the frequency of the fundamental of the guitar string is 320 hzhz . at what speed vvv do waves move along that string?

Answer:

18.6 Ω

Explanation:

Resistance = \(\frac{Voltage}{Current}\)

But first we have to find the current.

Current = \(\frac{Power}{Voltage}\)

Power = 0.37W

Voltage = 2.60V

∴ Current = \(\frac{0.37}{2.60}\)

= 0.14 ( 3 significant figures)

Now we can find the resistance.

Resistance = \(\frac{2.60}{0.14}\)

= 18.6 Ω ( 3 significant figures)

Answer:

F = 13252.46 [N]

Explanation:

To solve these types of problems we must make a free body diagram. Attached we cand find a diagram of this free body diagram with the forces acting on the truck, since the truck does not move it follows that it is in static equilibrium so the sum of the forces on the X and Y axes must be equal to zero.

In the free body diagram it is necessary to use a Force F, which prevents the truck from going downhill, the direction of this force must be opposite to the movement towards the downhill.

Thus performing a sum of forces on the X-axis equal to zero, we can find the Force F corresponding to the brakes of the truck.

Answer:

Velocity V = 13 m/s

Explanation:

Given:

m = 1.2 kg

p = 15.6 kg·m/s

__________

V - ?

Momentum:

p = m·V

Velocity:

V =p /m  = 15.6 / 1.2 ≈ 13 m/s

According to the Newtons third law of motion, the collision between the bumper car and the rider will affect both of them as both the systems have mass and are moving with certain velocities.

Collision is a case where one moving object or person violently collides with another.

The law of interaction or the Newton's third law of motion, says that if one body exerts a force on a second body, the second body exerts a force equal in magnitude and opposite in direction on the first body.

As we know momentum is P = m*v i.e. momentum (P) is directly proportional to the mass and velocity.

Heavier bodies have more mass, therefore have more momentum.

here, the bumper car is the heavy system and hence, it will exerts more impact on the rider.

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Thus, the total potential is then V_total = \(-1.2 * 10^9V\)

The potential at a point due to a charge is given by V = kQ/r, where k is Coulomb's constant (~\(9x10^9 Nm^2/C^2\)), Q is the charge, and r is the distance from the charge.

The total potential at the center of the square is the sum of the potentials due to each charge.

The distance of each charge to the center is half the diagonal of the square, which is \(\sqrt2 * side/2 = \sqrt2 * \sqrt4.5/2 = 1.5m.\)

The total potential is then V_total

= \(k * [(510^8/1.5) + (210^8/1.5) - (510^8/1.5) - (710^8/1.5)] = -2 * k * 10^8 / 1.5 \\= -1.2 x 10^9 V.\)

Thus, the total potential is then V_total = \(-1.2 * 10^9V\)

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Answer:

A) 3 N [south]

B) 0 N

C) 5 N [south]

D) 4 N [east]

Explanation:

A) 5 - 2 = 3

B) equal forces

C) 0 + 5 = 5

D) 7 - 3 = 4

Answer:

Average speed = 0, Average velocity = 0.02 m/s

Explanation:

Given that,

A car travels from A to B and from B back to A.

The distance between A and B is 12 km

It took 20 minutes to travel full.

We need to find the average speed and the average velocity of the car.

As the car reaches the point from where it was started, the displacement of the car is equal to 0. As a result, the average velocity is equal to 0.

For average speed,

\(s=\dfrac{12+12}{60\times 20}\\\\s=0.02\ m/s\)

Hence, this is the required solution.

The spectrum of radiation emitted by a dense, opaque object depends mostly on its temperature.

When you heat up a dense, opaque object, its atoms start to vibrate. When this happens, they emit photons, which make up the object's electromagnetic radiation. The hotter the object, the more photons it emits. This means that the spectrum of radiation emitted by an object changes depending on its temperature. If you heat up a dense, opaque object to a high enough temperature, it will emit visible light. This is how incandescent light bulbs work - they heat up a filament until it glows hot enough to emit visible light.

This means that if you want to determine the temperature of an object, you can look at its electromagnetic radiation to see what wavelengths it is emitting. This is known as thermal radiation, and it is one of the most important ways that heat is transferred from one object to another.

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To determine the new retained earnings as of July 31, 20rd, we can use the given information:

Retained earnings, July 1, 20rd: $259,725

Increases: Net income (Part B) = $10,325

Decreases: Dividends (Part C) = $12,000

The calculation for new retained earnings, July 31, 20rd would be:

Retained earnings, July 31, 20rd = Retained earnings, July 1, 20rd + Increases - Decreases

Retained earnings, July 31, 20rd = $259,725 + $10,325 - $12,000

Retained earnings, July 31, 20rd = $258,050

Therefore, the new retained earnings as of July 31, 20rd is $258,050.

