What is the Ksp expression for Ni3(PO4)2(s) in water?

options:

Ksp = [Ni2+]3[PO43-]2


Ksp = [Ni2+]2[PO43-]3


Ksp =(3x[Ni2+])(2x[PO43-])


Ksp =(3x[Ni2+])3(2x[PO43-])2

By definition we have that:

Melting: A change from solid to liquid

Sublimation: A change from solid to gas

Condensation: A change from gas to liquid.

Vaporization: A change from liquid to gas

The force that was needed to stop the bus of mass 5000 kg that stops after 25 m in 5 s is 5000 N.

a = v / t

v = d / t

a = Acceleration

v = Velocity

d = Distance

t = Time

d = 25 m

t = 5 s

v = 25 / 5

v = 5 m / s

a = 5 / 5

a = 1 m / s²

According to Newton's second law of motion,

F = m a

F = Force

m = Mass

m = 5000 kg

F = 5000 * 1

F = 5000 N

The given question is incomplete. The complete question is:

A bus of mass 5000 kg applies brake and stops after 5 seconds and the bus stops at distance of 25 meters, calculate the force that was needed to stop the bus in N

Therefore, the force that was needed to stop the bus is 5000 N

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The additional information needed to calculate the acceleration of the motorcycle is the time taken to complete the distance.

Acceleration is the amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).

The acceleration of a moving body can be calculated by dividing the change in velocity of the motion (∆V) by the time taken to complete the motion as follows:

Acceleration (m/s²) = change in velocity (m/s)/time(s)

According to this question, a motorcyclist is traveling in the positive direction at a velocity of 7.0 meters per second. She then increases her velocity to 9.0 meters per second. This means that the change in velocity {∆V} is 2m/s.

However, the time taken to complete the distance is still required to compute the acceleration of the motorcycle.

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Rusting is referred to as a example of oxidation reaction in this type of context.

This is a type of chemical change which involves the loss of electrons and contact with oxygen molecules. When this occurs, the element becomes oxidized  with the symbol O which is being used to denote it. The main factor which is considered about the oxidation process is the availability of oxygen.

Rusting on the other hand is referred to as iron oxide which occurs during the reaction between iron and oxygen and the color changes into reddish brown which signifies this process.

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Dependence:

-Area

-Separation

-Medium

Independent from:

-Charge

-Electric potential

-Metal

Answer:

50 N

Explanation:

The change in momentum in this case can be calculated in this way

Impulse (Ns) = force (N) X time (s)

We have Impulse and time here:

10Ns= force X 0.2s

We rearrange the formula to get force

10 ÷ 0.2 = 50

Therefore average force is 50N

Answer :First part is what you learned so write what you learned then the other parts is The evidence that the universe is expanding comes with something called the red shift of light. Light travels to Earth from other galaxies. As the light from that galaxy gets closer to Earth, the distance between Earth and the galaxy increases, which causes the wavelength of that light to get longer.

Explanation:

The acceleration of the cheetah is 4.07 m/s^2.

Acceleration is the rate of change of the velocity of an object with respect to time. The unit of acceleration is meter per seconds squared (m/s^2). The equation of acceleration is given below.

a = (v_f - v_i)/t

Where a = acceleration, v_f = final velocity, v_i = initial velocity and t = time.

Here, the final velocity = 26.5 m/s, initial velocity = 0 m/s (cheetah is at rest) and time = 6.5 s. The acceleration of the cheetah will be,

a = (26.5 - 0)/6.5

a = 4.07 m/s^2

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The small rocket will be take time 1296 sec.

We are given that,

The thrust of the rocket  = F = 35N

The velocity of the rocket = v = 0.63m/s

The mass of the satellite = m = 72000kg

Therefore , to get time t of the rocket when it would be fired and we use the equation such as , the product of the mass and velocity of an object i.e. known as momentum (p).

p = mv

Where p is the momentum of the rocket, m is the mass and v is the velocity of the rocket.

Since , here we can write Newtonian relations such as, Momentum is equivalence as a function of Force (F) and time (t) which is given as,

p = F t

So that from above two equation we can write as,

mv = Ft

t = mv/F

t = {(72000kg) ×(0.63m/s)}/35N

t = 1296 sec

Therefore, the rocket will be fired in 1296 seconds.

