what is a risky behaviour​

Answer:

Astronomers think there are between 1.1 and 1.9 million asteroids in the solar system.

Explanation:

The current sigma level of the overall hospitality service cannot be determined without additional information.

To calculate the sigma level, we need to know the number of defects per million opportunities (DPMO). However, we don't have enough information to calculate it. We need to know the total number of opportunities for defects in the hospitality service. This would include things like the number of meals served, rooms cleaned, and interactions with staff. Without this information, we cannot calculate the DPMO or the sigma level.

Without more information on the total number of opportunities for defects, we cannot determine the sigma level of the overall hospitality service. However, it is clear that there were 1,434 complaints out of 138,600 patients treated, which suggests that the rate of complaints was low. It may be useful to investigate the types of complaints to identify areas for improvement in the hospitality service.

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Answer:

Vx=15.3*cos65°=6.47m/s

Explanation:

Vx=15.3*cos65°=6.47m/s

Vy=15.3*sin65°=13.87m/s

Answer:

S = Vo t + 1/2 g t^2     where g is in opposite direction to Vo

564.2 = 225 t - 4.9 t^2

4.9 t^2 - 225 t + 564.2 = 0

t^2 - 45.92 + 115.1 = 0       quadratic equation

t = 2.665       one solution

Check:

225 * 2.665 - 4.9 * 7.102 = 564.8      would need more significant figures for exact match

Answer:

i wanna say 11 forgive me if wrong.

Explanation:

The sphere will become negatively charged and attract positively charged objects due to the transfer of electrons from earth.

When the negatively charged rod is brought close to the uncharged sphere, the electrons in the sphere are repelled to one side, leaving the other side positively charged.

If the sphere is momentarily earthed, the excess electrons are transferred to the earth, leaving the sphere neutral.

When the rod is removed, the electrons that were initially repelled will move back towards the positively charged side of the sphere, making it negatively charged.

The sphere will then attract positively charged objects due to the imbalance of charges.

This is known as electrostatic induction, which is the process of charging an object by bringing it near a charged object without direct contact.

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The shortest distance in which you can stop an automobile by locking the brakes is 59.3m

The frictional force acting on the car is

F(f) = -μmg

where

μ = 0.81 is the coefficient of friction

m is the mass of the car

g = 9.8 m/s^2 is the acceleration due to gravity

According to Newton's second law, the acceleration of the car is equal to the frictional force divided by the mass, so:

a = F(f)/m = -μg = -(0.81) (9.8m/s²) =

-7.9m/s²

So we can find the distance travelled by the car using the equation

v^2 - u^2 = 2ad

where v = 0 is the final velocity of the car, when it comes to a stop

u = 30.6 m/s is the initial velocity

Solving the equation for d, we find

d = v^2 - u^2/2a = 0-(30.6m/s)^2/2(-7.9m/s^2) = 59.3m

Hence, The shortest distance in which you can stop an automobile by locking the brakes is 59.3m

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A handy piece of equipment that can be used for spreading open thimbles, tightening lags, and assisting in wrapping dead-end grips onto a cable is a cable grip puller.

A cable grip puller is a specialized tool designed to provide a firm grip and leverage when working with cables. It typically consists of a handle or grip portion and a set of jaws or clamps that can be adjusted to accommodate different sizes of thimbles or lags. The puller allows for the spreading open of thimbles, which are metal sleeves used to protect and reinforce the cable ends.

Additionally, the grip puller's adjustable jaws or clamps can be used to tighten lags, which are screws or bolts used to secure cable fittings or fixtures. The tool provides a secure grip and the necessary torque for tightening the lags effectively.

Furthermore, a cable grip puller can assist in wrapping dead-end grips onto the cable. Dead-end grips are devices used to secure the cable ends to support structures or equipment. The puller aids in applying the necessary tension and ensuring a proper and secure grip on the cable.

Overall, the cable grip puller is a versatile and practical tool that facilitates various tasks involved in cable installation, maintenance, and securing cable ends. Its design and functionality make it a valuable asset for professionals working with cables in various industries.

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Answer:

C

Explanation:

The rock takes 8.16s to return to its release point. Given that the elastic band provides a speed of 40m/s to the rock in 10 cm stretch.

Initial speed of the rock, u = 40m/s

Final position of the rock s = 0m taking the release point as reference. The rock takes 8.16s to return to its release point. Given that the elastic band provides a speed of 40m/s to the rock in 10 cm stretch.

Nuclear energy is a useful source of power but has disadvantages. The disadvantage of nuclear energy is it produces dangerous waste.

Initial speed of the rock, u = 40m/s

Final position of the rock s = 0m taking the release point as reference

From the second equation of motion:

solving above we get:

t = 0s or t = 8.16s,  t =0  seconds is neglected since it represents the initial position which is the same as the final position at t = 8.16s

So, the rock takes 8.16 seconds to return to the release point.

