of athlete for the second half of the swim, you need to know  distance she covered and the time she took to cover it.

The distance covered in the second half of the swim is the length of the pool, l. The time taken for the second half of the swim is t2.

So, the average velocity for the second half of the swim can be calculated as follows:

v = d / t = l / t2

where d is the distance covered, t is the time taken, and v is the average velocity.

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The points of the hour hand, minute hand, and second hand cover 0.087 metres, 1.3 metres, and 85 metres in a 40-minute period, respectively.

The minute hand's tip completes one full rotation in 60 minutes, as we also know. Thus, it will finish the 25/60th of the circle in 25 minutes. The moved distance is therefore equal to 2r * 25/60 inches, or 11.78 inches.

The radius of the circle the point creates is equal to the distance it travels. the radius of the circle formed by the tip and the angle that is covered.

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The angle of take-off relative to the horizontal is 70.97 ° and the magnitude of the resultant velocity vector is 9.99 m/s.

The horizontal velocity = 9.47 m/s

The vertical velocity = 3.21 m/s

The resultant velocity is expressed by using Pythagoras as follows :

Resultant Velocity , V = √ Vx²  +  Vy²

Resultant Velocity , V = √ (9.47 m/s )² + ( 3.21 m/s)²

Resultant Velocity , V  = 9.99 m/s

The angle of take - off :

tan Ф = Vy / Vx

Ф = tan⁻¹ ( 9.47 / 3.21 )

  = 70.97 °

Thus, the angle is 70.97 ° .

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The distance between the masses is 1.14 x 10⁴ m.

option B.

The distance between the masses is calculated by applying Newton's law of universal gravitation.

Fg = Gm₁m₂ / R²

where;

R² = ( Gm₁m₂ ) / ( F )

R = √ [ ( Gm₁m₂ ) / ( F ) ]

R = √ [ ( 6.67 x 10⁻¹¹ x 7.86 x 10¹¹ x 1.12 x 10⁹ ) / ( 4.54 x 10² ) ]

R = 1.14 x 10⁴ m

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Longitudinally, all sound waves exist. Parallel to the wave's motion, energy is transmitted. Mechanics can produce longitudinal waves. Transverse electromagnetic waves are also possible.

The electromagnetic spectrum is a group of wave types that includes electromagnetic waves and has some similar characteristics. All electromagnetic waves have the same speed in a vacuum, which is the speed of light, or 300,000,000 metres per second, and are transverse waves that can pass through a vacuum.

To put it simply, a time-space-varying electric field creates a varying magnetic field at right angles to it, and the magnetic field creates an electric field at right angles to that as well. This process keeps going to create oscillations of the electric and magnetic field components, which are what make up electromagnetic waves.

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A ringing bell is sending a longitudinal wave to your ear. What else is true about the longitudinal wave? Check all that apply.

A. All sound waves are longitudinal.

B. Energy is transferred perpendicular to the wave’s motion.

C. Mechanical waves can be longitudinal.

D. Electromagnetic waves can be longitudinal.

E. Longitudinal waves require a medium to travel through.

The angular acceleration for the potter's wheel is 0.012 rad/s².

The equation for angular velocity with constant angular acceleration is given by:

ωf = ωi + αt

where ωf is the final angular velocity, ωi is the initial angular velocity (which is 0 in this case), α is the angular acceleration, and t is the time.

Plugging in the given values, we have:

0.30 rad/s = 0 + α x 25.0 s

Dividing both sides by 25.0 s, we get:

α = 0.30 rad/s / 25.0 s = 0.012 rad/s²

So the angular acceleration is 0.012 rad/s².

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Answer:

B) the surface has a high coefficient of friction

When an object is not moving despite an applied force, it means that the frictional force is equal to or greater than the applied force. A high coefficient of friction indicates that the frictional force is strong, making it difficult to move the object. In this case, the frictional force is equal to the 100 N of force that Devon is applying, so the coefficient of friction for the surface must be high.

Metals such as copper, aluminium, silver, and gold, graphite, electrolytes such as aqueous salt solutions, and semiconductors such as silicon and germanium are examples of materials that are typically good conductors of electricity.

The movement of electric energy or charge is known as electricity. It is a secondary energy source, meaning that we obtain it through the conversion of main energy sources like coal, natural gas, oil, nuclear power, and other natural sources. The flow of electrons between two places when there is a voltage differential between them constitutes electricity, which is a sort of energy that makes it possible to produce an electric current.

The electricity we use is a secondary energy source since it is produced by converting primary energy sources, such as coal, natural gas, nuclear energy, solar energy, and wind energy, into electrical power.  Despite being independent properties, voltage and current interact in electrical circuits. Both are necessary for the circuit to function properly. Current in a circuit flows due to the force of voltage.

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A fair general rule is that if a shock reaches 2,700 volts or more, the victim frequently dies or sustains serious injuries. When the voltage reaches above 11,000 volts, a victim typically dies.

