how can you determine whether or not you need to undergo medical screening ?

Answer:

30 mph

Explanation:

1800 divided by 60

When an object travels at a constant speed with zero acceleration it is known as uniform rectilinear motion. Then its velocity is given by:

v = d / t

Where d is distance and t is time. Evaluating:

v = 1800 m / 60 s

Answer:

convection because it's not a conductor nor does it have radiation.

Explanation:

because its speed (v) is 0

Answer:

They are linearly proportional, i.e. the higher the ball is, the more potential energy it has.

Explanation:

The formula for gravitational potential energy is PE=mgh where m is mass of the object, h is height above the ground and g is the constant of gravitational acceleration (9.81 m=s²). So, if we increase the heigth, the potential energy also increases.

if a volume of air is warmed it expands due to increased translational kinetic energy as it expands it will start to cool.

We can then conclude that at constant pressure, temperature and volume are directly proportional: temperature increases, volume increases; decrease temperature, decrease volume.

In this case, the higher the temperature, the greater the kinetic energy that acts on the molecules of this gas, so when the gas expands, these molecules find more space and collide less, which will cause the gas to cool.

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As n is not an integer, so there will be no constructive interference between the speakers, if speaker A is moved by minimum distance.

Interference is a phenomenon in which two waves combine by adding  displacement together at every single point in space and time and to form a resultant wave of greater, lower, or same amplitude.

Wavelength of a 500 Hz sound wave is the speed of sound (about 343 m/s) divided by the frequency of the sound, which is 343/500 m = 0.686 m. Therefore, minimum distance you can move speaker A to achieve constructive interference along x-axis is 0.686/2 m = 0.343 m.

Given, distance between the speakers is 6m. Constructive interference will occur when path difference between two waves is equal to integer multiple of the wavelength. To achieve constructive interference, distance between the speakers + the distance moved by speaker A should be equal to n*wavelength where n is integer.

So, 6 + 0.343 = n* 0.686

n = (6+0.343)/0.686 = 8.8

As n is not an integer, so there will be no constructive interference between the speakers, if speaker A is moved by minimum distance.

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Explanation:

(1) predation

(2) competition

(3) autotrophs

(4) heterotrophs

The estimated age of the solar system is 4558 million years,

with N = 4.558.

The exponent n is a number that represents the power to which the base number is raised.

The exponential function is represented as xn, where x is the base and n is the exponent.

The question seeks to determine the value of n given N and the estimated age of the solar system.

The formula for calculating the value of n is:

N = 10n
Taking the logarithm of both sides, we get:
log(N) = log(10n)
Using the rule of logarithm, log(a^b) = b log(a), we can rewrite the equation as:
log(N) = n log(10)

Since log(10) = 1, we have:
n = log(N)

Substituting N with the estimated age of the solar system, we get:
n = log(4.558)

Using a calculator, we find that log(4.558) is approximately 0.6609.

the value of the exponent, n, is approximately 0.6609.

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Answer:

Yes, in case of uniform velocity

Explanation:

This is the case of uniform velocity. If a body covers equal displacement in equal intervals of time, then the velocity of a body is said to be ‘Uniform Velocity’. It meas that the velocity of a body remains constant during the motion and it does not change.

Since, acceleration is defined as the rate of change of velocity.

Therefore, if there is no change in velocity or in other words the change in velocity is zero, then the acceleration is also zero.

a = ΔV/t = 0/t

a = 0 m/s²

So, the acceleration of the body is 0 m/s², but it has a uniform velocity

Hence, it is possible for an object that, object with zero acceleration have velocity, which is the case case of uniform velocity.

Answer:

the sum of all the values which is 20 meters

Explanation:

total is everything combined

Distance is the sum of an object's movements, regardless of direction. The distance can be defined as the amount of space an object has covered, regardless of its starting or ending position. The total distance traveled is 20m.

A scalar quantity distance measures "how much ground an object has covered" while moving. The term "how far out of place an object is" relates to displacement, a vector number that describes the total change in the position of the object.

Distance is the length of an object's real route in its entirety. The International System of Units specifies that the unit of distance is the meter.

Total distance = 8 + 2 + 8 + 2

D = 20 m

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The resultant of the forces is 29 N. Option D

The resultant force is the force that acts in a given direction. Now we have two forces as enumerated in the question.

Thus;

Resultant = √(10)^2 + (20)^2 - [2 * 10 * 20 * cos (60 - 30))

Resultant = 29 N

Thus, the resultant of the forces is 29 N.

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Missing parts;

Two forces of magnitude 10N and 20N act on a body in directions making angles 30° and 60° respectively with x-axis what is the resultant force

A.17N

B. 19N

C. 23N

D. 29N

E. 37N​

The frequency at which the square object will swing back and forth is given by √(g / (4\(\pi ^{2}\) * L)), where g is the acceleration due to gravity.

To determine the frequency at which the square object will swing back and forth, we can use the formula for the period of a simple pendulum. The period (T) is the time taken for one complete oscillation.

