The paths of the light waves that interfere to cause first-order lines (2 points) Group of answer choices differ in length by the wavelength of the light are parallel lines are the same length differ in length by one-half of the wavelength of the light

Answer:

(a) h = 5.1 m

(b) v = 14.13 m/s

Explanation:

(a)

We will use the law of conservation of energy. For this situation it states that:

Loss in Potential Energy of Sphere = Gain in Kinetic Energy of the Sphere

mgh = (1/2)mv²

h = v²/2g   --------------- equation (1)

where,

h = height = ?

v = speed at lowest point = 10 m/s

g = 9.8 m/s²

Therefore,

h = (10 m/s)²/(2)(9.8 m/s²)

h = 5.1 m

(b)

using the equation (1)

h = v²/2g

v = √2gh

where,

v = velocity = ?

g = 9.8 m/s²

h = height = 2(5.1 m) = 10.2 m

Therefore,

v = √[2(9.8 m/s²)(10.2 m)]

v = 14.13 m/s

The height from which the sphere was released is 5.1 m

When the height is doubled, the speed of the sphere becomes 14.14 m/s.

The given parameters:

The height from which the sphere was released is calculated as follows;

\(P.E = K.E\\\\mgh = \frac{1}{2}mv^2\\\\gh = \frac{1}{2}v^2\\\\h = \frac{v^2}{2g}\\\\h = \frac{(10)^2}{2(9.8)} \\\\h = 5.1 \ m\)

When the height is doubled, the speed of the sphere becomes;

\(h = \frac{v^2}{2g} \\\\v^2 = 2gh\\\\v = \sqrt{2gh} \\\\v = \sqrt{2 \times 9.8 \times (2 \times 5.1)} \\\\v = 14.14 \ m/s\)

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The slopes that are formed by angular, ragged stones are more stable because they have the largest angle of repose.

1. In physics, the angle formed by the plane de contact between both bodies and the horizontal so when upper body is just about to slide: the angle whose tangent represents the frictional resistance of the two bodies.

One aspect of inter particulate friction, or the resistance to particle movement, is angle of repose. The USP describes it as the consistent, three-dimensional angle (relative to the horizontal base) acquired by a cone-shaped pile of material created using any of a number of different techniques.

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Answer:

e

Explanation:

An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force.

Answer:

If an object is at rest, it has no velocity - its velocity is zero. More precisely, since velocity is a vector, in this case the velocity would be the null vector.

Explanation: Hope this helps

The air pressure in the tires of a 980-kg car is 3.4×105 N/m2. It is important to maintain proper air pressure in car tires as it affects the handling, performance, and fuel efficiency of the vehicle.

The force that the Earth's atmosphere applies to the ground below is known as air pressure, commonly referred to as atmospheric pressure. The air molecules' gravitational attraction towards the Earth is what generates this pressure. The air pressure and density are increased due to the compression of the air molecules nearest to the Earth's surface. A barometer is often used to measure air pressure since it measures the force the atmosphere exerts on a unit of surface area. The pascal (Pa) is the accepted unit of measurement for air pressure, however millibars (mb) and inches of mercury (inHg) are also frequently used.

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The line currents in the three-phase circuit are Iab = 19.33 ∠ -21.8° A, Ibc = 19.33 ∠ -141.8° A, and Ica = 19.33 ∠ 98.2° A.

In a balanced three-phase circuit, the line currents can be determined using the following formula:

I = V / (sqrt(3) * Z)

Where I is the line current, V is the phase voltage, Z is the impedance of the load, and sqrt(3) is the square root of 3.

In the given figure, the three-phase circuit is supplied with three phase voltages of van = 460 ∠ 0° V, vbn = 460 ∠ –120° V, and vcn = 460 ∠ 120° V.

To find the line currents, we first need to convert the phase voltages to their respective line voltages. The line voltage between phases A and B is Vab = van - vbn, which is 460 ∠ 0° - 460 ∠ -120° = 460 ∠ 120° V. Similarly, the line voltage between phases B and C is Vbc = vbn - vcn, which is 460 ∠ -120° - 460 ∠ 120° = 460 ∠ -240° V. Finally, the line voltage between phases C and A is Vca = vcn - van, which is 460 ∠ 120° - 460 ∠ 0° = 460 ∠ -120° V.

