Vector A points South. Vector B points West.
What is the direction of their cross product a X b
1. A ×B = 0, its direction is undefined
2. South
3. None of the other answers
4. A ×B a scalar and has no direction
5. Vertically Up
6. North
7. Vertically Down
8. Southwest
9. West
10. E

Answer:

Gold_____19.3g/cc

muscovite_____2.82

biotite_______3.09

pyrite______5g/cm^3

Answer:

electrons

Explanation:

i think this is right

The value of electric current in the middle of the depletion layer of reverse biased p-n junction is zero due to the zero magnetic field as the current is ∝ to the magnetic field.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, that is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is travelling through a magnetic field.

The magnetic field B and the charge q's velocity v are both perpendicular to the force. F = qvB sin, where is the angle of 180 degrees between the velocity and magnetic field, gives the force's magnitude.

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Answer:

In the given function b(t), the variable t represents the number of years after 2008. The   domain of this function is . The range more than 258.7 would not make sense. The graph of the function is always continuous

The given function b(t) shows the population of bobcats in northern Arizona since 2008. Therefore the variable t represents the number of years after 2008.

Since t represents the number of years after 2008, which is either positive or zero, therefore the domain of this function is .

The given function is a quadratic function and the coefficient of  is negative, so it is a downward parabola. The range above the y-coordinate of the vertex doesn't make any sense.

The vertex of parabola is defined by .

Vertex of the given function is (4.2,258.7).

Thus, the range more than 258.7 would not make sense for this function.

Since the given function is a polynomial function and polynomial functions are always continuous, therefore the graph of the function is always continuous

HOPE THIS HELPS <3

Para hacerlo a m/s un método muy práctico es sólo dividir entre 3.6, por cuestiones de conversiones, lo puedes comprobar.

212 km/hr /3.6 = 58 m/s

Comprobación :

V= d / t

V= 212 m / 18000 seg <---- nota que aquí los segundos son de las 3.1hrs  

V= 58 m/seg

Suppose a lion is in free fall.  The lion covers the same distance as the second before.

In free fall, an object falls with a constant acceleration of 9.8 meters per second squared (9.8 m/s^2) due to the force of gravity. This means that the lion's speed increases by 9.8 m/s every second it falls. However, since the lion starts from rest, its initial speed is 0 m/s. Therefore, after one second of free fall, the lion's speed is 9.8 m/s, after two seconds it's 19.6 m/s, and so on. Despite the increase in speed, the lion's displacement (i.e., the distance it covers) in each second of free fall is the same, as the acceleration due to gravity is constant. Hence, the lion covers the same distance as the second before.

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Explanation:The fundamental answer is that without regular supervision of, and definitions of, weights and measures, commerce and exchange would be impossible, and there would be no market whatsoever for anything.

Explanation:

#Shadow

0.268 because grams are 1000 times bigger than mg

1 milligram = 0.001 grams

268.0mg * 0.001g

\(=\fbox{0.268 grams}\)

Answer:

b

Explanation:

A camera is a tool that helps to capture the live image and record the live video.

The camera is made up of a compound lens. The compound lens is made up of a mixture of mirrors.

The correct option is B

The mirror forms the image as follows:-

There are two types of mirror:-

The camera has a converging lens. Hence they form the converging mirror.

Hence, the correct option is B that is converging and virtual

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The fraction of the ice that lies above the water is obtained as 0.11.

We know that the term density has to do with the ratio of the mass to the volume of an object. In this case we can see that the density has to be looked upon as a kind of property that we can use so as to obtain the identity of a given material.

In this case, we can see that what we have been given in each case is the specific gravity. However, the specific gravity is the ratio of the density of the object to the density of water.

Thus;

Density of ice = 0.917 g/cm^3

Density of sea water =  1.025 g/cm^3

Then we know that the fraction that is above the surface of the water can be obtained by the use of the formula;

Volume above = Density of liquid - Density of ice/ Density of liquid

Volume above =   1.025  - 0.917/ 1.025

= 0.11

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Answer:

W = 210 N

Explanation:

For an ideal machine:

\(Work\ In = Work\ Out\\(P)(L)=(W)(H)\)

where,

P = Effort = Spring Scale Reading = 70 N

L = Effort Arm = Length of inclined plane = 12 m

W = Actual Load (Weight) to be lifted = ?

H = Load Arm = Height = 4 m

Therefore,

\((70\ N)(12\ m) = (W)(4\ m)\\\\W = \frac{(70\ N)(12\ m)}{4\ m}\)

W = 210 N

The feature of the graph that represents the negative acceleration between Y and Z is the decreasing slope of the line. As time progresses, the velocity of the car decreases at a constant rate, indicating that the car is experiencing a negative acceleration.

The feature of the graph that represents the distance travelled between Y and Z is the area under the line. By calculating the area between Y and Z on the velocity-time graph, we can determine the distance travelled by the car during that time interval.

In summary, the negative acceleration is represented by the decreasing slope of the line between Y and Z, while the distance travelled is represented by the area under the line between Y and Z.

