Which of the following has the lowest molar solubility in water at 25°C?
a. Ni(CN)2, Ksp = 3.0 × 10−23
b. ZnS, Ksp = 1.1 × 10−21
c. PbS, Ksp = 8.4 × 10−28
d. Co3(AsO4)2, Ksp = 7.6 × 10−29
e. CaF2, Ksp = 3.9 × 10−16
C

Answer:

Velocity.

Explanation:

It is given that, the officer reports that the suspect is traveling north at 100 miles per hour. It means the suspect covers a distance of 100 miles every hour and moving in North direction.

It shows the velocity of the suspect. This is because his speed and direction are given. Velocity is a vector quantity.

So, the officer has reported the suspect's velocity.

Answer:

32 m/s

Explanation:

The speed of a bus is 30 m/s due East wrt the passenger

He also sees a  passenger on the bus walking to the back at 2 m/s.

We need to find the passenger's velocity relative  to the bus. As the observer sees that the bus and the passenger are moving in opposite direction. Let v is the relative velocity. So,

v = 30 m/s + 2 m/s

v = 32 m/s

Hence, the passenger's velocity relative  to the bus is 32 m/s.

Answer:

is given below.

Explanation:

By observing from the equator, you can see all of the stars in the sky at different times of the year, as the earth's rotation and orbit allow you to see different parts of the sky throughout the year.

The equator is an imaginary line that circles the earth, dividing it into two hemispheres: the northern hemisphere and the southern hemisphere. It is the line of zero degrees latitude and is located approximately at 0.00°N latitude. It is about 40,075 kilometers long and is the only line of latitude that is equidistant from both the North Pole and the South Pole. The equator passes through 13 countries including Ecuador, Colombia, Brazil, Congo, and Kenya.

The equator has a unique climate, as it is located in the tropics and receives more direct sunlight than any other part of the earth. This results in a hot and humid climate, with temperatures averaging around 27°C. The equator also experiences frequent rain, with high rainfall levels, particularly in the Amazon Basin. The equator is home to a diverse range of plant and animal life, including tropical rainforests, which are some of the richest and most diverse ecosystems on the planet.

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\(\boxed{\boxed{\sf CH_4+2O_2}\longrightarrow \boxed{\sf CO_2+2H_2O}}\)

When parking uphill on a two-way street with no curb, your front wheels should be turned to the right, away from the street. Option B

When parking uphill on a two-way street with no curb, it is important to take extra precautions to ensure that the vehicle does not roll backward. In addition to turning the front wheels to the right and engaging the parking brake, it is also a good idea to leave the vehicle in first gear (if it has a manual transmission) or park (if it has an automatic transmission).

It is important to note that in some jurisdictions, there may be specific laws or regulations governing how to park on a street with no curb. It is important to follow any applicable laws or regulations to avoid getting a ticket or facing other legal consequences.

It is also worth noting that parking on a street with no curb can be more challenging than parking on a street with a curb, as there may be less visual cues to guide you. It is important to be extra cautious and to take your time when parking in these situations.

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Answer: black holes

Explanation:

Answer:

:)

Explanation:

The closed integral ∮b⃗ ⋅dl→ of the magnetic field along a closed path around the wire is zero. This is because the net magnetic flux through a closed path around the wire is zero, as the magnetic field lines always cross this path twice and have opposite directions.

Magnetic field strength is defined as the force acting on a unit charge moving perpendicular to the magnetic field. The strength of the magnetic field is dependent on the current flowing through the wire, the distance of the point from the wire, and the magnetic constant. The formula for the magnetic field strength can be given as B = μ₀I / 2πr where B = Magnetic Field Strength I = Current r = distance from the wireμ₀ = magnetic constant A magnetic field is a vector field that is generated by an electric current, magnetized materials, and a changing electric field. It is also called the magnetic flux density or magnetic induction and is denoted by the letter ‘B.’

When a wire has a current flowing through it, it creates a magnetic field around it. This magnetic field is in the form of concentric circles around the wire. The direction of the magnetic field can be determined using the right-hand rule. The right-hand rule states that if you point your right thumb in the direction of the current flow, then the direction of the magnetic field will be perpendicular to the direction of your fingers wrapped around the wire. This means that if the current is flowing upwards, then the magnetic field will be in a clockwise direction, and if the current is flowing downwards, then the magnetic field will be in an anticlockwise direction.

The strength of the magnetic field can be determined using the equation. B = μ₀I / 2πr where B is the magnetic field, I is the current, r is the distance from the wire, and μ₀ is the magnetic constant. The magnetic constant (μ₀) is a physical constant that relates the units of magnetic field to those of electric current. Its value is μ₀ = 4π × 10⁻⁷ N/A².The magnetic field lines are always closed. This means that if you draw a closed path around the wire, the magnetic field lines will cross this path twice and will have opposite directions. So, the net magnetic flux through a closed path around the wire is zero.

Therefore, the closed integral ∮b⃗ ⋅dl→ of the magnetic field along a closed path around the wire is zero. This is because the net magnetic flux through a closed path around the wire is zero, as the magnetic field lines always cross this path twice and have opposite directions.