Now, we can calculate the line currents using the formula mentioned above. Let's assume that the impedance of the load is Z = 10 + j5 ohms. Therefore, the line currents can be calculated as follows:

Iab = Vab / (sqrt(3) * Z) = 460 ∠ 120° V / (sqrt(3) * (10 + j5) ohms) = 19.33 ∠ -21.8° A

Ibc = Vbc / (sqrt(3) * Z) = 460 ∠ -240° V / (sqrt(3) * (10 + j5) ohms) = 19.33 ∠ -141.8° A

Ica = Vca / (sqrt(3) * Z) = 460 ∠ -120° V / (sqrt(3) * (10 + j5) ohms) = 19.33 ∠ 98.2° A

Therefore, the line currents in the three-phase circuit are Iab = 19.33 ∠ -21.8° A, Ibc = 19.33 ∠ -141.8° A, and Ica = 19.33 ∠ 98.2° A.

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It's indeed safer to push than to pull whenever feasible.If an item must be hauled, keep it close to your body and centered between the shoulders and hips.Bend between the waist and shoulders while attempting to maintain a straight back.Always avoid pulling or pushing things up high.

Keep in mind that the quadriceps (thighs), gluteus (buttocks), and abdominal muscles are your LIFTING MUSCLES.

Put your hands on anything and bend your elbows to push it.Apply steady, sustained pressure by moving your weight from the back leg to the front leg.Figure: Grab the item and bend your elbows to pull it.

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Photovoltaic panels are used to produce alternating current using sunlight. It uses solar cells which are photoactive and produce a photoelectric effect and thereby a potential is created.

When photons from the light energy is hit on a metallic surface the photon collides with the electrons of the metals and electrons are ejected from the metal surface. This phenomenon is called photoelectric effect.

In a solar photovoltaic panel, photovoltaic cells layers of semi-conducting materials, such as silicon, are sandwiched photovoltaic cells. When photons from sunshine strike each layer, its unique electronic properties energise and produce an electric field.

The current required to generate electricity is produced through what is known as the photoelectric effect. Electricity produced by solar panels is in the direct current form. This is then transformed into an alternating current by passing via an inverter.

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In part (b), the filling process is unable to meet the tolerance limits 99.7% of the time, and it does not achieve Six Sigma quality levels.

a. To calculate the process capability ratio (Cp) in part (a), we use the formula:

Cp = (Upper Specification Limit - Lower Specification Limit) / (6 * Standard Deviation)

Given:

Mean = 64 ounces

Standard Deviation = 8 ounces

Upper Specification Limit = 71 ounces

Lower Specification Limit = 57 ounces

Cp = (71 - 57) / (6 * 8) = 14 / 48 = 0.2917 (rounded to four decimal places)

To determine the standard deviation required for the process to meet the tolerance limits 99.7% of the time, we use the Z-score corresponding to a 99.7% confidence level, which is approximately 3.

Z = (Upper Specification Limit - Mean) / Standard Deviation

Rearranging the formula, we can solve for the standard deviation:

Standard Deviation = (Upper Specification Limit - Mean) / Z

Standard Deviation = (71 - 64) / 3 = 7 / 3 = 2.3333 (rounded to four decimal places)

b. In part (b), with the improved process having a standard deviation of 1.5 ounces, we can recalculate the process capability ratio using the same formula:

Cp = (Upper Specification Limit - Lower Specification Limit) / (6 * Standard Deviation)

Using the same specification limits as before:

Cp = (71 - 57) / (6 * 1.5) = 14 / 9 = 1.5556 (rounded to four decimal places)

To determine if the filling process is able to meet the tolerance limits 99.7% of the time, we compare the new Cp value to the critical value of 2. Since Cp is less than 2, the process does not provide Six Sigma quality levels.

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A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. A current induced in the ring, the direction of current induced in the ring is b. counterclockwise.

Electromagnetic induction is a phenomenon where an electromotive force (EMF) is produced in a closed-loop wire when there is a change in the magnetic field within the loop. Electromagnetic induction is based on Faraday's Law, which is one of Maxwell's equations. It's named after Michael Faraday, who discovered it. The magnetic flux through the loop (N = number of turns) and the time rate of change of the magnetic field (ΦB) is what produces the EMF, according to Faraday's Law.

The Faraday's Law is shown below:- ε = -N (dΦB / dt)Where ε is the EMF and ΦB is the magnetic flux. The negative sign indicates that the EMF's direction opposes the change in magnetic flux, according to Lenz's Law. A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. Is a current induced in the ring? Yes, a current is induced in the ring.What is the direction of current induced in the ring?The induced current in the ring is counterclockwise.

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Answer:

The extreme difference between the hot chimney and the cold knife makes the chimney expand and contract so quickly it cracks.

Explanation:

Hope this helped!

Answer:

When a blade of cold knife is touched to hot glass chimney there is a sudden drop of temperature on the spot where the blade touches. As a result it cracks.

