the ? is the ratio of the 10-minute reading to the 1-minute reading taken on a dielectric absorption test.

Explanation:

The relationship between harmonics and resonance frequency in a piano is that the harmonics of the vibrating strings align with the resonance frequencies of the piano's soundboard and other components. This alignment allows the harmonics to be amplified and sustained, resulting in the characteristic and rich sound produced by the instrument.

If two vectors a and b are given such that their dot product a · b equals zero, then the vectors a and b are orthogonal or perpendicular to each other.

The dot product of two vectors a and b is given by the formula a · b = |a||b|cosθ, where |a| and |b| are the magnitudes of the vectors, and θ is the angle between them. If the dot product of a and b is zero, then cosθ = 0, which means that θ is equal to 90 degrees or π/2 radians. In other words, the vectors a and b are perpendicular to each other.

Furthermore, since a · b = 0, we can rearrange the equation to get |a||b|cosθ = 0. Since cosθ can never be zero unless θ is equal to 90 degrees or π/2 radians, we can conclude that either |a| or |b| (or both) must be zero. This means that either vector a or b (or both) has zero magnitude, which would make it a zero vector.

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The statement "the physician skips hand-washing because she’s in a hurry and just washed her hands in the previous patient visit" is false.

The physician should not skip hand-washing, even if they have recently washed their hands in the previous patient visit. Hand-washing is a critical practice to prevent the spread of infections and ensure patient safety.

Each patient interaction presents a new opportunity for potential cross-contamination and the transmission of pathogens. Even if the physician recently washed their hands, they should still follow proper hand hygiene protocols, including washing hands with soap and water or using hand sanitizer, before and after each patient encounter.

Hand-washing should be performed regardless of time constraints or previous hand hygiene practices.

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Answer:

i did not go to isreal

Explanation:

Answer:

i've actually been so maybe this will  help you

Explanation:

My favorite thing about Israel was their beaches. The water is really beautiful and clear as day. I really enjoyed the beach because back home where im from the beach water is very dirty, so i felt like being in Israel with the clear waters just made me feel clean and whole . I had alot of food there but their hummus was amazing, it was the best i ever had. From that experience i learned to take care of myself. In Israel , i felt like a different person and i noticed that alot of people would come out and enjoy what they have which is something that not alot of us do very often. To this day i make sure that i spend time with myself and make sure im at a good mindset. its ok to treat yourself :)

Answer:

C. Mechanical Energy

Explanation:

The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy.

Answer:

greater.

Explanation:

Please mark as brainliest

Answer:

C

Explanation:

lightning is an electrostatic discharge

Answer:

CALCIUM IDENINE ADEININE AND PHOSPHATE

Explanation:

Answer:

1) The Newton's law the Hulk is most closely demonstrating is the Third Law of motion

Newton's third law of motion states that action and reaction are equal and opposite.

2) The reason why the Newton's Law the Hulk is most closely demonstrating is the Newton's Third Law of Motion is that according to Newton's Third Law of motion, forces exist in pairs, the action of the Hulk when he leaps upward by pushing against the the Earth (which can be assumed stationary in relation to the Hulk), is equal to the reaction of the Earth, which moves down slightly, away from its initial position.

However, due to the large mass of the Earth, compared to the mass of the Hulk, the downward motion of the Earth due to the reaction force (equal to the force with which the Hulk leaps) is negligibly small, such that the Earth can absorb the Hulk's leap force by reacting mainly locally, at the leap point  by forming a crater, while the Earth in general, remains in the same place

Explanation:

\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)

According to snells law :

\(\qquad \sf  \dashrightarrow \: n_1 ×sin \: i = n_2 \times sin \:r \)

[ n corresponds to the refracting index of a medium ]

now, as we know :

Now, let's proceed according to the formula ~

\(\qquad \sf  \dashrightarrow \: 1 \times \sin(40 \degree) = 1.33 \times \sin(r) \)

\(\qquad \sf  \dashrightarrow \: \sin(r) = \cfrac{1 \times sin \: r}{1.33} \)

[ sin 40° = 0.6428 ]

\(\qquad \sf  \dashrightarrow \: \sin(r) = \cfrac{0.6428}{1.33} \)

\(\qquad \sf  \dashrightarrow \: \sin(r) \approx \cfrac{1}{2} \)

\(\qquad \sf  \dashrightarrow \: r \approx 30 \degree\)

Hence, the angle of refraction is equal to 30°

If one travels away from the center of a mid-ocean rift (ridge) zone, the rock on either side of the rift zone gets progressively younger.