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The value of the closed integral \($\oint \mathbf{B} \cdot d\mathbf{l} = \mu_0 I = 4\pi \times 10^{-7} \times 5 = 2\pi \times 10^{-6} , \text{Tm/A}$\).

The value of the closed integral \($\oint \mathbf{b} \cdot d\mathbf{l}$\) of the magnetic field along a closed path around the wire, with a current of \(5 , \text{A}$, is $5\mu_0 I$\), where

According to Ampere's law, the line integral of the magnetic field \($\mathbf{B}$\) about a closed loop \($C$\) is equal to the product of the current enclosed by the loop \($I$\) and the permeability of free space \($\mu_0$\).

Mathematically, it can be written as: \(\oint \mathbf{B} \cdot d\mathbf{l} = \mu_0 I$, where $\mu_0 = 4\pi \times 10^{-7} , \text{Tm/A}$\).

The current enclosed by the loop, \(I$, is $5 , \text{A}$\). Therefore, \($\oint \mathbf{B} \cdot d\mathbf{l} = \mu_0 I = 4\pi \times 10^{-7} \times 5 = 2\pi \times 10^{-6} , \text{Tm/A}$\).

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1) Frequency

2) I dont know this one sorry

A hiker walks 4.5 km at an angle of 45 degree north of west, then the hikers walks 4.5 km south, 3.45 km is the magnitude of the hikers total displacement.

The hiker's total displacement can be found by combining the two displacement vectors. The first displacement vector has a magnitude of 4.5 km and is directed at an angle of 45 degrees north of west. This can be resolved into its horizontal and vertical components as follows:
Horizontal component = 4.5 km x cos(45°) = 3.18 km west
Vertical component = 4.5 km x sin(45°) = 3.18 km north
The second displacement vector has a magnitude of 4.5 km and is directed due south. This can be represented by a single vertical component of -4.5 km.
To find the total displacement, we simply add the horizontal and vertical components of both vectors:
Horizontal displacement = 3.18 km (west) + 0 km (east) = 3.18 km (west)
Vertical displacement = 3.18 km (north) - 4.5 km (south) = -1.32 km (south)
The magnitude of the total displacement can be found using the Pythagorean theorem:
Magnitude = sqrt((3.18 km)^2 + (-1.32 km)^2) = 3.45 km
Therefore, the magnitude of the hiker's total displacement is 3.45 km.

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The velocity is defined as the rate of change of displacement per unit time and the unit of velocity is m/s. Velocity is of two types and they are average velocity and instantaneous velocity.

A) From the given graph, object B traveled faster when compared with object A. Because the speed of object B increases gradually with time whereas the speed of object A decreases with time. Hence, object B travels faster.

B)The velocity increases with time 2s to 4s. The velocity is defined as the rate of change displacement by time taken. v = Δx/Δt, where Δx is the change in displacement and Δt is the time taken. Δx = final.dis - initial dis = 0-(-4) = 0+4 = 4 m. Δt = final.time-ini.time = 4-2 = 2s. Thus, the velocity v = 4/2 = 2 m/s. Hence, the velocity increases gradually.

C) The acceleration is defined as the rate of change of velocity per unit time. From the given graph, the change in velocity does not change, and hence Δv = 0. Acceleration a = Δv/Δt = 0. Thus, the acceleration of the object is zero.

D) Acceleration (a) is the rate of velocity per unit time and the unit of velocity is m/s². Acceleration (a) = Δv/Δt, where Δv is the change in velocity. Δv = final.velocity - initial.velocity = 8-(-2) = 8+2 = 10 m/s. Δt = final. time-initial. time = 7-3 = 4s. a = 10/4=2.5m/s². Hence, the acceleration is 2.5m/s².

E) Force is the product of mass and acceleration. From the given, the force moves in both forward and backward directions, and hence, force is a vector quantity. F(net) = F₁+F₂=18 - 6 = 12N. The mass of the cart is 2kg.

F = ma

a = F/m

  = 12/2

  = 6 m/s²

Thus, the acceleration of the cart with a mass of 2kg is 6 m.s⁻².

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Answer:

Below

Explanation:

that is the procedure above

The combined abundance of elements heavier than hydrogen and helium in the Sun and the majority of its neighbours is between 1 and 4 percent of the star's mass.

When a star's core runs out of hydrogen, it starts to fuse helium to create ever heavier elements, such carbon and iron. Most open-cluster stars have 1-4% of their mass in the form of heavy elements, according to spectra.

In the centres of most stars, lighter elements like hydrogen and helium are fused to form the most prevalent elements, such as carbon and nitrogen. Yet, the heaviest elements, like iron, can only be created in the vast stars which end their lives in supernova explosions.

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Answer:

You first push in then when the syringe is full push the out

Explanation:

1. in

2. out

but u should watch a You-tube video just in case

I hoped this helped!

When the mass is traveling toward x=+A at the equilibrium position (x=0), the maximum velocity occurs.

Velocity is defined as a vector expression representing the change in position over time of an object or particle. ​Acceleration is the rate at which the speed and direction of a moving object vary over time.