Explanation:

When a blade of cold knife is touched to hot glass chimney there is a sudden drop of temperature on the spot where the blade touches. This decrease in temperature makes the glass to contract. The stress developed on the site of contraction is responsible for the cracking of the glass chimney.

Answer:

F=200 N

a=10m/s2

F=ma

m=F/a=200/10=20m

Explanation:

To produce 180 more tanks starting from point "b" (420 tanks and 800 bushels of corn), the society would need to increase its corn production by 540 bushels.

In order to produce more tanks, the society needs to allocate additional resources to tank production. Let's assume that each tank requires 3 bushels of corn as raw material. Since the society wants to produce 180 more tanks, it would need an additional 180 tanks * 3 bushels per tank = 540 bushels of corn.

To meet this increased demand for corn, the society must increase its corn production. Starting from point "b" with 800 bushels of corn, they would need to produce an additional 540 bushels of corn to reach the required total of 1,340 bushels (800 + 540).

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Answer: Volume=0.030/0.75

Explanation:

Density= mass/volume ∆density= mass/volume

(1.29- 0.54)= 0.030/volume

0.75 volume= 0.030 Volume=0.030/0.75

The Earth's orbital speed increases slightly as it gets closer to the Sun, reaching its fastest speed in December, and decreases slightly as it moves away from the Sun, reaching its slowest speed at aphelion in July.

The orbital speed of the Earth changes slightly as it moves around the Sun due to changes in its distance from the Sun. As the Earth gets closer to the Sun, it experiences a stronger gravitational pull, which increases its speed, and as it moves farther away from the Sun, the gravitational pull decreases, causing the speed to decrease.

In July, the Earth is at aphelion, which is the farthest point in its orbit from the Sun. At this point, the Earth is about 94.5 million miles away from the Sun. In December, the Earth is at perihelion, which is the closest point in its orbit to the Sun. At this point, the Earth is about 91.5 million miles away from the Sun. Therefore, the Earth is about 3 million miles closer to the Sun in December than it is in July.

As the Earth gets closer to the Sun, its orbital speed increases due to the stronger gravitational pull from the Sun. Therefore, in December, the Earth is moving faster in its orbit around the Sun than it is in July. This increase in speed is not noticeable to us on Earth, but it is a measurable change in the velocity of the Earth's orbit. In fact, the Earth's speed at perihelion is about 30 km/s (18.64 mi/s) compared to about 29.29 km/s (18.21 mi/s) at aphelion.

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A thermometer is the most accurate tool for calculating an object's thermal energy. A mercury-filled glass tube within a thermometer measures the temperature of an item by expanding or contracting the mercury inside.

There are three methods that thermal energy may be transferred: conduction, convection, and radiation. Conduction is the transmission of heat energy between adjacent molecules that are in touch with one another.

The speed at which thermal energy moves from one end of a substance to another determines thermal conductivity. Thermal energy transfers quickly between conductors and insulators but slowly between the two.

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Given that it has a 1.5 m wavelength The wave moves 0.75 m in one second as a result it takes the wave 8 seconds to move 6.0 meters in the x-direction.

Newton's First Law of Motion (Inertia) An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

The wavelength of the wave is given as 1.5 meters and it is traveling in the x-direction. The speed of a wave can be calculated using the formula:

Speed = Wavelength / Period

Since the wave is crossing the x-axis every second, its period is 1 second. So, the speed of the wave can be calculated as:

Speed = 1.5 meters / 1 second = 1.5 meters/second

To find out how long it takes the wave to travel 6 meters in the x-direction, we can use the formula:

Time = Distance / Speed

Time = 6 meters / 1.5 meters/second = 8 seconds

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Answer:

8.0

Explanation:

The cart is 1.8 m/s fast when traveling.

The speed of the cart can be calculated using the formula of momentum.

This can be defined as the product of mass and velocity.

Make v the subject of the equation.

From the question,

Substitute these values into equation 2

Hence, the speed of the cart is 1.8 m/s

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Answer:

A: The mass would be 250kg

Explanation:

In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object. where m is the mass and v is the velocity. The equation illustrates that momentum is directly proportional to an object's mass and directly proportional to the object's velocity.

p= mv

m= p/ v

The explanation to that is:

momentum = mass× velocity

mass= momentum / velocity

THE ANSWER IS A

Hope this helps!

Answer:

hope this helps

Explanation:

Of the three phases of matter (gas, liquid, and solid), sound waves travel the slowest through gases, faster through liquids, and fastest through solids

so your answer would be B.

