Which statements describe a closed circuit? select three options. bulbs will shine. bulbs will not shine. the circuit is incomplete. the circuit is complete. charges flow. charges do not flow.

Answer:

To prevent heat-related illness in the players the coach could provide cooling off-breaks that allow players to cool off, have cool water, and fan themselves.

The coach can schedule training schedules at more pleasant temperatures such as in the morning (before 10am), late afternoon (after 5pm) or at night. In addition, he should make sure athletes keep their hydration up, always drinking water. Lastly, the coach should indicate that players wear light clothing with fabric that releases sweat. Also, all players should wear sunscreen as well.

Answer:

Practice should be canceled or moved indoors to an air-conditioned space.

Explanation:

Edmentum sample answer

The weight of the board influences the amount of effort required to move it because if it were too heavy, it would just sink, and if it were too light, it would simply float away.

The gravitational pull of a second, significantly bigger object, like the Earth or Moon, on a first object is known as weight. According to the universal law of gravity, any two objects will gravitate toward one another due to their masses with a force that is inversely proportional to the square of the distance between them and precisely proportional to the product of their masses. The source of weight is this law. Because of this, larger objects naturally weigh more when placed in the same location. However, the further an object is from the Earth, the less weight it has. An object's weight at the South Pole is somewhat higher than its weight at the North Pole because the Earth's polar radius is slightly less than its equatorial radius.

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We can use the formula:

Energy (E) = Charge (Q) × Potential difference (V)

          V = E / Q = 20 J / 80 × 10^-3 C = 250 V

         I = Q / t = 80 × 10^-3 C / 5.0 × 10^-3 s = 16 A

          P = E / t = 20 J / 5.0 × 10^-3 s = 4,000 W

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These graphs do not consistent with one another because one is graph of potential energy U(x)  vs distance(x)  and two is graph of force (F(x)) vs distance(x).

Potential energy in physics is the energy that an item retains as a result of its position in relation to other objects, internal tensions, electric charge, or other elements.

Now, if a force F(x) is applied on an object, that caused a displacement of the object a distance x. Then potential energy of the object is:

U(x) = ∫ F(x)dx.

Hence, U(x) ≠ F(x)

That's why, these graphs  do not consistent with one another.

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Standard Error Measurement (SEM) refers to the standard deviation of the error of measurement in a scale's units. It is employed to compute confidence intervals (CI) for specific scores or differences between two scores.

Here is how to calculate the Standard Error Measurement (SEM) for a person's shoulder range of motion who underwent a replacement surgery, assuming the SD for this population is 7 degrees and intra-rater reliability is r =.93.

We know that the formula for calculating SEM is SD1-r.

Here,

SD = 7 degree

sr = 0.93SEM

= SD√1-r

= 7√1-0.93

= 7√0.07

= 2.26 (rounded to two decimal places).

Now that we've determined the SEM, we can proceed to calculate a 90% and 95% CI using the SEM, assuming the observed score is 50 degrees of shoulder flexion.

Here's how to go about it:

For a 90% CI, we'll use a z-score of 1.64 as the critical value.90% CI = 50 ± (1.64 × 2.26)

= 50 ± 3.70

= (46.30, 53.70)

For a 95% CI, we'll use a z-score of 1.96 as the critical value.95% CI

= 50 ± (1.96 × 2.26)

= 50 ± 4.42

= (45.58, 54.42)

If you wanted to reassess the shoulder range of motion a second time, the 90% and 95% CI would be the same as the first time since the SEM is constant.

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Answer:

I think your bones, muscles, and joints your welcome :)

Explanation:

Answer: 8400 J

Explanation:

Q = mcT (Q is heat, m is mass, c is specific heat capacity, and T is change in temperature)

200 g = 0.2 kg

Difference in two temperatures written in Celsius is the same as the difference in the same two temperatures written in Kelvin. Kelvin just has a different value for starting at absolute zero.

Q = 0.2*2090*(-20-0) = -8360 J

This means that 8360 J of energy must be removed. Writing the answer to two significant figures makes the answer 8400 J.

When blue light of wavelength 470 nm falls on a single slit, the first dark bands on either side of center are separated by 53.0 ∘ The width of the slit is 1.63 µm.

The first dark bands on either side of the center of a single-slit diffraction pattern are known as the first-order minima. The angle between the central maximum and the first-order minimum is given by:

sinθ = λ / (a)

where λ is the wavelength of light, a is the width of the slit, and θ is the angle between the central maximum and the first-order minimum.