For a simple pendulum, the period can be given by the formula:

T = 2π * √(L/g)

Where:

T = period

L = length of the pendulum (distance from the pivot to the center of mass)

g = acceleration due to gravity

In this case, the length of the pendulum is the distance from the pivot to the center of mass of the square object. Since the object is hung at its upper corner, the distance from the pivot to the center of mass is (L/2).

Therefore, the period of the square object can be expressed as:

T = 2π * √((L/2)/g)

T = 2π * √(L/2g)

To find the frequency (f), we can take the reciprocal of the period:

f = 1/T

f = 1 / (2π * √(L/2g))

f = √(g / (4\(\pi ^{2}\) * L))

So, the frequency at which the square object will swing back and forth is given by √(g / (4\(\pi ^{2}\) * L)), where g is the acceleration due to gravity.

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After the perfectly inelastic collision between a car and a truck, their combined mass of 4800 kg moves in a direction of approximately 45 degrees east of north with a velocity of about 9.68 m/s.

In a perfectly inelastic collision, two objects stick together and move as a single unit after the collision. To solve this problem, we can use the principle of conservation of momentum, which states that the total momentum before the collision is equal to the total momentum after the collision.

Before the collision, the car's momentum in the north direction is given by the product of its mass (1200 kg) and velocity 30 m/s, which is \(\(1200 \, \text{kg} \times 30 \, \text{m/s} = 36000 \, \text{kg}\cdot\text{m/s}\)\). The truck's momentum in the east direction is \(\(3600 \, \text{kg} \times 15 \, \text{m/s} = 54000 \, \text{kg}\cdot\text{m/s}\)\).

Since the collision is perfectly inelastic, the two vehicles stick together. The total mass after the collision is \(\(1200 \, \text{kg} + 3600 \, \text{kg} = 4800 \, \text{kg}\)\). To find the velocity after the collision, we divide the total momentum after the collision by the total mass: \(\(\frac{36000 \, \text{kg}\cdot\text{m/s} + 54000 \, \text{kg}\cdot\text{m/s}}{4800 \, \text{kg}} \approx 22.5 \, \text{m/s}\)\).

The direction of the final velocity can be found by using trigonometry. Since the car was initially heading north and the truck was heading east, the angle between the resultant velocity vector and the north direction is given by \(\(tan^{-1}(\frac{15}{30}) \approx 26.6^\circ\)\). Therefore, the angle between the resultant velocity vector and the east direction is \(\(90^\circ - 26.6^\circ = 63.4^\circ\)\). Thus, the velocity of the combined mass after the collision is approximately 22.5 m/s at an angle of about 63.4 degrees east of north.

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Answer:

If I'm not wrong; I think the answer is A

Explanation:

A. Increasing kinetic energy

A capacitor is a passive electronic component that stores and releases electrical energy. It consists of two conductive plates separated by an insulating material called a dielectric. Formula to calculate the peak current through a capacitor: Peak Current = (Peak Voltage) / (Capacitive Reactance).

Capacitive Reactance formula: Xc = 1/2πfC, where f is the frequency in Hz, and C is the capacitance in farads.

Substituting the given values:Capacitive Reactance = Xc = 1/(2πfC) = 1/(2 × π × 100 × 0.9 × 10^(-6))= 1767.15 ohms (approximately).

Peak Current = (Peak Voltage) / (Capacitive Reactance)= 24 V / 1767.15 Ω= 0.0136 A ≈ 13.6 mA.

Therefore, the peak current through the 0.90 μF capacitor is approximately 13.6 mA.

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Answer:

insulator

Explanation:

it keeps heat in not moves it

I won't touch the object because there is a warning sign and that means you stay out if it because it is a danger sign that High Resistance Material that means it is dangerous.

The buoyant force experienced by an object is equal to the weight of the fluid displaced by the object. The density of a liquid is defined as its mass per unit volume.

When a liquid is heated, its molecules gain kinetic energy and move faster, which causes the average distance between molecules to increase, resulting in a decrease in density.

Conversely, when a liquid is cooled, its molecules slow down and pack closer together, resulting in an increase in density.

When two barrels of the same size and shape are filled with the same liquid at different temperatures, the one filled with the colder liquid will float higher than the one filled with the hotter liquid.

This is because the colder liquid has a higher density, which means it will displace more fluid and experience a greater buoyant force.

As a result, the colder liquid will provide more support to the barrel, causing it to float higher in the same fluid than the barrel filled with the hotter liquid.

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Answer:

See the explanation below.

Explanation:

Newton's third law states that any force applied to a body generates a reaction equal and in opposite direction to the original Force.

In order to better understand how a person's movement is generated when walking, we will analyze the attached image below, where we see the forces acting.

The red vector goes in the direction of the person's movement, this force vector pushes the person to move forward.

Answer:

Chemical energy is energy stored in the bonds of atoms and molecules. ...

Mechanical energy is energy stored in objects by tension. ...