The statement of cash flows for July would be as follows:

Statement of Cash Flows for July

Cash flows from operating activities:

Cash inflows:

Cash from customers $68,000

Cash outflows:

Payments for rent $(5,600)

Payments for supplies $(62,600)

Payments to creditors $(12,800)

Payments for utilities $(4,750)

Net cash flows from operating activities $(17,750)

Cash flows from investing activities:

Cash outflows:

Purchase of land $(150,000)

Net cash flows from investing activities $(150,000)

Net increase (decrease) in cash $(179,750)

Plus: Cash balance, July 1, 20rd $294,000

Cash balance, July 31, 20rd $114,250

Please note that the information provided assumes a cut-off date of July 31, 20rd.

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Answer:

Climate scientists compare the tree growth records to local weather records. For locations where a good statistical match exists between tree growth and temperature or precipitation during the period of overlap, the ring widths can be used to estimate past temperature or precipitation over the lifetime of the tree.

When light passes through one transparent medium to another transperent medium it bends and that beding of light is know as refraction of light !

Doppler's effect:

The Doppler effect states that the frequency of sound increases as it source approaches you and it decreases as the source turns away from you.

When the ambulance drives past you, the pitch of the siren is lower. This is due to the fact that the frequency of the wavelength decreases.

A higher pitch means frequency increases and a lower pitch means frequency decreases.

Therefore, the correct answer is option B. decreases

If the universe were completely empty except for one object-a solid sphere moving through space at a speed of 100 km/s, it would take forever to be able to stop the object.

We know that according to the law of inertia, a body will continue in it state of rest unless it is acted upon by an external force. On the basis of this law, we know that if the universe is empty, there would be nor force that would be able to stop any object that is moving on the earth.

Thus, if the universe were completely empty except for one object-a solid sphere moving through space at a speed of 100 km/s, it would take forever to be able to stop the object.

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Answer:

Explanation:

.

\(3.82\)° is the minimum angle that the cable can make from the horizontal without breaking

For the sign to be in equilibrium, the net force on the sign in vertical direction must be zero. The forces acting on the sign in the vertical direction are the vertical components of the tension forces in cable from each building acting in the upward direction and the weight of the sign acting in downward direction. The vertical components of the tension forces must be equal. Thus, the force equation in the vertical direction can be written as,

\(2T sin \theta-W=0\)

Here, T is the maximum tension the cable can withstand, \(\theta\) is the angle the cable makes with the horizontal and W is the weight.

Rearranging the equation,

\([sin \theta=W/2T],[\theta=sin^-1W/2T],[=sin^-1200N/2(1500N],[=3.82\)]

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The statement "Laser light is commonly used to measure distances"  is true because laser light is coherent, meaning that it is all of the same wavelength and phase. This makes it possible to measure the distance to an object by measuring the time it takes for the laser light to travel to the object and back.

There are a number of different ways to measure distances using laser light. One common method is called time-of-flight ranging. In this method, the laser light is emitted from a device and then reflected off of the object. The time it takes for the laser light to travel to the object and back is then measured. The distance to the object can then be calculated using the following formula: Distance = Speed of Light * Time

Laser light is also used in a number of other applications that require accurate measurements of distance, such as surveying, construction, and astronomy.

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The Divergence Theorem is true for the vector field F(x,y,z)=3xi+xyj+3xzk on the region E, which is the cube bounded by the planes x=0,x=3,y=0,y=3,z=0,z=3.

Explanation: The Divergence Theorem states that the flux of a vector field across a closed surface is equal to the volume integral of the divergence of the vector field over the enclosed volume. In this case, the cube is a closed surface, and the vector field F has a constant divergence of 6. Therefore, by the Divergence Theorem, the flux of F across the cube is equal to 6 times the volume of the cube. The volume of the cube is (3^3)=27, so the flux of F across the cube is 6 times 27, which is equal to 162.

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Answer:

the answer is C

Explanation:

this is because pressure is defined as the force acting per unit area thus,

the lower the area the higher the pressure

this can be explained by This,

will you experience pain if touch the tip of the needle or your pen

the area in the needle is less thus, more pressure

hope this helps,

The normal force N is the force exerted by the turntable perpendicular to the surface of the coin, and it remains constant as the speed of the turntable is increased.

The maximum force of static friction fs, max is determined by the normal force N and the coefficient of static friction between the turntable and the coin, and thus also remains constant.

When the turntable speed is increased, the frictional force f increases because the force required to keep the coin moving in a circular path increases with the speed of the turntable.

However, as long as the force of friction f does not exceed the maximum force of static friction fs, max, the coin will not slide and will continue to rotate with the turntable. Therefore, both N and fs, max remain constant, while f increases as the speed of the turntable increases.

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The free body diagram shows the forces that act on the object.

We know that force is a vector quantity as such the direction of the force can also be seen to be very important and this is what have given rise to the idea of the free body diagram because it would show all the forces that have acted on the objects.

In effect, what we have been asked to do here is to draw the free body diagram of the system that is under study here. In this diagram all of the forces that is acting on each of the objects must be balanced.

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The input resistance r(in) of the circuit is 54.53 kΩ

In the given circuit, the value of Rₐ = 9 kΩ and β = 70. Let's calculate the input resistance r(in) of the circuit.