We can rearrange this equation to solve for a:

a = λ / sinθ

Substituting the given values:

λ = 470 nm = 4.7 × 10⁻⁷ m

θ = 53.0° = 0.925 radians

a = (4.7 × 10⁻⁷ m) / sin(0.925) = 1.63 µm

Therefore, the width of the slit is 1.63 µm.

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Answer:

The quadratic function models the path of the rocket. When we substitute an x value, we can determine the height in feet of the rocket.

To determine the height it was launched from, we would look at the y-intercept. This represents the starting value, as time = 0 in this point (cannot have negative time).

To determine how far the rocket traveled, we would look at the positive x-intercept of the expression. At this point, height = 0, so we can see the distance from start to finish of the rocket.

To determine the greatest height achieve, we would look at the vertex of the parabola generated from the given function. Using (-b/a, f(-b/a)), we can determine the greatest height achieved.

I believe Kalpana gave the correct explanation.

The reason is that density is a property of a material that remains the same regardless of the size of the sample. Density is defined as mass divided by volume (density = mass/volume), and it is a characteristic property of a particular type of rock.

Bigger stones will indeed be heavier, but their volume will also increase proportionally, maintaining the same density value. So, the density will be the same for any size of the stone, as long as the type of rock is the same.

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complete question not found in search engine.

Answer:

Friction is the main factor which reduces the efficiency of a simple machine. Efficiency of a simple machine can be increased by reducing the friction. But oiling and greasing the machine is a useful way to increase the efficiency of a machine.

Explanation:

Because all machines lose input work to friction, one way to improve the efficiency of a machine is by reducing friction. Oil is used to reduce friction between the moving parts of car engines. The use of oil makes engines more efficient. Another machine that loses input work is a bicycle.

The force of impact at 20 mph is two times that at 10 mph speeds.

An object can change its size or shape, begin moving, stop moving, accelerate, or decelerate as a result of a force acting on it. When two things contact, they exert pressures on one another that are identical in size but directed in the opposite direction.

The combined effect of all the forces acting on an object is known as the "resultant force," and it is the same as if only one force were to be operating on the object in that direction. To alter an object's velocity, the resulting force is necessary.

The force required for increasing speed 20 mph of an object of mass m at an interval of time t be = m×20/t.

The force required for increasing speed 10mph of an object of mass m at an interval of time t be = m×10/t.

Hence, the force of impact at 20 mph is two times that at 10 mph speeds.

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Answer:

307.07N

Explanation:

Given

Weight of object = 250N

angle of elevation  = 18.0°

coefficient of kinetic friction n = 0.26

acceleration = 9.81m/s^2

Required

Force parallel to the ramp

Using Newton second law

F = ma

Fm - Ff = ma

Fm - nR = ma

Fm = ma +nR

Fm = 25(9.81) + 0.26(Wcostheta)

Fm = 25(9.81) + 0.26(250cos18)

Fm = 245.25+61.81

Fm = 307.07N

Hence he magnitude of the force that the rope exerts on the crate parallel to the ramp is 307.07N

To make the net gravitational force on particle A from particles B, C, and D zero, particle D should be placed at the x coordinate of -11 cm and the y coordinate of 0 cm.

The net gravitational force on particle A from particles B, C, and D can be calculated using the formula for gravitational force:

F = G * (m₁ * m₂) / r²

Where F is the gravitational force, G is the gravitational constant, m₁ and m₂ are the masses of the two particles, and r is the distance between them.

Since the net gravitational force on particle A should be zero, we can set up an equation:

FAB + FAC + FAD = 0

Using the given information that the distance d is 22 cm and the masses of particles B, C, and D are known in terms of mA, we can calculate the x and y coordinates for particle D.

By applying the principle of superposition, we can calculate the net gravitational force on particle A from particles B, C, and D at the x coordinate and y coordinate of particle D. By adjusting the position of particle D, we can find the coordinates that result in a net gravitational force of zero on particle A.

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Despite the fact that we can use the equation to determine where it falls, we choose the equation and the equation (for soccer) instead. Because they provide information when and where and are considered more basic than equations.

A formula is a statement that two amounts or values ​​are equal, like this: B. 6 x 4 = 12 x 2. 2. Key nouns. When two or more components need to be considered together to understand or describe the overall situation, it is called an equation.

A mathematical statement, known as an equation, consists of two expressions joined by an equal sign. For example, the formula is 3x - 5 = 16. Solving this equation reveals that the value of the variable x is 7. 

