Which statement best describes a weak base?(1 point)

a.) It donates protons and only partially dissociates in water.

b.) It accepts protons and only partially dissociates in water.

c.) it donates protons and completely dissociates in water.

d.) It accepts protons and completely dissociates in water.

Here is your Answer:-

If the distance separating the objects is tripled, then what is the new force? Explanation: -The electrostatic force is inversely related to the square of the separation distance. So if d is three times larger, then F is nine times smaller – that is, one-ninth the original value.

Answer:

Explanation:

Given:

r₂ = 3·r₁

________

F₂ / F₁ - ?

According to Coulomb's law:

F₁ = k·q₁·q₂ / r₁²

F₂ = k·q₁·q₂ / r₂²

F₂ / F₁  = (r₁ / r₂)²

F₂ / F₁  = ( r₁ / (3·r₁)² = (1 / 3)² = 1 / 9

Strength will decrease by 9 times

Answer:

below

Explanation:

When it is melted , the can undergoes a phase change from a solid to liquid.

To find the answers learn collision and magnitude.

What is magnitude?

The most straightforward way to define magnitude is "distance or quantity." In either an absolute or relative sense, it displays the size or motion of an object. It serves as a way to convey the size or scope of something. The majority of the time, magnitude refers to a length or size.

What is collision?

Collision, also known as impact, is the sudden, violent coming together of two bodies in direct contact, such as two pool cues, a golf club and a ball, a hammer and a nail, two railroad cars when coupled, or a falling object and a floor.

This is a completely inelastic collision , but Eq. 9−53 (V=m₁/m₁+m₂ V₁i)

is not easily applied since that equation is designed for use when the struck particle is initially stationary. To deal with this case (where particle 2 is already in motion), we return to the principle of momentum conservation:

m₁ V^→₁+m₂V^→₂=(m₁+m₂) V^→ ⇒  V^→ =2(4i-5j)+4(6i-2j)/2+4

(a) In unit -vector notation , then  V^→ =(2.67m/s)i+(-3.00m/s)j

(b) The magnitude of   V^→ is |V^→| =4.01m/s

(c) The direction of   V^→ is 48.4°c (measured clockwise, from the + x axis)

Therefore, unit -vector notation , then V^→ =(2.67m/s)i+(-3.00m/s)j, the magnitude of   V^→ is |V^→| =4.01m/s, the direction of   V^→ is 48.4°c (measured clockwise, from the + x axis)

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The equivalent formula for p = iv is the startfraction p over v endfraction = i

In physics, power measures the rate of transfer of electrical energy through a circuit per unit of time. It is denoted by P and is measured using the SI unit of power (watts or 1 joule/second). Electrical energy is usually supplied by batteries and produced by generators.

There are three types of power, true, reactive, and apparent, which are related in trigonometric form. This is called the power triangle. A power triangle that relates apparent power to active and reactive power. Power is measured in watts. One watt equals one joule per second.

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The weight or force due to gravity  (Fg) is equal to the sum of the tensions in both wires.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Frictional force allows the ball to stay in the hand while muscular force is employed to stop the motion of the ball during catching. Throughout this activity, the Earth's gravitational pull on the ball is constant.

The weight or force due to gravity  (Fg) is equal to the sum of the tensions in both wires.

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Compared to the initial velocity, the velocity of the ball at the maximum height is zero m/s.

We know that in the gravitational field, there is a force that acts to either accelerate or decelerate a body. If the body is accelerated, then the object must be moving in the same direction as gravity, that is, the object is moving downwards.

If the object is decelerated then the object is moving in a direction that is opposite to gravity, then the motion of the object must be slowed down continuously until the object is gradually brought to a stop.

When we through a ball upwards at a given speed, the speed of the ball would continue to decrease until  the ball would eventually attain a minimum speed of zero at the maximum height.

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Answer:

help!!

Explanation:

When a spring is only pulled by Bob with 200 N force, the spring stretches 20 cm. If the same spring is pulled by Bob and Carlos with 200 N forces each, the string will stretch 40 cm.

The elasticity is followed the Hooke's Law:

F = kx

Where:

F = force applied

k = spring constant

x = length of extension / compression

From the Hooke's Law, we know that the applied force is directly proportional to the change of length, or

F2 : F1 = x2 : x1

Parameters given in the problem:

F1 = 200 N  (Force applied by Bob)

x1 = 20 cm

F2 = 200 + 200 = 400 N (Forces applied aby Bob and Carlos)

Therefore,

400 : 200 = x2 : 20

x2 = 400 x 20 / 200 = 40 cm

Thus, when both Bob and Carlos pulls the spring, the spring will stretch 40 cm

Complete question:

The left end of a spring is attached to a wall. When Bob pulls on the right end with a 200 N force, he stretches the spring by 20 cm . The same spring is then used for a tug-of-war between Bob and Carlos. Each pulls on his end of the spring with a 200 N force.