Answer:

Explanation:

66.2mi/h to m/s

\(\frac{1609m}{1mi}\)×\(\frac{66.2mi}{1h}\)×\(\frac{1h}{60min}\)×\(\frac{1min}{60s}\)

\(\frac{1609*66.2}{60*60}\)= 29.58772222

Pls make sure of the way of solving to be sure...

Answer:

263.152kg

Explanation:

The density of a substance is related to its mass and volume as follows;

density = mass / volume      

mass = density x volume       -------------(i)

The substance in question here is mercury which has;

density = 13.56g/mL = 13.56g/cm³

Since the mercury is going to be put in the cylindrical glass, the volume of the cylindrical glass is going to be equal to the volume of the mercury that will be put.

And we know that the;

volume of a cylinder = πr²h

Where;

π = 3.142

r = bottom radius of the cylinder = 5.75inches

h = height of the cylinder = 0.950ft

For uniformity, let's convert the radius and height of the cylinder to their corresponding values in cm

r  = 5.75 inches = 5.75 x 2.54 cm = 14.605cm

h = 0.950 ft = 0.950 x 30.48 cm = 28.956cm

Therefore, the volume of the cylinder;

v = 3.142 x (14.605cm)² x 28.956cm = 19406.5cm³

v = 19406.5cm³ [This is also the volume of the mercury necessary to fit the cylinder]

Now the following value has been found;

volume = 19406.5cm³

Substitute the values of density and volume into equation (i)  as follows;

mass = 19406.5cm³ x 13.56g/cm³

mass = 263152.14g

Convert the result to kg by dividing by 1000

mass = 263.152kg

Therefore, 263.152kg kilograms of mercury would fit in the cylindrical glass.

Explanation:

It"s B i think i've might be wrong??

The relationship between the amplitude and energy of a mechanical wave is given by the equation E = (1/2)*ρ*A^2*v.

Energy is the ability to do work or cause change. It exists in many different forms, including kinetic energy (the energy of moving objects), potential energy (stored energy), thermal energy (the energy of heat), electrical energy (energy carried by electrons), chemical energy (the energy stored in the bonds of atoms and molecules), and nuclear energy (the energy released during nuclear reactions).

Using this equation, we can calculate the energy of mechanical wave A and mechanical wave B. If mechanical wave A has an amplitude of 1 cm, and mechanical wave B has an amplitude of 2 cm, then the energy carried by mechanical wave A is 1/2*ρ*1^2*v and the energy carried by mechanical wave B is 1/2*ρ*2^2*v. This means that the energy carried by mechanical wave B is 4 times the energy carried by mechanical wave A, since 2^2 is equal to 4. Therefore, the relationship between the energy carried by the two waves is that mechanical wave B carries four times more energy than mechanical wave A.

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Answer:

5

Explanation:

"Par 3" means that the player is expected to complete the hole with three throws. If you are two over par, that means it took you two extra throws to finish the hole.

The maximum allowable length for float glass jalousies is 150 cm.

What is Float Glass?

Float glass refers to a type of glass that is made by floating molten glass on a bed of molten metal. Float glass is a popular type of glass because it is both strong and durable.

Float glass is often used in windows, mirrors, and other applications where high-quality glass is required.

What is a Jalousie?

A jalousie is a type of window that consists of a series of parallel glass panes that are set in a frame. Jalousies are typically designed to allow air to flow through them, which makes them ideal for use in hot climates where ventilation is important.

What is the maximum allowable length for float glass jalousies?

The maximum allowable length for float glass jalousies is 150 cm. This means that any jalousies that are made from float glass cannot exceed this length. This limit is in place to ensure that the glass is strong enough to support itself and to prevent it from breaking under its own weight.

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A maciromwave and an X-ray are traveling in a vacuum compared to the wavelnegth and period of the microwave,  the X-ray has a wavelnegth that is shorter than that of a microwave

A microwave and an X-ray are both electromagnetic waves that travel through a vacuum, they differ in their wavelength and frequency. The wavelength of an X-ray is shorter than that of a microwave. The wavelength and period of a wave are inversely proportional. This means that as the wavelength decreases, the frequency and period increase. This is the case for X-rays, which have a high frequency and short period compared to microwaves.

In terms of energy, X-rays have more energy than microwaves due to their shorter wavelength. This allows X-rays to penetrate materials more easily and be used in medical imaging. In conclusion, the wavelength and period of a wave are inversely related. X-rays have a shorter wavelength and higher frequency compared to microwaves, allowing them to have more energy and penetrate materials more easily. So therefore the wavelength of an X-ray is shorter than that of a microwave.

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