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Acceleration of the rabbit, moving in the positive x-direction at 1.50 m/s when it spots a predator and accelerates to a velocity of 12.1 m/s along the positive y-axis, all in 2.20 s is given by in x direction 0 m/sec² in y direction is 5.50 m/sec².

The rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.

Given in the question rabbit is initially moving with speed 1.50 m/sec in x direction after rabbit spot predator start accelerating in y direction to velocity 12.1 m/sec in 2.20 m. so acceleration in x direction will be zero.

Acceleration in y direction is 5.50 m/sec².

Acceleration in x direction will be zero.

Acceleration in y direction is 5.50 m/sec².

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Be [purple], Ca [black] and Sr [blue] are the elements in order of increasing size.

Brittle is not the property of metals.

The strong electrostatic force of attraction that is present in metal ions when they are surrounded by a large number of electrons. It is actually very strong and flexible at the same time. So, when we apply a force on the metals, they can be transformed into flat and smooth sheets that can be drawn into wires and they are hard to break into pieces.

Beryllium is an element that is present in the second period while on the other hand, calcium element is present in the next period and Sr element is also present in the lower period of periodic table. We know that when we move down the group, the number of shells increases which ultimately leads to increase in atomic size.

So we can conclude that the elements in order of increasing size are Be [purple], Ca [black] and Sr [blue]. The property which is not present in metals is the property of metals.

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Answer:

[tex] \small \fbox{\sf Option C, D and E are the correct answer.}[/tex]

Explanation:

The gravitational force of attraction between any two masses is given by the formula,

[tex]F = G \frac{m_1 \cdot m_2}{r^2}[/tex]

Where,

From above relation we can conclude that,

Hence, the greatest amount of gravitational force between a planet and it's moon would be largest when,

Option C, D and E are the correct answer.

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The category with the lowest joint relative frequency is Chocolate cupcakes with vanilla buttercream.

Relative frequency = Subgroup frequency / Total frequency

Some of the relative frequencies are given. From that we can find the remaining frequencies using basic addition and subtraction.

                                                 Vanilla     Chocolate      Total

Vanilla Buttercream                    0.15            0.06           0.21

Cream Cheese Icing                   0.19            0.14            0.33

Cookie Butter Buttercream        0.26           0.20           0.46

Total                                             0.60           0.40           1.00

Joint relative frequency = Joint frequency / Total frequency    

The joint relative frequency of

Therefore, the category with the lowest joint relative frequency is Chocolate cupcakes with vanilla buttercream.

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Answer:

1.8 m / s^2

Explanation:

F = ma       ( ignoring friction)

F/ m = a

9.7 / 5.5 = 1.8 m/s^2

Answer:A

Explanation: i think

Placing lights at either side of the mirror to directly brighten the complexion is the simplest way to help reduce shadows on the face. The temperature of this bulb should be comfortable as well (2,700 to 3,500 Kelvin).

Lighting in salons should be positioned to eliminate shadows. Placing lights at either side of the mirror to directly brighten the complexion is the simplest way to help reduce shadows on the face. The temperature of this bulb should be comfortable as well (2,700 to 3,500 Kelvin).

Compared to other spaces or buildings, a beauty salon has a lot more practical uses for lighting. It facilitates work, helps staff members see consumers clearly, and ensures that everything is carried out correctly.

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If the Hubble Space Telescope has a resolution of about 0.05, then the size of the smallest feature it can distinguish on the surface of Mercury, at closest approach to Earth is 92 m.

What is the earth?

The Earth is described as an ellipsoid with a circumference of about 40,000 km. The earth found is the densest planet in the Solar System and it is also the largest of the four rocky planets.

The Hubble Space Telescope is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned both as a vital research tool and as a public relations boon for astronomy.