How far does the spring stretch?

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Using the concepts of centripetal force, we got that  6.4m/sec² is the acceleration for  a greyhound who can run around these turns in the typical greyhound track  has turns that are 45 m diameter semicircles.

We are having some quantities:

Diameter of the semicircle, d = 45 m

Radius of the semicircle, r = 22.5 m      

Speed of greyhound, v = 12 m/s

The greyhound is moving under the action of centripetal acceleration. Its formula is given by :

a=(v²)/r

where v is the velocity of moving object and r the radius of the semicircle.

Putting the values, we get

=>a=[(12)×(12)]/22.5

=>a=[144/22.5]

=>a=6.4m/sec²

Hence, the racing greyhounds are capable of rounding corners at very high speeds. a typical greyhound track has turns that are 45 m diameter semicircles. a greyhound can run around these turns at a constant speed of 12 m/s, the acceleration in units of 6.4m/sec².

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Answer:

Mushroom are healthy and they are good your body and energy and other very important health proteins and stuff but it shouldn't only focus on mushrooms because they won't help you survive for your whole life.

Men felt they had fewer women and children because they thought they could rule the world because of their gender, so they had to abuse them.

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The undamped natural frequency, the damping ratio and the damped natural frequency are 3.162 rad / s, 0.211 and 3.098 rad / s respectively.

ωn = √ ( k / m )

ζ = c / 2 √ k m

ωn = Undamped natural frequency

k = Stiffness

m = Mass

ζ = Damping ratio

c = Damping co-efficient

m = 150 kg

k = 1500 N / m

c = 200 kg / s

ωn = √ ( 1500 / 150 )

ωn = 3.162 rad / s

ζ = 200 / 2 √ ( 1500 * 150 )

ζ = 0.211

Since ζ < 1,  the system is underdamped and the solution will oscillate.

ωd = ωn √ ( 1 - ζ² )

ωd = Damped natural frequency

ωd = 3.162 √ ( 1 - 0.211² )

ωd = 3.162 √ 0.96

ωd = 3.162 * 0.98

ωd = 3.098 rad / s

Therefore,

The given question is incomplete. The complete question is:

A spring-mass-damper system has mass of 150 kg, stiffness of 1500 N/m and damping coefficient of 200 kg/s. Calculate the undamped natural frequency, the damping ratio and the damped natural frequency. Is the system overdamped, underdamped or critically damped? Does the solution oscillate?

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The minimum radius of the plane's path found using the expression of centripetal acceleration is 179.24 m

What is centripetal acceleration?

When an object moves in uniform circular motion, it will experience an acceleration. This acceleration is of the type that changes its direction, rather than its speed. We call this type of acceleration, centripetal acceleration.

The centripetal acceleration is given by.

a = v^2/r

Where a= centripetal acceleration

           v = velocity

           R = radius

In the given question we are given,

v = 105 m/s/s

a = 6.27 times free-fall acceleration

  = 6.27 x 9.81 m/s/s

Obtaining the expression for the radius.

 a = v^2/r

  r = v^2/a

    = 105 x 105/ 9.81 x 6.27

    = 179.24 m

Hence, the minimum radius of the plane's path is 179.24 m

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In order to prevent the Ferris wheel from accelerate, the forces must be balanced. Newton's first law of motion states that unless an unbalanced force acts upon a body.

it will remain in its state of rest or uniform motion. The Ferris wheel moves at a consistent speed in a vertical circle, as stated in the question. Unbalanced force is what happens when two forces operating in opposition to one another on a body are not of the same size and magnitude and accelerate.

Keep in mind that the constant speed implies that the forces are in balance, as the Ferris wheel would accelerate under an unbalanced force.

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There solar and lunar eclipses aren't every month  because the Moon’s orbit is tilted with respect to Earth’s orbit.

When the moon passes between the sun and the Earth, a solar eclipse occurs. As a result, the moon creates a shadow on the Earth by preventing the sun's light from reaching its surface. This takes place in new moon. Up to five solar eclipses can be seen annually.

When Earth passes between the sun and the moon, a lunar eclipse occurs. As a result, the Earth's shadow falls over the moon, preventing the moon from receiving light from the sun. It happens on a full moon day. Up to three lunar eclipses can be seen annually.

The plane of the Moon's orbit around the Earth is tilted by around 5.15° in relation to the plane of the Earth's orbit around the Sun. That's way,  there aren't solar and lunar eclipses every month.

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Because Friction between gas orbiting at different speeds transfers angular momentum, also generating heat.

Friction is nothing but the opposing force acting on the device. In this case when accretion disks moves, it transfers angular momentum and and due to friction it also generates heat.

