Do Now: You are asked to go to downtown Newark and pick up a small bag of materials for a grant project. Pay is $25. The materials will be delivered to Room 224, 2nd floor in Barringer High School. Create a numbered procedure, a list of steps that you will take to pick up and deliver the materials. Click for Example

1) neuron stars

2) centrifugal force

For a successful final touch of a construction venture, key stakeholders consisting of the consumer/proprietor, architect/layout group, and creation contractor are crucial. Risk management is necessary to perceive and mitigate capacity risks, ensuring project success and minimizing disruption

The 3 important stakeholders for the development of a new mall in Alexandra are:

During the construction of an avenue in a particular network, the network is represented by:

Local Authorities: The local authorities, which include the municipal or city council, represent the community's pastimes. Their duties consist of engaging with the network to apprehend their needs and issues associated with the road construction project.

Before any sort of Civil Engineering mission is executed, the subsequent steps want to be taken to ensure the viability of the challenge:

The hierarchy of running for a contractor sporting out the development of a bridge typically consists of the subsequent degrees:

To draw the bar chart (also referred to as a Gantt chart) for a 50 km street creation undertaking with a duration of 10 days, the chart could represent the obligations and their respective intervals. However, a standard bar chart for an avenue creation undertaking may also include duties including surveying, excavation, laying subbase, paving, and street markings, amongst others.

The horizontal axis represents the timeline (in days), and the vertical axis represents the responsibilities. Each undertaking is represented with the aid of a horizontal bar that suggests its length.

Question 2 (10):

2.1 Risk control is vital in a venture for the following motives:

Overall, change management is important for figuring out, analyzing, and responding to risks in a systematic and proactive manner. It enables ensuring task success by using lowering uncertainties and maximizing opportunities for task delivery within the preferred parameters.

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Answer:

Doppler Effect refers to the change in wave frequency during the relative motion between a wave source and its observer

Explanation:

Like when a sound object moves towards you, the frequency of the sound waves increases, leading to a higher pitch.

Take pictures of the new plants we find in a garden, use plant identification books or internet resources to identify their characteristics, talk to specialists.

We can use a plant identification guide or an app to assist us in identifying the plants. For more information, we can either go online or consult a horticultural or plant specialist.

We can even visit a nearby nursery or botanic park. To understand more about the care, culture, and any potential applications or advantages of the plants we find in the backyard of the house, we can also conduct research on them online or in books.

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Answer:

A. amplitude

Explanation:

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Answer:

Approximately \(19.6\; {\rm m}\) (assuming that \(g = 9.81\; {\rm m\cdot s^{-2}}\) and that air resistance is negligible.)

Explanation:

Assume that the air resistance on the rock is negligible. During the descent, the acceleration \(a\) of the rock will be constant: \(a = (-g) = (-9.81)\; {\rm m\cdot s^{-2}}\).

It is given that the descent took \(t = 2.00\; {\rm s}\). Let \(x\) denote the displacement (change in position) of the stone. Apply the SUVAT equation \(x = (1/2)\, a\, t^{2}\) to find displacement \(x\!\):

\(\begin{aligned}x &= \frac{1}{2}\, a\, t^{2} \\ &= \frac{1}{2}\, ((-9.81)\; {\rm m\cdot s^{-2}})\, (2.00\; {\rm s})^{2} \\ &\approx (-19.6)\; {\rm m}\end{aligned}\).

Note that \(x\) is negative since the water is below the initial position of the rock. Therefore, the distance to the water will be approximately \(19.6\; {\rm m}\).

The time constant (in ms) of the RC circuit is 3.75 ms. Hence, the correct option is  (d) 3.75 ms.

The rate of decay of the current in a charging capacitor is proportional to the current in the circuit at that time. Therefore, it takes longer for a larger current to decay than for a smaller current to decay in a charging capacitor.A capacitor is discharged through a 20.0 Ω resistor.

The discharge current decreases to 22.0% of its initial value in 1.50 ms. We can obtain the time constant of the RC circuit using the following formula:$$I=I_{o} e^{-t / \tau}$$Where, I = instantaneous current Io = initial current t = time constant R = resistance of the circuit C = capacitance of the circuit

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The time constant of the RC circuit is approximately 0.674 m s.

To determine the time constant (τ) of an RC circuit, we can use the formula:

τ = RC

Given that the discharge current decreases to 22.0% of its initial value in 1.50 m s, we can calculate the time constant as follows:

The percentage of the initial current remaining after time t is given by the equation:

I(t) =\(I_oe^{(-t/\tau)\)

Where:

I(t) = current at time t

I₀ = initial current

e = Euler's number (approximately 2.71828)

t = time

τ = time constant

We are given that the discharge current decreases to 22.0% of its initial value. Therefore, we can set up the following equation:

0.22 =\(e^{(-1.50/\tau)\)

To solve for τ, we can take the natural logarithm (ln) of both sides:

ln(0.22) = \(\frac{-1.50}{\tau}\)

Rearranging the equation to solve for τ:

τ = \(\frac{-1.50 }{ ln(0.22)}\)

Calculating this expression:

τ ≈ 0.674 m s

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Answer:

Show the wave

Explanation:

Answer:

The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, it's frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength get longer.

Explanation:

I majored in Physics

EAC( Low-energy lightbulb )=18.47 EAC( Conventional lightbulb )=7.33 Conventional lightbulb is cheaper to operate. Option D

To calculate the Equivalent Annual Costs (EAC), we need to consider the initial cost, maintenance costs, and the present value of future costs, taking into account the discount rate.

The EAC (Equivalent Annual Cost) is calculated by summing up the annual costs of the lightbulb over its lifetime, discounted at the real discount rate of 4%.