Therefore, The rock takes 8.16s to return to its release point. Given that the elastic band provides a speed of 40m/s to the rock in 10 cm stretch.

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Nicolaus Copernicus was the first person to propose the heliocentric model of the solar system, in which the Sun, not the Earth, is at the center.

Copernicus lived during the Renaissance and was an astronomer and mathematician. He proposed his heliocentric model in his book "De Revolutionibus Orbium Coelestium" (On the Revolutions of the Celestial Spheres) published in 1543. In this model, Copernicus argued that the Earth and the other planets revolve around the Sun, and not the other way around as was commonly believed at the time. This challenged the geocentric model of the universe, which placed the Earth at the center.

Copernicus' heliocentric model was based on observations and calculations he made using instruments like the astrolabe and the armillary sphere. He also relied on the work of earlier astronomers like Aristarchus of Samos and Ptolemy. Copernicus' model helped to explain phenomena like retrograde motion and the varying brightness of planets.

Copernicus' heliocentric model was a major shift in the way people thought about the universe, and paved the way for later scientific discoveries. It challenged long-held beliefs and led to a greater understanding of our place in the cosmos. Copernicus' work is considered a cornerstone of modern astronomy.

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A projectile is fired from a tank with initial speed 400 m/s,the two angles of elevation that can be used to hit the target 3000 m away are approximately 0.144 radians (or 8.26 degrees) and 2.997 radians (or 171.74 degrees).

To find the two angles of elevation that can be used to hit a target 3000 m away, we can use the equations of projectile motion. The angles of elevation correspond to the launch angles at which the projectile will reach the target.

Let's denote the initial speed of the projectile as v0 = 400 m/s and the horizontal distance to the target as R = 3000 m.

The horizontal and vertical components of the projectile's velocity are given by:

Vx = v0 * cos(theta)

Vy = v0 * sin(theta)

where theta is the launch angle.

The time of flight, T, is determined by the vertical motion of the projectile and can be calculated using the equation:

T = (2 * Vy) / g

where g is the acceleration due to gravity (approximately 9.8 m/s²).

The horizontal range, R, is determined by the horizontal motion of the projectile and can be calculated using the equation:

R = Vx * T

Substituting the expressions for Vx and T, we have:

R = v0 * cos(theta) * [(2 * v0 * sin(theta)) / g]

Simplifying the equation, we get:

R = (2 * v0^2 * sin(theta) * cos(theta)) / g

Now we can solve this equation to find the launch angles theta that satisfy the given range R.

Rearranging the equation, we have:

sin(2 * theta) = (R * g) / (2 * v0^2)

Taking the inverse sine of both sides, we get:

2 * theta = arc sin((R * g) / (2 * v0^2))

theta = (1/2) * arc sin((R * g) / (2 * v0^2))

Now we can substitute the given values to calculate the two angles of elevation:

theta₁ = (1/2) * arc sin((R * g) / (2 * v0^2))

theta₂ = π - theta₁

where π is the value of pi (approximately 3.14159).

Substituting the values, we have:

theta₁ = (1/2) * arc sin((3000 * 9.8) / (2 * 400^2))

theta₂ = π - theta₁

Calculating the values, we find:

theta₁ ≈ 0.144 radians (or approximately 8.26 degrees)

theta₂ ≈ 3.141 - 0.144 ≈ 2.997 radians (or approximately 171.74 degrees)

Therefore, the two angles of elevation that can be used to hit the target 3000 m away are approximately 0.144 radians (or 8.26 degrees) and 2.997 radians (or 171.74 degrees).

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Answer:

Force will increase 3 times

Explanation:

We know force is directly porpotional to acclereation, with the constant, m mass.

\(f = ma\)

So if we mass is increased 3 times the force will increase 3 times.

Answer:

3.038 m/s^2

Explanation:

What we have

m = 6.0 kg

\(\mu_{k}\) = 0.20

\(\mu_{s}\) = 0.40

\(F_{applied}\) = 30 N

Since the situation is that the box has already been pushed, lets get the total net force of both components.

∑Fy = \(ma_{y}\) = 0 (bc the normal and weight cancel out each other)

∑Fx = \(F_{applied}\) - \(f_{k}\) = \(ma_{x}\) (We are going to use this equation to find acceleration)

To find the friction force

\(f_{k}\) = \(\mu_{k}\) * N

\(f_{k}\) = .20 * 6.0 kg * 9.81 m/s^2 = 11.772 N

Now we can use ∑Fx equation to actually find the acceleration of the box!

∑Fx = \(F_{applied}\) - \(f_{k}\) = \(ma_{x}\)

Plug it in

30 N - 11.772 N = 6 kg * a

Do the algebra...

a = \(\frac{30 N - 11.772 N}{6 kg}\) = 3.038 m/s^2

The statement that is most true concerning the current through each resistor and the voltage measured across each resistor is the current is the same through both resistors, and so is the voltage across both resistors.