Hence, the correct option is A.

When one travels away from the center of a mid-ocean rift zone (ridge), the rock on either side of the rift zone gets progressively younger.

This is because at the mid-ocean ridge, new oceanic crust is formed through volcanic activity. As tectonic plates move away from the ridge, new magma rises to fill the gap, solidifies, and forms new rock.

Therefore, the rocks farther away from the ridge are younger compared to the rocks closer to the ridge.

Hence, the correct option is A.

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Answer:

Newton's Third Law states that "For every action, there is an equal and opposite reaction." An example of this law is the following scenario:

Imagine you are pushing a heavy box across the floor. According to Newton's Third Law, the box will exert an equal and opposite force back on you, making it harder to push. The more force you apply to the box, the greater the force it will exert back on you. This reaction force is what makes it difficult to push the box. The same idea applies when jumping off a diving board or jumping on a trampoline - the force you apply to the board or trampoline is equal and opposite to the force it applies back on you.

Answer:

a = 5 m / s²   and    x = 562.5 m

Explanation:

Let's apply the kinematics relations

          v = v₀ + at

          v² = v₀² + 2a x

In this case, as the car stops, its final speed is zero (v = 0) and the acceleration must be opposite to the speed, that is, negative

           0 = v₀ - a t

           a = v₀ / t

let's calculate

           a = 75/15

           a = 5 m / s²

let's look for the distance

           0 = v₀² - 2a x

           x = v₀² / 2a

let's calculate

           x = \(\frac{75^2}{2 \ 5 }\)

           x = 562.5 m

The acceleration of the ride, given the data from the question is 16 m/s²

This is the force that acts to keep an object moving in a circle. Mathemathically, it is expressed as:

F = ma

But

a = v² / r

Thus,

F = mv² / r

Where

From the question given above, the following data were obtained:

The acceleration can be obtain as follow:

a = v² / r

a = 8² / 4

a = 64 / 4

a = 16 m/s²

Thus, the acceleration is 16 m/s²

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Speed varies with Distance travelled w.r.t time

\(\boxed{\sf Speed=\dfrac{Distance}{Time}}\)

Whereas velocity varies with displacement w.r.t time.

\(\boxed{\sf Velocity=\dfrac{Displacement}{Time}}\)

The final velocity of the fisherman and the boat after the jump is approximately 1.322 m/s to the East.

To solve this problem, we can apply the principle of conservation of momentum. According to this principle, the total momentum before the jump is equal to the total momentum after the jump.

Let's assume the final velocity of the fisherman and the boat after the jump is Vf. The initial momentum before the jump is the momentum of the fisherman, and the final momentum after the jump is the combined momentum of the fisherman and the boat.

The momentum of an object can be calculated using the equation

Momentum = mass × velocity

Initially, the fisherman has a mass of 80 kg and a velocity of 3.6 m/s to the West. The momentum of the fisherman before the jump is

Initial momentum of the fisherman = 80 kg × (-3.6 m/s) (negative since it is in the opposite direction of the chosen positive direction)

The rowboat has a mass of 138 kg and is at rest, so its initial momentum is zero.