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Answer:

553.74≤x≤578.26

Explanation:

The formula for calculating the confidence interval is expressed as

CI = xbar±(z×s/√n)

xbar is the mean = 562

s is the standard deviation = 26.1

n is the sample size = 35

z is the z score at 90% CI = 1.645

Substitute the values into the formula

CI = xbar±(z×s/√n)

CI = 561±(1.645×26.1/√35)

CI = 561±(1.645×4.412)

CI = 561±7.257

CI = {561-7.257, 571+7.257}

CI = {553.74, 578.26}

Hence the 90% confidence interval estimate of the name of the population is 553.74≤x≤578.26

The angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

To determine the angles θ and θ' in the given scenario, we can use Snell's Law, which relates the angles of incidence and refraction to the refractive indices of the media involved. Snell's Law can be stated as follows:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Where:

n₁ is the refractive index of the medium of incidence (in this case, air with a refractive index close to 1),

θ₁ is the angle of incidence,

n₂ is the refractive index of the medium of refraction (in this case, linseed oil with a refractive index of 1.48), and

θ₂ is the angle of refraction.

Let's solve for the unknown angles θ and θ' using the given information.

Given:

Angle of incidence θ = 1°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of refraction θ₂.

Using Snell's Law, we have:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

sin(θ₁) = n₂ * sin(θ₂)

Plugging in the values:

sin(1°) = 1.48 * sin(θ₂)

We can now solve for θ₂:

θ₂ = arcsin(sin(1°) / 1.48)

Calculating this value, we find:

θ₂ ≈ 0.688°

Now, let's determine the angle θ'.

Given:

Angle of refraction θ₂ = 0.688°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of incidence θ'.

Using Snell's Law, we have:

n₂ * sin(θ₂) = n₁ * sin(θ')

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

n₂ * sin(θ₂) = sin(θ')

Plugging in the values:

1.48 * sin(0.688°) = sin(θ')

Solving for θ', we find:

θ' = arcsin(1.48 * sin(0.688°))

Calculating this value, we get:

θ' ≈ 1.988°

Therefore, the angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

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If a person gets into the rowboat, the water level at the edge of the pool will rise slightly. This is because the weight of the person adds to the weight of the boat and displaces more water, causing the water level to rise.

The amount of the rise in water level will depend on the weight of the person and the size of the boat. Similarly, if objects are added to the boat, the water level at the edge of the pool will also rise. However, if the boat is empty and just floating in the pool, it will displace a certain amount of water and the water level at the edge of the pool will be at the marked level.

Overall, the water level in the pool is determined by the amount of water displaced by the rowboat and any additional weight that is added to it.

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Answer:

a) 361.7 Hz

b) 318.1 Hz

c) 29.3 m/s

Explanation:

a) Speed of sound in 20 degrees celcius is 343 m/s.

Use v=wavelength*frequency to find wavelength.

343=wavelength*340

wavelegth=1.009 meters

Relative speed of waves to observer A = 343+22 = 365 m/s

Plug it back in.

365=1.009*F

F=361.7 Hz

b) Relative speed of waves to observer B = 343-22 = 321 m/s

Plug it back in.

321=1.009*F

F=318.1 Hz

c) STATIONARY CAR, so 369Hz=v/1.009. v=372.3, 372.3-343=29.3m/s!

Stars are important because it gives direction to the people.

We know that our universe is constantly changing.

The effect of dark energy have on the universe is that it accelerate the expansion of the universe.

The stars and galaxies will eventually exhaust their energy and the end will be in the 'Big Chill'.

The stars are so important because they have helped humans navigate. When it was dark these stars would light up the sky giving light to people. Stars are very important for human survival because they make possible life on Earth.

The perception of the universe has changed over the past century because 100 years ago the universe was viewed as unchanging but now we understand that our universe is changing constantly.

The dark energy does not have any gravitational effects, but it has a global effect on the universe which leads to a repulsive force that tends to speedup the expansion of the universe.

As the Universe continues to expand, all the stars and galaxies will eventually loses their energy and the Universe will eventually cool down results in the 'Big Chill'.

So we can conclude that stars beautifies the universe with its lightening effect.

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Answer:

Ionic bonding

Explanation:

Since Ca is a metal and O is a nonmetal, they will experience ionic bonding. This means that Ca will "donate" two of its valence electrons to O. This will give both Ca and O a complete octet.

Answer:

CaO

Explanation:

Depending on the element "a" stands for, there is not enough info to conclude how these elements would bond. however, if they are typed out correctly then one possible bond would be CaO. I am assuming that the C and O represent Carbon and Oxygen.

Sedimentary rock refers to any rock that has formed as a result of the lithification of sediment, including clastic, chemical, or organic remnants.

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Answer:

The reasons behind it include the environmental cost of manufacturing and how many miles per gallon a car gets.

a study reveals that fully 75 percent of a car's lifetime carbon emissions stem from the fuel it burns, not its production. A further 19 percent of that is production and transportation of the fuel, leaving just six percent for the car's manufacture.

A perfectly inelastic demand curve graphs as a line parallel to the vertical axis.

A perfectly inelastic demand curve is a type of demand curve where the quantity demanded remains constant regardless of changes in price. In other words, the demand is completely unresponsive to price changes. When graphed, a perfectly inelastic demand curve appears as a vertical line parallel to the vertical axis.