In simple harmonic motion, the acceleration is zero at the object's maximum speed. Maximum mass displacement in SHM equates to maximum acceleration. The momentum calculator uses the equation p=mv, or momentum (p) equals mass (m) times velocity (v).

Thus, when the mass is traveling toward x=+A at the equilibrium position (x=0), the maximum velocity occurs.

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​

All of these representing velocity as a a vector.

wht is vector?

A vector in physics is a quantity that has both magnitude (size) and direction. Examples of common vectors in physics include force, velocity, and acceleration. Vectors are often represented graphically by arrows with the magnitude indicated by the length of the arrow and the direction indicated by the direction of the arrow.

Vectors can be added together to give the resultant vector, which has a magnitude and direction determined by the sum of the vectors being added. Vectors can also be multiplied by scalars to give a new vector with a greater or lesser magnitude but the same direction.

Therefore, All of these representing velocity as a a vector.

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Answer:

\(40\:\mathrm{m}\)

Explanation:

We can use kinematics equation \(\Delta y={v_i}^2+\frac{1}{2}at^2\) to solve this problem. Because the metal ball's initial velocity was 0, \({v_i}^2=0\).

Therefore, our equation becomes:

\(\Delta y=\frac{1}{2}at^2\) (freefall equation).

\(t\) is given as 3 seconds and \(a\) is acceleration due to gravity (\(9.81\:\mathrm{m/s}\)).

Therefore, our answer is:

\(\Delta y = \frac{1}{2}\cdot9.81\cdot3^2=44.145=\fbox{$40\:\mathrm{m}$}\) (one significant figure).

Answer:

45

Explanation:

because

The magnitude of the force that the baseball exerts on the bat is 500 N.

The given parameters;

According to Newton's third law of motion, action and reaction are equal and opposite. That is, when an object A exerts a certain force on another object B, the reaction of object B is equal to the magnitude of the force exerted by object A but in opposite direction.

Let the force the baseball exerts on the bat = F₂

then, from Newton's third law, we will have the following;

F₁ = -F₂

500 = -F₂

-500 N = F₂ (500 N is magnitude while the negative sign is the direction)

Thus, the magnitude of the force that the baseball exerts on the bat is 500 N.

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Answer:

The electron gives up It's extra energy in a form called "photon light" and falls back down to its normal energy level

Explanation:

The block compresses the spring by 5.7 cm before coming to a stop.

To solve this problem, we need to use conservation of energy.

First, let's find the potential energy of the block at point A.

Since it is released from rest, its initial velocity is zero, so all of its energy is in the form of potential energy:

PE(A) = mgh = (5 lbs) * (32.2 ft/s²) * (1 ft) = 161 J

Next, let's find the kinetic energy of the block at point B.

Since it slides down a smooth surface, there is no friction to do work on the block, so its potential energy at point A is converted entirely into kinetic energy at point B:

KE(B) = PE(A) = 161 J

Now the block slides along a rough surface, so some of its kinetic energy will be converted into thermal energy due to friction.

Let's assume that the block comes to a stop at point C, where it compresses the spring.

At this point, all of the block's kinetic energy has been converted into potential energy in the spring:

PE(C) = KE(B) = 161 J

The potential energy stored in the spring is given by:

PE(spring) = (1/2)kx²

where k is the spring constant and x is the distance the spring is compressed. Since we know the potential energy stored in the spring and the spring constant, we can solve for x:

161 J = (1/2)kx²

x² = 322 J/k

x = √(322 J/k)

Now we just need to know the spring constant.

Let's assume the spring is ideal (i.e. it obeys Hooke's law) and has a spring constant of k = 100 N/m. Then:

x = √(322 J/100 N/m) = 5.7 cm

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When doing a kinetic research utilizing the method of starting rates, the reaction is repeated several times. While the concentration of one reactant fluctuates, the other is maintained constant.

You can determine what more solute has been dispersed in the solvent by looking at the level of the solution's concentration. For instance, the concentration may be stated as 1 teaspoon of salt per 2 cups of water if you add 1 teaspoon to 2 cups of water.

Molarity, a typical measurement used for this, is utilized. Molarity (M) is calculated by dividing the volume of the solution (V) in liters by the quantity of moles for solute (n). It's critical to remember that its molarity is determined by the moles of the solute in liter fluid.

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The complete question is-

When using the method of initial rates for a kinetic study, the reaction is performed ____. One reactant concentration is kept constant, and the other _____.

Answer:

Low pressure

Explanation:

Take two nearby points at the junction of both the tube, let point 1 be in the air tube while point 2 be in the paint tube.

According to Bernoulli's principle, the air at point 1 is moving with some speed which causes the pressure drop inside tube 1, while at point 2 there is no velocity, so there is no pressure drop at that point. In fact, the pressure at point 2 approximately equals the atmospheric pressure.

As both the points are taken is nearby at the junction, to the pressure drop in the flow air pipe causes the suction of fluid from the relatively high-pressure tube (paint tube).

Hence, this rush of air creates low pressure, which sucks the paint up the tube and into the stream of air.

Answer: D

Explanation: I saw it in a bill nye video.