The resistance of the circuit is given by;

Rc = Vcc / Icq = 15 / 2.4 = 6.25 kΩ

The transistor current gain is given by β = Ic / Ib,

Ic = βIb

Thus,

Ib = Ic / β

Ib = 2.4 / 70 = 0.034mA = 34µA

The resistance, Rb is given by

Rb = (Vcc - Vbe) / Ib, where Vbe is the base-emitter voltage of the transistor

Let us assume Vbe = 0.7 V, then

Rb = (15 - 0.7) / 0.034 mA

Rb = 418.82 kΩ

The input resistance of the circuit is given by r(in)

= β * (Rc + Ra) || Rb

r(in) = 70 * (6.25kΩ + 9kΩ) || 418.82kΩ

r(in) = 6486.27 / 119

r(in) = 54.53 kΩ

The input resistance r(in) of the circuit is 54.53 kΩ.

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According to Plumbing 101 principles governing blood flow through the vessels, the statement "Flow depends on pressure difference, but not the absolute pressure" is true.

In the context of Plumbing 101 principles, blood flow through the vessels can be understood by applying the laws of fluid dynamics. According to these principles, the statement that holds true is that flow depends on pressure difference, but not the absolute pressure.

Pressure difference refers to the variance in pressure between two points in a fluid system. In the case of blood flow, it refers to the pressure difference between the point of origin (such as the heart) and the destination point (such as organs or tissues). The pressure difference creates a driving force for blood to flow from higher pressure regions to lower pressure regions.

While the absolute pressure at the origin and destination points may affect the overall pressure difference, it does not directly impact the flow rate of blood. Flow is primarily determined by the pressure difference rather than the absolute pressure at the specific points. Other factors, such as the diameter of the vessel, viscosity of the blood, and the resistance offered by the vessel walls, also influence blood flow.

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The electric potential at the point indicated with the dot in Figure 1 is approximately 9.244 x 10⁶ volts.

Tο determine the electric pοtential at the pοint indicated with the dοt in Figure 1, we calculate the cοntributiοn frοm each charge and sum them up. Let's denοte the charges as q₁ and q₂, and the distances as r₁ and r₂.

Given:

Charge q₁ = -1.2 nC

Charge q₂ = 2.0 nC

Using the fοrmula fοr electric pοtential:

V = k * q / r

where k is the electrοstatic cοnstant (8.99 x 10⁹ Nm²/C²), q is the charge, r is the distance frοm the charge tο the pοint, and V is the electric pοtential.

Let's calculate the cοntributiοns frοm each charge and sum them up:

Cοntributiοn frοm q₁:

q₁ = -1.2 nC

r₁ = 3.0 cm = 0.03 m

V₁ = k * q₁ / r₁

= (8.99 x 10⁹ Nm²/C²) * (-1.2 x 10⁻⁹ C) / 0.03 m

≈ -3.597 x 10⁶ V

Cοntributiοn frοm q₂:

q₂ = 2.0 nC

r₂ = 14.0 cm = 0.14 m

V₂ = k * q₂ / r₂

= (8.99 x 10⁹ Nm²/C²) * (2.0 x 10⁻⁹ C) / 0.14 m

≈ 1.284 x 10⁷ V

Nοw, we can sum up the cοntributiοns frοm each charge:

V_tοtal = V₁ + V₂

= -3.597 x 10⁶ V + 1.284 x 10⁷ V

= 9.244 x 10⁶ V

Therefοre, the electric pοtential at the pοint indicated with the dοt in Figure 1 is apprοximately 9.244 x 10⁶ vοlts.

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Answer:

it decrease by 9 times

Explanation:

If the separation distance between any two objects is tripled (increased by a factor of 3), then the force of gravitational attraction is decreased by a factor of 9 (3 raised to the second power).

Answer:

1:A 2:B 3:B hope this helps and God Bless

A) The BEST example of how “access to food” shapes the health of a diet is food that is higher in fat and sugar is often inexpensive.

B) Pauline is hoping to lose weight so she is going to eliminate all fats from her diet and stick strictly to fruits and vegetables advice to give is without fats, she will not have enough energy.

C) Rohan does not think that he needs to worry much about diet because he is naturally rather thin and does not have any health problems. He tends to eat a lot of fast food, even though he knows it is not the healthiest choice. However, he figures that he is young, so he does not need to worry about it too much If he is not eating healthy, he is increasing the chance of serious health problems later.

Healthy foods are those that provide you with the nutrients you need to sustain your body's well-being and retain energy. Water, carbohydrates, fat, protein.

Given question have description about healthy food and eating habits,

the best possible answer are given according to understanding.

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Answer:

\({ \bf{momentum = mass \times velocity}} \\ \\ { \tt{35 = m \times 10}} \\ { \tt{mass = 3.5 \: kg}}\)

Answer:

Speed is the measure of how fast something moves

Explanation:

Answer:

Check explanation

Explanation:

Gold - Au (Aurum)

Mercury - Hg (Hydrargyrum)

Copper - Cu (Cuprum)

Iron - Fe (Ferrum)

Lead - Pb (Plumbum)

These elements in the periodic table are some of the elements represented by letters not in line with their names.

This is because, these elements were known in ancient times and therefore, they are represented by letters from their ancient names.

Answer: Musical theater is like acting in a musical.

Explanation: Other dance styles don't involve singing.