Electrical engineering professor at the University college San Diego, Dr. Michael S. Morse, says but while 10,000 volt can be lethal in some situations, it is also feasible that something could have 10,000 voltages behind it and yet be reasonably safe.

Personnel would never print and post warning signs warning of danger from high voltage if the voltage posed no threat. In general, the idea that "current kills" is true. Electric current is what causes cardiac fibrillation, muscle freezing, and tissue burning.

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Explanation:

Yes, that is correct. Electric potential is a measure of the electric potential energy per unit of electric charge at a certain point in an electric field. It is often denoted by the symbol V and is measured in volts (V).

Answer:

When sunlight shines through an orange solution, the violet, blue and green wavelengths are absorbed. The other colors pass through. The transmitted light is the light we see, and it looks orange. Colored objects look the way they do because of reflected light.

Explanation:

The ratio of the ideal projectile distance on the moon to the same projectile distance on earth, moon/back, is approximately (the acceleration of gravity on the moon is 1.62 m/s², about one-sixth of the acceleration due to gravity on earth. for a given initial velocity v0  , and the specified launch angle θ0) is ⅙ (option B)

The initial velocity, launch angle, and acceleration due to gravity all affect a projectile's range. The formula for an ideal projectile's range is as follows:

R = v0²sin (2θ0) / g

Where,

v0 = the initial velocity (m/s)

θ0 = the launch angle

g = the acceleration due to gravity

The acceleration caused by gravity is 1.62 m/s² for the moon and 9.8 m/s² for the earth. Ranges on the moon and ranges on earth can be expressed as follows:

R moon / R earth = (1.62 sin (2θ0)) / g

sin (2θ0) = 1.62 / 9.8

Approximately ⅙

Consequently, an ideal projectile's range on the moon is around a sixth of its range on Earth.

The question is incomplete, it should be:

The acceleration due to gravity on the moon is 1.62 m/s², approximately a sixth of the value on earth. for a given initial velocity v0, and a given launch angle θ0, the ratio of the range of an ideal projectile on the moon to the range of the same projectile on earth, rmoon/rearth, will be approximately?

A. ⅓

B. ⅙

C. 1

D. 1/12

E. ⅕

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Two trains on the separate tracks move toward each other. Train 1 has speed of 123 km/h, train 2, speed of 66 km/h. Train 2 blows its horn, emitting a frequency of 560 hz. The frequency heard by the engineer on train 1 is 662.41 Hz.

Train 1 (observer) :

Speed = 109 km/h = 30.2 m/s

Train 2 (source) :

Speed = 99 km/h = 27.5 m/s

Train 2 emitting frequency = 500 Hz

The expression is as follows :

F = F' ( v + v1 / ( v - v2 )

Where

F' = 560 Hz

v is velocity of sound = 343 m/s

v1 = 30.2 m/s

v2 = 27.5 m/s

Frequency  = 560 ( ( 343 + 30.2 ) / 343 - 27.5 ))

Frequency = 560 × (373.2 / 315.5)

Frequency = 662.41 Hz

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Distance traveled in a given amount of time is equal to the average speed. utilizing the formula s=ut+21at2s=510+212102s=50+100=150m.

By understanding how far an object is from us, we may calculate its actual size. It is possible to calculate the space that an object takes up in the sky. The actual size of an object can then be determined by taking into account its distance. The further away something is, the smaller it appears.

A common metric length from around three feet, 3 inches is called a metre. This proves that in the metric system, a meter is a measuring unit. Objects up to one meter in length include yardsticks, baseball bats, and guitars. Distances in sporting events like run and swimming are also measured in meters.

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The cat spends equal amounts of time ascending and descending, it spends a total of approximately 0.449 s in the top 1 m of its jump.

To determine the time spent by the cat in the top 1 m, we need to find the time it takes to travel the first 1 m of its 3 m jump. The motion of the cat can be modeled as a vertical, projectile motion problem. The time it takes to travel a given vertical distance can be found using the formula:

[tex]$t = \sqrt{\frac{2d}{g}}$[/tex]

Where d is the vertical distance traveled and g is the acceleration due to gravity [tex](9.8 m/s^2)[/tex]. Plugging in d = 1m and g = [tex]9.8$ m/s^2[/tex], we find that the time it takes to travel the first 1 m is

[tex]$t = \sqrt{\frac{2 \cdot 1}{9.8}} = \sqrt{\frac{2}{9.8}} \approx 0.449s[/tex]

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Answer:

If you drop a 1 lb ball from 10 ft in the air into sand and measure the size of the crater, and then a 10 lb ball from 10 ft in the air and measure the size of the crater, you would expect to see that the crater created by the 10 lb ball is larger than the crater created by the 1 lb ball. This is because the larger mass of the 10 lb ball will result in a greater impact force upon hitting the sand, which in turn will cause a larger excavation of the sand and thus a larger crater.

No, they don't have the same acceleration because the thrown ball accelerates faster.

Acceleration is simply defined as change in velocity over time elapsed (a = Δv/t). An object is accelerating if it is slowing down, speeding up, or changing directions. Force can make objects accelerate. If an object is at rest or is moving at a constant velocity, then it's not accelerating.