After the jump, the combined mass of the fisherman and the boat is 80 kg + 138 kg = 218 kg. The final momentum of the fisherman and the boat is:

Final momentum of the fisherman and the boat = 218 kg × Vf

According to the conservation of momentum, the initial momentum equals the final momentum:

Initial momentum of the fisherman = Final momentum of the fisherman and the boat

80 kg × (-3.6 m/s) = 218 kg × Vf

Now, we can solve for Vf, which represents the final velocity of the fisherman and the boat after the jump:

Vf = (80 kg × (-3.6 m/s)) / 218 kg

Vf = -1.322 m/s

The negative sign indicates that the fisherman and the boat are moving in the opposite direction of the chosen positive direction (East). Therefore, the final velocity of the fisherman and the boat after the jump is approximately 1.322 m/s to the East.

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Answer:

An ellipse with the Sun at one of the foci of the ellipse

Explanation:

Planets have elliptical orbits

Answer:

Electromagnetic Radiation

Explanation:

Answer: 90 Km

Explanation:

15 Km/hr X 6/hr = 90Km

88km/h/129.1km is 0.68h

Explanation:

it will take 0.68h to travel 129.1km of distance

Answer:

Look below.

Explanation:

If additives are having negative effects on health and the environment, it would be wise to not use detergents containing these additives. These additives could threaten living things such as humans and animals.

There is concern that extra additives in detergents can have negative health and environmental impacts, then it would be very unwise to use detergents containing these additives

It can be defined as the origination of the contaminant substance that poisonous or harmful to our natural environment.

There are several types of pollution that exist in our nature depending on the state and composition of the contaminant, for example, water pollution can exist due to the eutrophication process.

It would be quite unwise to use surfactants that include these additional ingredients since there is fear that they might have a harmful influence on your well-being and the environment.

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The acceleration of the string is 4.3 m/s2.

We regard the positive direction for the vertical motion of mass m1 to be downward and the positive direction for the motion of mass m2 on the incline to be to the right and parallel to the incline.

There are only two ways to accelerate: changing your speed or changing your direction, or changing both. This is because velocity is both a speed and a direction.

Changing the speed at which an object is travelling is what acceleration is all about. A substance is not accelerating if its velocity is not changing. The information on the right depicts an object that is speeding as it moves northward.

Therefore, The acceleration of the string is 4.3 m/s2.

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.

Answer:

0.012  seconds

Explanation:

The time at which the soccer player maintain contact with the ball is as follows:

Given that

Change in momentum = 11 kg.m.s^-1

The Net force applied = F = 910 N

Now the following formulas should be applied:

For acceleration:

\(a = \frac{\triangle v}{\triangle t} \\\\\triangle v = a \triangle t\)

For momentum

\(\triangle p = m\triangle v\\\\\triangle p = ma\triangle t\\\\\triangle p = f\triangle t\\\\\triangle t = \frac{\triangle p}{F}\)

Now

Put  the values to the above formula

= 11 ÷ 910

= 0.012 seconds

Answer:

The answer is: C. the star must be close enough to the Sun to show measurable parallax.

Explanation:

In the field of astronomy, parallax is called stellar parallax in distant stars.

The stars for which parallax measurements have been made are those that are relatively close to the sun on the galactic scale.

The answer is: C. the star must be close enough to the Sun to show measurable parallax.

(a) The ultimate BOD of the wastewater at the 20°С is 253.3 mg/L. (b) The reaction rate constant (base e) of the wastewater at 15°C is 0.1356/day. (c) The BODs of the wastewater at 15°C is 128.7 mg/L.

a. Ultimate BOD of the wastewater at 20°C:
The ultimate BOD (BODu) is the amount of oxygen required for complete oxidation of the organic matter in the wastewater. It can be calculated using the formula BODu = BODs / (1 - e^-kt), where BODs is the initial BOD, k is the reaction rate constant, and t is the time in days.
Plugging in the given values, we get:
BODu = 160 mg/L / (1 - e^-(0.20/day)(5 days))
BODu = 160 mg/L / (1 - 0.3679)
BODu = 160 mg/L / 0.6321
BODu = 253.3 mg/L