This means that no matter how much the price of a product or service changes, the quantity demanded by consumers remains the same. The price elasticity of demand coefficient for a perfectly inelastic demand curve is zero because there is no change in quantity demanded relative to price changes.

A perfectly inelastic demand curve is often seen in the case of essential goods or products with no close substitutes, where consumers are willing to pay any price to obtain the item. Examples may include life-saving medications or specific medical treatments.

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Answer:

If an object has a fast velocity, the dots on a ticker tape diagram will be far apart.

The image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

The quantities that contain the magnitude of the quantities along with the direction are known as the vector quantities.

Examples of vector quantities are displacement, velocity acceleration, force, etc.

Thus, the image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

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A SYN (synchronize) flood attack is a type of denial-of-service (DoS) attack on a computer server, which causes blockage of all the internet servers.

Which of the following conditions are results of a SYN (synchronize) flood attack?

The following are the results of SYN (synchronize) flood attack.

SYN (synchronize) floods are often known as “half-open” attacks because this type of floods attack which aims to send a short explode of SYN (synchronize) messages into the ports, which leaves insecure connections which are open and available, and often resulting in a complete server crash. We can prevent from SYN (synchronize) flood attacks by installing an IPS, configuring your firewall, installing and update networking equipment.

So we can conclude that: A SYN (synchronize) flood attack is a type of denial-of-service (DoS) attack on a computer server, which causes blockage of all the internet servers.

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A SYN (synchronize) flood attack is a type of denial-of-service (DoS) attack on a computer server, which causes blockage of all the internet servers.

Thus, SYN (synchronize) floods are frequently referred to as "half-open" assaults because they try to send a brief explosion of SYN (synchronize) messages into the ports, leaving unsecure connections that are open and available and frequently leading to a total server breakdown.

By putting in an IPS, setting up your firewall, and updating networking hardware, we can protect ourselves from SYN (synchronize) flood attacks.

A SYN (synchronize) flood assault is a kind of denial-of-service (DoS) attack on a computer server that results in the blocking of

Thus, A SYN (synchronize) flood attack is a type of denial-of-service (DoS) attack on a computer server, which causes blockage of all the internet servers.

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Which of the following conditions are results of a SYN (synchronize) flood attack?

A. The user installed adware.

B. The user installed rogueware malware.

C. The user installed Trojan horse malware.

D. The user installed crypto-malware.

The tension force in the rope cannot be exactly horizontal when swinging a ball in a circle. The tension force has a vertical component that provides the necessary net force for circular motion. The rope will have a downward angle from the horizontal direction to maintain the ball's circular path.

To show that the rope cannot be exactly horizontal, we consider the forces acting on the ball. Let's assume the rope's tension force, T, is at an angle below the horizontal. If the rope were horizontal, there would be no vertical component of the tension force. However, in this case, the vertical component of T must counteract the force of gravity acting downward.

Since the student is swinging the ball in a circle, there must be a net inward force acting toward the center of the circle to keep the ball in motion. This inward force is provided by the horizontal component of the tension force, which is directed inward. If the rope were exactly horizontal, there would be no horizontal component of the tension force, and the ball would move in a straight line tangential to the circle.

Therefore, to maintain circular motion and balance the forces acting on the ball, the rope's tension force must have both vertical and horizontal components, making it impossible for the rope to be exactly horizontal.

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EXPERIMENT 1 0 Centripetal Force 4. Figure 10. I shows a student swinging a ball in a circle about his head. Show that the rope cannot be exactly horizontal. (Hint: Take the rope's tension force T to be at an angle below the horizontal, and examine the components of T. Use a diagram to illustrate.)

Answer:

Option - d This is trick question, since the solar constant never change. The gravity of the Sun keeps the planets in their orbits at all times. They stay in their orbits, since there is no other force in the Solar System which can stop them. Yeah this might help. Add to brainliest please

Answer:

the the right because opposites attract to each other

Nitrogen-16 is a radioactive isotope of nitrogen, and its emission properties depend on the type of decay it undergoes. Nitrogen-16 can undergo beta-minus decay, where a neutron is converted into a proton, emitting an electron and an electron antineutrino. The emitted electron, also known as a beta particle, has a negative charge.

In air, the beta particles emitted by Nitrogen-16 can have a range of distances traveled depending on their initial energy. Higher-energy beta particles have longer ranges compared to lower-energy ones. In general, beta particles can travel a few centimeters to a few meters in air before losing most of their energy through ionization and excitation of air molecules.

When passing through iron, the beta particles emitted by Nitrogen-16 will experience interactions with the atomic nuclei and electrons of the iron material. These interactions lead to energy loss through ionization and scattering processes. As a result, the range of beta particles in iron is significantly shorter compared to air. The exact range depends on the initial energy of the beta particle and the density of the iron material. It can range from a few micrometers to a few millimeters.

It's important to note that the range of charged particles can vary based on the initial energy, the material they are passing through, and other factors. The ranges provided here are approximate values to give an idea of the general behavior of beta particles emitted by Nitrogen-16 in air and iron.

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