And as we know from conservations of energy that whatever heat is generated and angular momentum gets transferred, both will act as a negative parameter for a accretion disks.

That is the reason it is vey important to know and take care of the friction during designing or using of accretion disks.

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The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.

Density :

Density is calculated as:

Density = mass/volume

ρ = m/v

where,

ρ = density of the substance

m = mass of the substance

v = volume of the substance

ρ = m/v

ρ = 20.0/4.0

ρ = 5g/ml

so, density is 5g/ml.

The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.

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2P1 means the faster crane have double power compared to the first crane between two construction cranes are each able to lift a maximum load of 10000 n to a height of 150 m.

Maximum load means the weight of the load declared permissible by the competent authority of the country of registration of the vehicle; "Permissible maximum weight " of a vehicle means the weight of the vehicle and its maximum load when the vehicle is ready for the road.

A crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally.

work done by p1 = m*g*h

= 2*10^4*100

power p1 = 2*10^6 /t

power p2 = 2*10^6 /(t/3)

=3(2*10^6/t) = 3p1

s0, faster crane have (3p1-p1) = 2p1

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Current is known as the rate of flow of charges that is electrons. While the electrons move through the wire, the number of positive charges is equal to the number of negative charges formed due to motion. Therefore, a wire carrying is normally charged neutral.

An electric current is a circulation of charged particles, consisting of electrons or ions, moving through an electrical conductor or space. it's miles measured because of the net fee of going with the flow of electric price via a floor or right into a controlled quantity. The moving debris is referred to as charge companies, which may be one of the numerous forms of particles, depending on the conductor. In electric-powered circuits, the rate providers are frequently electrons moving through a twine. In semiconductors, they may be electrons or holes. In an electrolyte the rate providers are ions, at the same time in plasma, ionized gasoline, they're ions and electrons.  

The SI unit of electrical modern-day is the ampere or amp, which is the waft of electrical fee across a surface at the charge of one coulomb in keeping with the second.  

The ampere (image: A) is an SI base unit. electric modern-day is measured by the usage of a tool called an ammeter. electric powered currents create magnetic fields, that are used in cars, generators, inductors, and transformers. In everyday conductors, they motivate Joule heating, which creates light in incandescent light bulbs. Time-varying currents emit electromagnetic waves, that are used in telecommunications to broadcast facts.

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The reason for the sound is the fact that there are other channels that are interfering with the particular channel that she was looking for.

We know that radio waves are part of the electromagnetic waves. These are waves that do not require any material medium for them to become propagated thus they are able to move from one place to another even in a vacuum. Radio waves are known to have a long wavelength thus they can travel a far distance.

Given what we have said, we know that a radio is a device that have been built so as to be able to receive the radio waves. However, there are a number of frequencies that we are looking at that could be received by the radio at the same time. This could be referred to by the use of the word co channel interference.

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The present value of an ordinary annuity $3000  per semiannual period for 6 years at 11% interest rate is  $25,855.55

The present value of an ordinary annuity is given by:

P = PMT x [1 - (1 + r)⁻ⁿ] / r

Where:

P = present value

PMT = amount of annuity payment per period

r = interest rate per period

n = number of periods

Since it is semiannually compounded, the number of periods per year = 2. Therefore,

r = 11%/2 = 0.055

n = 2 x 6 years = 12

PMT = 3000

Hence,

P = 3000 x [1 - (1 + 0.055)⁻¹²] / 0.055

P =  25,855.55

Hence, the present value is  $25,855.55

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Point at which potential energy is being transformed to kinetic energy is point F.

An object has potential energy when it is not in motion. Once a force has been applied, the potential energy changes to kinetic energy.

When an object is released from height, it is naturally pulled down towards the ground by the force of gravity. Object falls towards the ground as potential energy transforms into its kinetic energy.

Potential energy becomes kinetic when the object storing the potential energy starts to move. Since the potential energy is stored in the object, movement would release the energy.

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Answer:

The Tesla moves approx. 25 meters from rest before reaching 60 mi/hr

Explanation:

Given:

Initial velocity = 0 m/s

Final velocity = 26.8 m/s

Time = 1.9 seconds

Acceleration = change in velocity/time

[tex]a = \frac{26.8}{1.9}[/tex]

The equation to find displacement (Δx) with given starting and final velocity, time, and acceleration is:

[tex]x = x_{0} + v_{0}t + \frac{1}{2} at^{2}[/tex]

Starting position and initial velocity both equal 0, so

[tex]x = \frac{1}{2} at^{2}[/tex]

[tex]x=\frac{1}{2} (\frac{26.8}{1.9})(1.9)^{2}[/tex]

x = 25.46m

Rounded to the nearest whole number, x = 25m

The magnitude of a single extra force necessary to keep the rod in its mechanical equilibrium is 20N in the same direction with the 5.0kg blocks' weight force.