Nuclear energy is energy stored in the nucleus of an atom—the energy that holds the nucleus together. ...

Gravitational energy is energy stored in an object's height.

Answer:

Nuclear power

Electricity

Mechanic

Gravity

Explanation:

The kangaroo's horizontal speed will be 9.7 m/s and its departure speed will indeed be 10.65 m/s.

By observing the pace at which this compressed region moves through the medium, we may determine the sound speed. The sound wave travels at a speed of around 343 meters per second in low humidity at 20 degrees Celsius.

The following equation relates the distance to the direction and initial velocity:

d = [v₀²sin2θ]/g, where θ – the angle of the jump.

Thus, v₀² = gd / (sin2θ) = (9.8×8)/0.69 = 113.62

v₀ = 10.65 m/s ( the take off speed).

The horizontal velocity equals:

vₓ = v₀cos 22° = 10.65 m/s × 0.92 = 9.7 m/s

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1 meter = 39.37 inches

Then the meter stick is 39.37 inches long.

(a) Leak before break is a concept of designing the system or structure to minimize the risk of sudden catastrophic failure due to cracks.

The concept is to create a design that allows the development of cracks, and before the crack gets to a critical size, the system or structure should be able to detect the crack or leak. There are three stages in a leak-before-break condition:

First stage - Crack initiation: In this stage, cracks start to develop, but there is no effect on the system or structure's performance.

Second stage - Slow Crack Growth: In this stage, the crack's growth is slow, and the crack's effects on the system or structure are minimal.

Third stage - Rapid Crack Propagation: In this stage, the crack grows rapidly, and it could cause a catastrophic failure of the system or structure.  

(b) Longitudinal stress, σl = (pi x di^2)/4tσl = (28.75 x 10^6 x (0.08^2))/4 x 0.01σl = 58000000 Pa Hoop stress, σH = (pi x di x p)/2tσH = (28.75 x 10^6 x 0.08)/2 x 0.01σH = 11500000 Pa

(c) Critical crack size can be calculated as; ac = ((KIc^2 x Y)/(σpi))^(1/2)ac = ((23^2 x 0.7)/(28.75 x 10^6 x pi))^(1/2)ac = 1.6 x 10^-3 m

The crack is stable since the size of the crack is less than the critical crack size.

(d) Yes, the condition corresponds to a 'leak before break since the hemispherical crack's growth is slow, and the cylinder could detect it and initiate repairs before the cylinder fails catastrophically.

(e) No, the design will not be 'leak before break since the cheaper aluminum alloy's critical crack size is smaller than the crack's size. Therefore the cylinder will fail catastrophically.

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With 4.3 m/s velocity, is the cheetah running.

velocity= distance/time

distance=27.6 m

time=6.3 s

velocity=27.6 m/6.3 s

velocity=4.3 m/s

A vector number known as velocity describes "the pace at which an item changes its location." Imagine a person moving quickly, taking one stride ahead, one step back, and then beginning from the same place each time. A vector quantity is velocity. As a result, velocity is aware of direction. One must consider direction while calculating an object's velocity. Saying that an item has a velocity of 55 miles per hour is insufficient. The direction must be included in order to adequately characterize the object's velocity. Simply said, the velocity vector's direction corresponds to the motion of an item.

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Adding a loop after the tallest hill in order to maximize the kinetic energy of the car change to the model would allow the toy car to travel over all three hills. Therefore, the correct answer is option A.

The toy car stopping at point X indicates that it lacks sufficient energy to overcome the potential energy barriers of the subsequent hills. In order to allow the toy car to travel over all three hills, we need to provide it with more kinetic energy.

Therefore, adding a loop after the tallest hill could provide the car with enough kinetic energy to overcome the subsequent hills. Option B, which orders the hills from shortest to tallest, would not provide the car with enough potential energy to overcome the tallest hill, let alone the subsequent hills.

On the other hand, option C, which orders the hills from tallest to shortest, would provide too much potential energy to the car at the beginning, resulting in the car overshooting the first hill and losing energy in the process.

In conclusion, adding a loop after the tallest hill would be the most appropriate change to the model to allow the toy car to travel over all three hills. Therefore, the correct answer is option A.

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Answer:

S. offspring recieve a mix of genes from two different parents

Offspring acquire genes that are exactly the same as one parent’s genes. Option B is correct.

Given that,
To choose the statement best explains the genetic variation that results from sexual reproduction.

Sexual reproduction is the process of creating new organisms by combining the genetic details of two individuals of different genders. The genetic details in most animals is carried on chromosomes in the nucleus of reproductive cells called gametes, which unite to form a diploid zygote.

Here,
The solution is due to the fact that each parent has two distinct sets of genes. Furthermore, each parent only passes on half of their DNA to their offspring. And that the half that is passed on is arbitrary. All of this ensures that each child is born with a distinct set of genes.

Thus, Offspring acquire genes that are exactly the same as one parent’s genes. Option B is correct.

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