The equivаlent resistаnce of а combinаtion of resistors depends on both their individuаl vаlues аnd how they аre connected. The simplest combinаtions of resistors аre series аnd pаrаllel connections. In а series circuit, the output current of the first resistor flows into the input of the second resistor; therefore, the current is the sаme in eаch resistor.

In а pаrаllel circuit, аll of the resistor leаds on one side of the resistors аre connected together аnd аll the leаds on the other side аre connected together. In the cаse of а pаrаllel configurаtion, eаch resistor hаs the sаme potentiаl drop аcross it, аnd the currents through eаch resistor mаy be different, depending on the resistor. The sum of the individuаl currents equаls the current thаt flows into the pаrаllel connections.

Your question is incomplete, but most probably your full question can be seen in the Attachment.

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Answer:

1. The reason why a plane mirror forms a virtual image is because it doesn't let the light go through it, but it reflects the light, so if you go behind the plane mirror, then you won't see the rays of light since it's not letting the rays of light go behind it.

2. The image cannot be projected onto a screen also.

3. Also, the Rays of light never meet at a focus point, so hence, this is why the plane mirror forms a virtual image.

Thanks!

Answer:

becaise the light does not actually pass through the image

Answer:

Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant.

In this state, Kinetic energy is equal to half of the product mass and velocity. SI unit is joules. So it's if the mass is doubled then the kinetic energy also gets doubled.

In order to apply the relationship o, a torsional member must be made of a ductile material, be homogeneous, and have a constant diameter.

A torsional member is subject to torsional or twisting forces. The relationship "o" represents the angle of twist or torsion in the member. To ensure this relationship holds, the following conditions must be met:

Ductile material: The torsional member should be made of a material that exhibits ductility. Ductility is the ability of a material to deform plastically without breaking. Ductile materials can withstand the twisting forces without fracturing, allowing for a reliable measurement of the angle of twist.

Homogeneity: The torsional member must be homogeneous, meaning it has uniform properties throughout its cross-section. If the member has varying material properties, such as different stiffness or strength, it can lead to uneven distribution of torsional forces and affect the accuracy of the relationship o.

Constant diameter: The torsional member should have a constant diameter along its length. This ensures that the distribution of torsional stresses remains uniform throughout the member. If the diameter varies, it can cause stress concentration points and lead to inaccurate measurements of the angle of twist.

In summary, a torsional member must be made of a ductile material to withstand the twisting forces, be homogeneous to maintain uniform properties and have a constant diameter to ensure accurate measurements of the angle of the twist.

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Answer:

The fountain is 3.43 m high.

Explanation:

Circumference of the pool = 15 m.

C = 2\(\pi\)r

where C is the circumference and r its radius.

r = \(\frac{C}{2\pi }\)

 = \(\frac{15}{2(\frac{22}{7}) }\)

r = 2.3864

radius of the pool = 2.40 m

So that the height of the fountain, h, can be determined by applying trigonometric function.

Tan θ = \(\frac{opposite}{adjacent}\)

Tan 55 = \(\frac{h}{2.4}\)

h = Tan 55 x 2.4

  = 1.4282 x 2.4

  = 3.4277

h = 3.43 m

The height of the fountain is 3.43 m.

Answer:

see below

Explanation:

Reultant force via Pythag Theorem

R = sqrt (3^2 + 4^2) = 5 N

F = ma

5 = 20 a

a = 5/20  m/s^2

Sensors inside IoT wearable devices typically collect information such as location and heart rate, temperature and humidity.

IoT wearable devices are designed to monitor various aspects of human health and the surrounding environment. They incorporate sensors that can collect data to provide valuable insights and enable personalized experiences.

Location and heart rate monitoring are common features in many wearable devices. Location tracking allows users to track their movements and enables applications like fitness tracking or navigation. Heart rate monitoring provides real-time information about the user's heart rate, which is crucial for fitness monitoring, stress management, and detecting abnormal heart rhythms.

Temperature and humidity sensors are also commonly integrated into wearable devices. These sensors measure the ambient temperature and humidity levels, providing information about the surrounding environment. This data can be used for various purposes such as monitoring comfort levels, assessing heat stress, or tracking environmental conditions for specific applications like agriculture or sports.

Collecting pH and air pressure data is less common in consumer wearable devices but may be used in specialized applications. pH sensors can be used for monitoring sweat or other bodily fluids to gain insights into hydration levels or assess certain health conditions. Air pressure sensors can provide information about altitude changes, weather patterns, or even be used for indoor air quality monitoring.

Overall, the sensors integrated into IoT wearable devices are selected based on the specific purpose and application of the device, aiming to provide meaningful data for the intended use case.