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Answer:

we need to know what the choices are?

Explanation:

Answer:

A hot spot is a region deep within the Earth's mantle from which heat rises through the process of convection. This heat facilitates the melting of rock. The melted rock, known as magma, often pushes through cracks in the crust to form volcanoes.

Connecting a system of vessels with different diameters in parallel reduces the total effective resistance.

The resistance of a vessel depends on its diameter and length; as the diameter of the vessel increases, its resistance decreases. In parallel connections, blood flow is split between different vessels, with the largest vessels carrying the most blood flow and the smallest vessels less.

As a result, the overall resistance of the system decreases as the total cross-sectional area available for blood flow increases. This reduces the total effective resistance and reduces resistance to blood flow.

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The change in the internal energy of the system will increase.

The given parameters;

The change in the internal energy of the system is calculated by applying first law of thermodynamics as follows;

ΔU = Q + w

where;

ΔU = 150 J + 270 J

ΔU = 420 J

Thus, the change in the internal energy of the system increases.

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D. All of these choices are correct. A decision-making model includes recognizing the problem and identifying alternatives as possible solutions to the problem, identifying and estimating the relevant costs and benefits for each feasible alternative, and making the decision by selecting the alternative with the greatest overall net benefit.

Let's now define a Decision-making Model in detail:

The Decision-making Model is a framework that helps people make a sound decision by gathering information and assessing it rationally. It is a process for making intelligent and well-thought-out decisions. A well-established model for decision-making includes the following steps:

Step 1: Recognizing the problem and identifying alternatives as possible solutions to the problem.

Step 2: Identifying and estimating the relevant costs and benefits for each feasible alternative.

Step 3: Making the decision by selecting the alternative with the greatest overall net benefit. The model outlines a process that may be applied in a structured manner to solve any issue. It's essential to follow each of these steps to arrive at a well-informed and rational decision.

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Answer:

B my brother say that it was

Frozen preparations such as ice cream, sorbet, gelato, granite can be melted and refrozen, except gelato which cannot be melted and refrozen. This is because the ice cream, sorbet, and granite all contain a high content of fat which allows them to melt and refreeze successfully without becoming damaged.

However, the process of freezing the gelato forms tiny ice crystals, which provide its unique texture. If gelato is melted, it will lose its texture and will not re-freeze successfully.A gelato is a dense Italian ice cream that has a creamy texture and has a lower fat content than traditional ice cream. It is made by mixing milk, sugar, and flavorings, such as nuts or chocolate, and then churned to incorporate air into the mixture.

So, the ice cream, sorbet, and granite all contain a high content of fat which allows them to melt and refreeze successfully without becoming damaged.

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Answer:

There are antiviral medicines to treat some viral infections. Vaccines can help prevent you from getting many viral diseases.

Answer:

Water Waves

Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.

Explanation:

Water waves are defined as a combination of longitudinal and transverse waves.

One type of wave that exhibits both longitudinal and transverse motions is water waves. While a wave is travelling through the waver, particles are moving in clockwise circles. The radius of the circles gets smaller as the water depth gets deeper.

In fluid dynamics, the term "dispersion of water waves" refers to frequency dispersion or the fact that waves with different wavelengths move at different phase speeds.

Water waves in this sense are waves that move across the surface of the water, with gravity and surface tension acting as restoring forces.

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Answer:

  48 ft/s

Explanation:

Acceleration due to gravity decreased the upward velocity to zero in 1.5 seconds (half the total time), so the initial velocity must have been ...

  (32 ft/s^2)(1.5 s) = 48 ft/s

The equations mentioned by Emily in the valuation analysis for Aspeon are as follows:

1) Equation (1): This equation represents the value of equity (S) and calculates it based on the EBIT (earnings before interest and taxes), the tax shield provided by debt (D), and the required return on debt (kd) and equity (ks). It implies that the value of equity is equal to the adjusted EBIT after deducting the tax shield from debt.

2) Equation (2): This equation calculates the total enterprise value (V) by adding the value of equity (S) and debt (D). It represents the total worth of the company, considering both equity and debt.

3) Equation (3): This equation calculates the price per share (P) by dividing the total enterprise value (V) minus the initial debt (D0) by the number of shares (n0). It represents the price per share based on the valuation of the company.

4) Equation (4): This equation calculates the new number of shares (n1) by subtracting the dividend (D) from the initial number of shares (n0) divided by the price per share (P). It represents the adjusted number of shares after the payment of dividends.