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The coefficient of linear expansion, given that the length of the pipe increased by 1.5 cm is 1.67×10¯⁵ /°F

From the question given above, the following data were obtained

The coefficient of linear expansion can be obtained as illustrated below:

α = ∆L / L₁∆T

α = 0.015 / (10 × 90)

α = 0.015 / 900

α = 1.67×10¯⁵ /°F

Thus, we can conclude that the coefficient of linear expansion is 1.67×10¯⁵ /°F

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3.86×10^11 molecules of gas remain in the tube

P = nkT

n = P/kT

= hdg/kT

Number of molecules in the electron tube is = n×V = hdgV/kT

⟹n = hdg/kT

=

1.2×10^−10 ×13600 × 9.8 × 100 × 10^−6/1.38×10^−23 × 300

= 3.86×10^11

Cindy's average speed for the entire run is 200 m per min.

What is Cindy's average speed for the entire run?

First, to measure Cindy's average speed, we need to know that the average speed of Cindy would be the total distance she had covered while running by the total amount of time it took her to cover the distance. So, we need to measure her average rate of speed over the extent of her runs.

In order to calculate average speed we will calculate the total distance in meters traveled by Cindy.

Given:

Total distance = 2 Km

Convert km to meter, since she is running at a different speed measured in meter.

1 km = 1,000 m

Total distance = 2 Km = 2000 m

Then, the total amount of time in minutes it took her to cover this distance is: 2 (for the first 250 m) + 4 (for the next 1,000 m) + 1 (next 350 m) + 3 (time used for rest) = 10 minutes

Average speed = total distance  / total time

Average speed = 2000 m / 10 minutes

Therefore, her average speed  = 200 m per min

In summary, Cindy, though rested for 3 minutes, maintained an average speed of about 200 m per min for the entire run.

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As we carry out the experiment, the independent variable here is the he increase in temperature of the block of iron.

In many instances, it is very important for us to be able to understand the cause and effect relationship that is likely to exists between two variables. The only way that we could be able to in fact deduce the cause and effect relationship that does exist when we have two variables is by the use of an experiment.

Hence, when ever we are doing an experiment there must be an independent variable as well as well as a dependent variable. The variable that we are manipulating in the experiment is the independent variable. The dependent variable changes as we manipulate the independent variable.

As such, in the case of this experiment, the independent variable here is the increase in temperature of the block of iron.

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Given:

car is parked ouphill on a sloped street.

To draw the free body diagram.

Explanation:

he ffree-bodydiagram of the car is shown below.

Here, W is the force due to gravity which is its weight.

There is a frictional force, f acting towards the slope.

N is the normal force.

The car will remain at rest if no force is acting on the body.

The weight can be resolved into sine and cosine components.

The horizontal component of weight cancels out the normal force and the vertical component of weight cancels the frictional force.

Thus, the car is at rest as no net force is acting on it.

Answer:

the ball being pulled toward the ground

Explanation:

Answer: False

Explanation: the equator receives the most sun light because the the equator is closest to the sun.

The temperature change in the lead immediately   ∆T=1.56 K.

Temperature is a physical amount that expresses the hotness of a count number or radiation. There are 3 sorts of the temperature scale.

Temperature is a measure of the common kinetic power of the particles in an item. when the temperature will increase, the motion of the debris also increases. Temperature is measured with a thermometer or a calorimeter.

Temperature is a degree of the common kinetic strength of the particles of a substance. The higher the temperature of an item, the better its kinetic strength. Kinetic electricity is a form of electricity related to movement.

a.  ΔQ=mgh

ΔQ=0.5×9.80×20

ΔQ=98 J.

⇒∆U= ∆Q

⇒∆W=0

d. The temperature change is ∆T=1.56 K

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The equation describes the force acting on a wire carrying current I and having length L in a magnetic field. Where is the angle formed by the wire and the magnetic field, and F=ILB sin x.

magnitude of the magnetic force experience

by a cable is 2.64 x 10 ^ -3 N

F = ILB sin x

 = 2 x .03 x 44 x 10^ -3 x sin 90 = 2.64 x 10 ^ -3 N

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The x and y components of the velocity vector is 17.32 m/s and 10 m/s respectively.

The x-component of the ball's velocity is the velocity of the ball in the horizontal direction or x-axis.

The velocity of the ball in x-direction is calculated as follows;

Vx = V cosθ

where;

Vx = (20 m/s) x (cos 30)

Vx = 17.32 m/s

The velocity of the ball in y-direction is calculated as follows;

Vy = V sinθ

where;

Vy = 20 m/s x sin(30)

Vy = 10 m/s

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