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Answer:

5.65 m/s²

Explanation:

We'll begin by calculating the mass of PJ when in San Diego (i.e Earth). This can be obtained as follow:

Weight of PJ on Earth (Wₑ) = 545 N

Acceleration due to gravity (g) on Earth (gₑ) = 10 m/s²

Mass of PJ on Earth (mₑ) =.?

Wₑ = mₑ × gₑ

545 = mₑ × 10

Divide both side by 10

mₑ = 545 / 10

mₑ = 54.5 Kg

Thus, the mass of PJ on San Diego (i.e Earth) is 54.5 Kg

Finally, we shall determine the acceleration due to gravity of planet Koja. This can be obtained as follow:

Weight of PJ on Koja (Wₖ) = 308 N

Mass of PJ on Koja (mₖ) = mass of PJ on Earth (mₑ) because mass is constant irrespective of location.

Mass of PJ on Earth (mₑ) = 54.5 Kg

Mass of PJ on Koja (mₖ) = 54.5 Kg

Acceleration due to gravity of on Koja (gₖ) =?

Wₖ = mₖ × gₖ

308 = 54.5 × gₖ

Divide both side by 54.5

gₖ = 308 / 54.5

gₖ = 5.65 m/s²

Thus, the acceleration due to gravity on planet Koja is 5.65 m/s²

The rotational kinetic energy of a flywheel increases by 80% when its rotational speed increases by 40%. This is because the rotational kinetic energy of a flywheel is directly proportional to the square of its angular velocity.

The rotational speed of a flywheel increases by 40%. The percentage increase in its rotational kinetic energy is approximately 96.8%. Suppose the initial rotational speed of the flywheel is n1 and the initial rotational kinetic energy is K.E.1. After the speed of the flywheel is increased by 40 percent, the new speed is n2 = n1 + 0.4n1 = 1.4n1.

Then the new kinetic energy K.E.2 of the flywheel is given by K.E.2 = (1/2)I(n2^2)where I is the moment of inertia of the flywheel.Since n2 = 1.4n1, we have \(K.E.2 = (1/2)I(1.96n1^2) = 0.98I(n1^2).\).

Therefore, the percentage increase in the rotational kinetic energy of the flywheel is approximately 96.8%.

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Answer:

here

Explanation:

Law of inertia states that a body remains in a position of rest or motion along a straight line unless an external force is applied..

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26.676 × 10³ kg is the weight of the aluminum rod.

Given:

Length of cylindrical rod (h) = 45 cm

Diameter of a cylindrical rod = 4.53 cm

Radius of a cylindrical rod (r) = 2.3 cm

The density = 3.7*10^3kg/m^3

Volume of a cylindrical rod = πr²h

                                             = 3.14× (2.3)² × 45

                                             = 747.89 cm

                                             = 7.4789 m

To find weight ;

                         ρ = \(\frac{Mass}{Volume}\)                  ; ρ = Density

                        Mass = ρ × Volume

                                  = 3.7 × 7.48 × 10³

                                  =27.676 × 10³ kg

Therefore, the weight of the aluminum rod is 27.676 × 10³ kg.

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The correct option is (c) 0.5 .

The magnetic field experienced by the patient's protons is 0.5 Tesla.

What is a magnetic field in simple terms?

The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field. A diagram that shows the magnetic field and how a magnetic force is distributed inside and outside of a magnetic substance.

While opposite poles (north and south) are drawn to one another, the same poles repel one another. The north-seeking poles of the iron's atoms line up in the same direction when it is rubbed against a magnet. A magnetic field is produced by the force that the aligned atoms produce.

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The complete question is:

"If the precessional frequency of the protons net magnetization is approximately 21 MHz, a ____ Tesla magnetic field is being experienced by the patient's protons?

(a) 2.0

(b) 1.5

(c) 0.5

(d) 0.3"

ANSWER:

The current always choose low resistor to flow in circuit

STEP-BY-STEP EXPLANATION:

Gven:

V = 10 V

R1 = 250 Ω

R2 = 800 Ω

Apply Ohm's law:

We calculate the current in each case:

That means current always choose low resistor to flow in circuit

Answer:

136 m.

Explanation:

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

Time (t) = 0.80 s

Speed of sound (v) = 340 m/s

Distance (x) =?

The distance of the player from the wall can be obtained as follow:

v = 2x / t

340 = 2x / 0.80

Cross multiply

2x = 340 × 0.80

2x = 272

Divide both side by 2

x = 272 / 2

x = 136 m

Thus, the distance of the player from the wall is 136 m

Answer:

Hey!

Compounds are substances that compose of many identical molecules and composed of atoms from more than one element held together by chemical bonds.

Explanation:

For Example: SALT ( Sodium + Chlorine ⇒ SODIUM CHLORIDE

I HOPE THIS HELPED!