5) Equation (5): This equation calculates the levered value (VL) by adding the unlevered value (VU) with the tax shield value (TD). It represents the value of the company after considering the tax advantages of debt.

These equations provide a framework for valuation analysis, considering factors such as earnings, taxes, debt, and equity. They help assess the value and financial implications of Aspeon's growth prospects.

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A projectile is launched at an angle of 33⁰ above the horizontal, then the projectile launched at an angle of 90 - 33 = 57⁰ will have the same range as the projectile launched at 33⁰. The correct option is (B) 57⁰.

In the absence of air resistance, a projectile launched at an angle of 33 above the horizontal will have the same range as a projectile launched at an angle of 57⁰.

The range of a projectile can be determined by using the range formula.

R = ((v^2 * sin(2θ))/g) Where

R is the range of the projectile,

v is the velocity of the projectile,

θ is the angle at which the projectile is launched, and

g is the acceleration due to gravity.

In the absence of air resistance,

the horizontal component of velocity of a projectile remains constant throughout the flight.

So, the range of a projectile depends only on its initial velocity and the angle at which it is launched.

If a projectile is launched at an angle θ,

the time of flight of the projectile can be calculated by using the following formula:

T = (2v * sin(θ))/g

The maximum height reached by the projectile is given by the formula:

H = (v^2 * sin^2(θ))/2gIf a projectile is launched at an angle θ, then the range of the projectile will be the same as the range of the projectile launched at an angle of (90 - θ).

So, if a projectile is launched at an angle of 33⁰ above the horizontal, then the projectile launched at an angle of 90 - 33 = 57⁰ will have the same range as the projectile launched at 33⁰.

Therefore, the correct option is (B) 57⁰.

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The speed of the wind is 17 mph and the speed of the plane in still air is 119 mph.

Let the speed of the plane be x and the speed of the wind be y. Then, the speed of the plane with the wind becomes x + y, while the speed of the plane against the wind is x - y.

The distance traveled with the wind in 3 hours is 408 miles.

Therefore, we can write the equation as:

3(x + y) = 408

Divide both sides by 3:

x + y = 136  .... (1)

The distance traveled against the wind in 4 hours is also 408 miles.

Therefore, the equation can be written as:

4(x - y) = 408

Divide both sides by 4:

x - y = 102  .... (2)

Now we can solve these two equations using the elimination method.

Add equations (1) and (2):

x + y + x - y = 136 + 1022x = 238x = 119 mph

Therefore, the speed of the plane in still air is 119 mph.

Now, substitute this value of x in equation (1):

119 + y = 136y = 17 mph

Therefore, the speed of the wind is 17 mph.

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The correct question is:

A plane flies 408 mi with the wind in 3 hr. The return trip takes 4 hr. What is the speed of the wind and the speed of the plane in still air?

Answer:

2000 N

Explanation:

F = ma = (1000 kg)(2 m/s²) = 2000 N

The net force exerted on the car is 2000 N.

To find the net force exerted on the car, we can use Newton's second law of motion, which states that the net force (Fnet) acting on an object is equal to the product of its mass (m) and its acceleration (a).

Newton's second law: Fnet = m * a

Given:

Mass of the car (m) = 1000 kg

Acceleration of the car (a) = 2m/s²

Now, let's calculate the net force:

Fnet = 1000 kg * 2 m/s^2

Fnet = 2000 kg⋅m/s² (or 2000 N, since 1 N = 1 kg⋅m/s²)

Hence, the net force exerted on the car is 2000 N.

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We can write the equation:    n - mg = fnetwhen the elevator is slowing down, the reading on the scale is 40 kg, which is the difference between the man's mass (m) and the force due to acceleration (fnet.

(a) free-body diagram for the man:

in an ascending elevator, the man experiences three forces: his weight (mg), the normal force (n) from the scale, and the net force (fnet due to the acceleration of the elevator.

      <--- mg (downward)            |

           v            o (man)

           |            ^ fnet(upward)

      <--- n (upward)(b) finding the man's mass:

when the elevator is speeding up, the reading on the scale is 60 kg, which is the sum of the man's mass (m) and the force due to acceleration (fnet. so, we can write another equation:

n - mg = -fnetcombining these two equations, we can eliminate n and fnet

n - mg = fnetn- mg = -fnetadding these equations:

2n - 2mg = 0

simplifying:

n = mg

this means that the normal force is equal to the weight of the man.

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