A system is in the mechanical equilibrium when it is at rest and the resultant of the force working on the system is equal to zero (0) or no movement happen within the system.

Please take a look at the drawing below.

The existance of 2 blocks attached to each of the rod's ends are enable the rod to move in a circular form. Hence, we could conclude that both of the blocks are giving centripetal forces to the rod.

Centripetal force is the force that works in a system and make a system to move within the curved path. The direction of this force is always perpendicular to the system fixed center point.

On the case, the center point is the center of gravity of rod, where the weight force (W) working in the system. Assuming that the rod is a symetrical solid rod, hence the center point is exatcly at the middle of the rod.

Both of the blocks are giving weight forces to the system with their mass. However since they are differences on their mass, their weight forces are also working differently.

Both of the blocks are working to the system and moving the system into their respective direction, which are the opposite of each other.

Hence, we could conclude that we need to give extra force into one of the block's force direction to balance all the forces working in the system.

Because we want the system to be in its mechanical equilibrium, we have to use the First Law of Newton where the force resultant of the system must be equal to zero (0).

We could write the equation for this system:

∑F = 0

Fs1 - Fs2 + Fs3= 0

(W1 × 1) - (W2 × 1) + (F3 × 1) = 0

(7×10×1) - (5×10×1) + F3 =0

70 - 50 + F3 = 0

F3 = - 20N

Hence, we need to give an extra 20N force in the same direction with the 5.0kg blocks' weight force to make system reaches its mechanical equilibrium.

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150 Newton is the centripetal force, when a 60.-kilogram car travels clockwise in a horizontal circle of radius 10. meters at 5.0 meters per second.

centripetal force F=mv²/r

m=60 kg

v=5 m/s

r= 10 m

F=mv²/r

F=60×5×5÷10

F=150 N

Any movement along a curved path accelerates, making applying force to the path's center of curvature necessary. This force is known as centripetal, which means "center seeking."

According to the Centripetal Force Formula, the centripetal force is equal to the product of the radius (in meters) and the square of the tangential velocity (in meters per second) (in meters). With a doubling of tangential velocity, this formula predicts that the centripetal force will also double.

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Answer:

3 m/s

Explanation:

distance (rise) over time (run) gives speed, that is velocity

it can be found using the gradient (m) formula

m=(y2-y1)/(x2-x1)

m=(15-3)/(4-0) =12/4=3 m/s

Answer:

3 m/s

Explanation:

.....as the answer for your question is 3m/s ..

THANK YOU..

To learn about the velocity and momentum.

What is velocity?

The direction of motion of a body or object is determined by its velocity. In most cases, speed is a scalar variable. In their most basic form, vector quantities are speeds. It measures how quickly a distance changes within an area. What counts is the change in displacement rate.

What is momentum?

Mass in motion is quantified by momentum, or how much mass is moving in how much space. It typically has the letter P.

find

how long would it take to complete the entire project Y each story point is two weeks long ?

The product story point is 410 story points and 18 story points per spirit.

so the number of spirits in the product is given as

the number of spirit = 410/18 =  23

23 spirits

the each spirits take a two weeks, so

the time to complete the entire project = so it take to complete entire project.

Therefore, 23 sprint and each sprint is two weeks in duration.

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Answer:

A. Because only Mercury and Venus orbit closer to the Sun than we do.

Explanation:

From the earth, the only planetary transits we can see are those of Mercury and Venus, because those are the only planets that can be between us and the sun.

Answer:

a) Because only Mercury and Venus orbit closer to the Sun than we do.

Explanation:

We can’t see planetary transits from planets in our solar system other than Mercury and Venus because, only Mercury and Venus orbit closer to the Sun than we do. Hence, the option (a) is correct.

The string when the ball passes through its lowest position is 5N.

Solution:

Tension on the ball, T = mg

T = 0.5*9.8 = 4.9

Approximately equal to 5N.

At the highest point, there is less weight more centrifugal force, and no tension. So the stress at the bottom point is 6 mg which is zero as described for the top point. The rope tension is always directed toward the center of the circle. The following means that tension is up while gravity is down. Zero voltage is loose.

Strings and ropes are often idealized as having length but no mass and no cross-section. Most players are familiar with the general principle that less tension means more power, and more tension means more control. Strings with lower tension stretch more on impact and store more energy. When the ball bounces off the racquet it returns more energy and launches it at a higher velocity.

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In 1964 Gell Mann and Zweig introduced a baryonic triplet consisting of three hypothetical particles that are termed as Quarks.

The quark model is able to explain many features of elementary particles and gives a good insight into the structure of baryons and mesons.

Quarks are the fermions as the basic building block if we use fermions then we can get fermions and bosons. These bosons are assumed as antiquark pairs.

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