Gravity in classical mechanics is defined as a type of force. Force of gravity is sometimes called weight. Weight is equal to mass times acceleration due to gravity (W = mg).

Both the ball and the rock are affected by Earth's gravity. However, since the ball's initial speed isn't zero, it moves faster than the dropped rock, and the ball will hit the ground first.

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So, with an acceleration of 2.35 m/s², the VW Beetle takes 11.38 seconds to reach 60.0 miles per hour. As a result, the top-fuel dragster's acceleration is 38.3 m/s².

The rate of change of velocity is defined as acceleration. Acceleration usually indicates that the speed is changing, however this is not always the case. When an item goes on a circular course with a constant speed, it is still accelerating since its velocity direction changes. Acceleration is the rate at which velocity varies over time, both in terms of speed and direction. A point or object travelling in a straight path is accelerated if it accelerates or decelerates.

Here,

a. To find the time it takes for the VW Beetle to reach 60.0 mi/h with an acceleration of 2.35 m/s², we can use the equation:

v = a * t

Where v is the final velocity, a is the acceleration, and t is the time. To convert 60.0 mi/h to m/s, we can use the conversion factor 1 mi/h = 0.447 m/s:

60.0 mi/h = 60.0 * 0.447 m/s = 26.82 m/s

So we can solve for t:

t = v / a = 26.82 m/s / 2.35 m/s² = 11.38 s

So it takes the VW Beetle 11.38 s to reach 60.0 mi/h with an acceleration of 2.35 m/s².

b. To find the acceleration of the top-fuel dragster, we can use the equation and the information given:

v = a * t

Where v is the final velocity, a is the acceleration, and t is the time. To convert 60.0 mi/h to m/s, we can use the conversion factor 1 mi/h = 0.447 m/s:

60.0 mi/h = 60.0 * 0.447 m/s = 26.82 m/s

And we know t = 0.700 s. So we can solve for a:

a = v / t = 26.82 m/s / 0.700 s = 38.3 m/s²

So it takes the VW Beetle 11.38 s to reach 60.0 mi/h with an acceleration of 2.35 m/s². So the acceleration of the top-fuel dragster is 38.3 m/s².

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A machine can increase force,  change force direction, increase velocity.

A machine is a physical system that use power to exert forces, regulate movement, and carry out an action. The phrase is frequently used to refer to both manmade devices that use engines or motors as well as natural biological macromolecules like molecular machines.

To make the process easier, machines are utilized. In general, it is believed that machines enhance the quantity of work done in order to do the task quickly. However, this is untrue because energy is a form that can only be transferred, not created or destroyed, as work is a form of energy.

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Size and SA:V are inversely related for a certain form. The ratio of a cube with sides of 2 cm is 3 cm1, which is half of a cube with sides of 1 cm.

The area is the area occupied by a this double flat surface. It has a square unit of measurement. A three-dimensional object's surface area is the area occupied by its outside surface.

A 3D object's surface is the entire area that all of its faces cover. For instance, the surface area of a cube is its amount if we wish to determine how much paint is needed to paint it. It is consistently expressed in square units.

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A substance's physical property is indeed a quality that can be seen or quantified without affecting the substance's identity. Color, density, toughness, boiling and melting points are examples of physical qualities.

Physical characteristics are characteristics that may be seen or quantified without modifying the makeup of the substance. Some examples include the freezing, melting, and boiling points as well as color, hardness, and fragrance.

Physical qualities are those that can be ascertained about a substance without altering its makeup. Physical qualities include traits like critical temperature, boiling point, density, reactivity, color, odor, etc.

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Answer:

Below

Explanation:

The vaulter's entire KE will be converted to PE to clear the bar (5-.9) = 4.1 m above the COM.

PE required = mgh = 70 ( 9.81)(4.1) = 2815.5 J

KE required will then be   2815.5  J

(As an aside:  = 1/2 mv^2 = 2815.5 = 1/2 ( 70)(v^2)   shows v = 9  m/s)

The statement of equipotential lines passing through a point perpendicular to the direction of the electric field at that point is true.

Equipotential fields are fields where every point in the field has the same electric potential. For an electric charge, the equipotential field is a spherical shell and the electric field lines are radial and always perpendicular to the equipotential field. Any electric charge transferred in the equipotential field requires no work.

In mathematics and physics equipotential refers to a region in space where every point in it has the same potential. In electricity, it can be defined as the position of points that have similar potential values. Equipotentials are often referred to as equipotential surfaces or fields, namely fields that have a set of points that are spread continuously and have similar potentials.

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The melting point of the clear supernatant is lower than for the 0 ° c of the original liquid when a solution is added to it.

The temperature at which a material becomes liquid or solid is known as the melting or freezing point of that substance. Depending on the degree of bonding in between particles plus their mass, various substances have varying melting points.

Water typically has a freezing point and melting point of 0 °C or 32 °F. If supercooling takes place or there are pollutants in the water that might cause freezing point elevation to happen, the degree may be lower.

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