b. Reaction rate constant (base e) of the wastewater at 15°C:
The reaction rate constant at a different temperature can be calculated using the formula k₂ = k₁ · θ^(T₂ - T₁), where k₁ is the reaction rate constant at the initial temperature (T₁), θ is the temperature correction constant, and T₂ is the new temperature.
Plugging in the given values, we get:
k₂ = 0.20/day x 1.135^(15°C - 20°C)
k₂ = 0.20/day x 1.135⁻⁵
k₂ = 0.20/day x 0.6778
k₂ = 0.1356/day

c. BODs of the wastewater at 15°C:
The BODs at a different temperature can be calculated using the formula BODs = BODu x (1 - e^-kt), where BODu is the ultimate BOD, k is the reaction rate constant at the new temperature, and t is the time in days.
Plugging in the values we calculated earlier, we get:
BODs = 253.3 mg/L x (1 - e^-(0.1356/day)(5 days))
BODs = 253.3 mg/L x (1 - 0.4919)
BODs = 253.3 mg/L x 0.5081
BODs = 128.7 mg/L

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The point group of a molecule is determined by factors such as the presence of a primary axis of rotation, inversion center, and mirror planes.

The point group is a concept in chemistry that describes the symmetry of a molecule. It helps us understand the arrangement of atoms in the molecule and predict its properties.

To determine the point group, we need to consider several factors such as the presence of a primary axis of rotation, an inversion center, and mirror planes.

a) If there is a primary axis of rotation, it means that the molecule can be rotated around an axis and still look the same. The axis can have different rotation angles, such as 2-fold, 3-fold, 4-fold, etc. The number of times the molecule repeats itself during a full rotation is called the rotational symmetry. For example, if a molecule has a 3-fold axis of rotation, it means that it repeats itself three times during a full rotation of 360 degrees.

b) An inversion center refers to a point in the molecule where we can imagine an inversion operation occurring. This means that if we reflect the molecule through that point, it will look the same.

c) Mirror planes are imaginary planes that divide the molecule into two halves, and if we reflect one half through the plane, it will overlap perfectly with the other half.

Now, let's apply these concepts to the given scenarios:

h) If the structure in f) is in the "Z conformation" instead of the "E conformation," it means that two similar groups are on the same side of a double bond. This arrangement does not affect the determination of the point group, as the Z or E conformation refers to the arrangement of substituents and not the symmetry of the molecule.

i) If the aryl rings in g) are staggered and not eclipsed, it means that the rings are not directly on top of each other. This arrangement also does not affect the determination of the point group, as the staggered or eclipsed conformation relates to the relative positions of the rings and not the overall symmetry of the molecule.

To summarize, the point group of a molecule is determined by factors such as the presence of a primary axis of rotation, inversion center, and mirror planes. The conformation or arrangement of substituents or rings does not influence the determination of the point group.

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Answer: \(8\) μc

have: 2μF = \(2.10^{-6}\) F

the charge on this capacitor is \(2.10^{-6}.4=8.10^{-6}(c)=8\)(μc)

Explanation:

After considering the given data the height from which the gannet dived is approximately 51.84 m.

To evaluate the height from which a gannet dived if it hits the water at 32 m/s, assuming that the gannet was motionless before starting its dive, we can apply the law of conservation of energy, which projects  that the initial potential energy of the gannet is equivalent to its final kinetic energy prior to hitting the water. Then, we can write:
\(mgh = (1/2)mv^2\)
Here:
m = mass of the gannet
g = acceleration due to gravity
h = height from which the gannet dived
v = velocity of the gannet just before hitting the water
Considering that the mass of the gannet is 1 kg, and applying substitution of the given values, we get:
\((1 kg)(9.8 m/s^2)(h) = (1/2)(1 kg)(32 m/s)^2\)
\(h = (1/2)(32 m/s)^2 / (9.8 m/s^2)\)
h = 51.84 m
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The complete question is
A gannet is a seabird that fishes by diving from a great height. If a gannet hits the water at 32 m/s , what height did it dive from? Assume that the gannet was motionless before starting its dive.