For the low-energy lightbulb:

EAC = Cost of bulb + Present value of annual electricity cost

= $3.60 + ($2.00 / (1 + 0.04)^1) + ($2.00 / (1 + 0.04)^2) + ... + ($2.00 / (1 + 0.04)^9)

≈ $18.47

For the conventional lightbulb:

EAC = Cost of bulb + Present value of annual electricity cost

= $0.60 + ($7.00 / (1 + 0.04)^1) + ($7.00 / (1 + 0.04)^2) + ... + ($7.00 / (1 + 0.04)^1)

≈ $7.33

Since the EAC for the low-energy lightbulb is $18.47 per year and the EAC for the conventional lightbulb is $7.33 per year, the conventional lightbulb is cheaper to operate assuming a burnt-out bulb is replaced by an identical bulb.

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PE=KE

mgh=1/2kx²

4.2 x 9.8 x h = 1/2 x 570 x (5.5)²

h = 209.45 m

According to the graph, Car A and car B are colliding at 1 hour when  the cars start from the same position and are traveling in the same direction.

When two cars collide, their velocity and acceleration will both change drastically. The velocity of both cars will become zero, and the acceleration of both cars will become negative, as the cars will decelerate rapidly due to the force of the collision. When two cars collide, the direction of each car will change depending on the speed and angle of impact. The faster car will generally have more of an effect on the direction of the other car. Generally, the cars will move away from each other in different directions after the collision.

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The net momentum of the system before the collision is given by the expression: Momentum before = m1v1 + m2v2where m1 and v1 are the mass and velocity of the cue ball respectively and m2 and v2 are the mass and velocity of the eight ball respectively.

Substituting in the given values, we have:Momentum before = (0.6 kg) (3.0 m/s) + (0.55 kg) (2.0 m/s) = 1.80 kg m/s + 1.10 kg m/s = 2.90 kg m/s. The net momentum of the system after the collision is given by the expression:Momentum after = m1v1' + m2v2'where v1' and v2' are the velocities of the cue ball and eight ball respectively after the collision.

Substituting in the given values, we have: Momentum after = (0.6 kg) (2.0 m/s cos 40°) + (0.55 kg) (v2')Momentum after = 1.20 cos 40° kg m/s + (0.55 kg) (v2')Momentum after = 0.92 kg m/s + 0.55 kg v2'Conservation of momentum principle states that the total momentum before the collision must equal the total momentum after the collision: Momentum before = Momentum after2.90 kg m/s = 0.92 kg m/s + 0.55 kg v2'Solving for v2', we get:v2' = (2.90 kg m/s - 0.92 kg m/s) / 0.55 kgv2' = 4.71 m/s.

The north component (y-component) of the momentum of the cue ball after collision is given by the expression:py = m1v1' sin θSubstituting the given values, we have:py = (0.6 kg) (2.0 m/s sin 40°)py = 0.78 kg m/sTherefore, the final velocity of the eight ball is 4.71 m/s.

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Answer:

the wavelength is 9.8 meters

Explanation:

We can use the relationship:

Velocity = wavelenght*frequency.

Initially we have:

wavelenght = 4.9m

velocity = 9.8m/s

then:

9.8m/s =  4.9m*f

f = 9.8m/s/4.9m =  2*1/s

now, if the velocity is doubled and the frequency remains the same, we have:

2*9.8m/s = wavelenght*2*1/s

wavelenght = (2*9.8m/s)*(1/2)s = 9.8 m

Answer:

9.8

Explanation:

Answer:

The weight and the mass of an object are related because the weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. w=mg

Answer:

For metric-system conversions, follow this method: Sound travels at about 340 m/s, so multiply the number of seconds you counted by 340, and you'll know how many meters away lightning struck. A three-second count, then, would place the lightning strike about 1,020 m away, or roughly 1 km.

Explanation:

hope it hep and if it doesnt sorry

The distance struck by the lighting flashes is 680 m.

The given parameters;

The distance struck by the lighting is calculated by applying the principle of echo as follows;

\(v = \frac{2d}{t} \\\\2d = vt\\\\d = \frac{vt}{2} \\\\d = \frac{340 \times 4}{2} \\\\d = 680 \ m\)

Thus, the distance struck by the lighting flashes is 680 m.

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Answer:

Picture?

Explanation:

The roller coaster will have equal kinetic and potential energy at any point starting from rest and reaching the minimum height.

The given problem is based on the concepts and fundamentals of kinetic energy and potential energy. The energy of an object by virtue of its position is known as kinetic energy. And the energy of object by virtue of its position is called potential energy.

Thus, we can conclude that the roller coaster will have equal kinetic and potential energy at any point starting from rest and reaching the minimum height.

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The required velocity of second mass after explosion is calculated to be 7 m/s.

The given mass of the object = 4 kg

The initial velocity of the mass = 4 m/s

The mass of the first, second parts each = 2 kg

The velocity of the first part = 3 m/s

The inclination of the mass with the north of east is given as 60°.

V₁x = V₁ cosθ = 3 cos60° = 3/2 = 1.5 m/s

V₁y = V₁ sinθ = 3 sin60° = 2.6 m/s

We know the equation,

P initial = P final

where,

P is momentum

So, m V = m₁ V₁ + m₂ V₂

Putting the values, we have, in x-direction,

⇒ 4(4) = 2(1.5) + 2 V₂

⇒ 16 = 3 + 2 V₂

⇒ 2 V₂ = 13

⇒ V₂x = 13/2 = 6.5 m/s

In y-direction, we have,

m V = m₁ V₁ + m₂ V₂

⇒ 4(0) = 2(2.6) + 2 V₂

⇒ 0 = 5.2 + 2 V₂

⇒ 2 V₂ = -5.2

⇒ V₂y = -2.6 m/s

The magnitude of velocity of the other mass after the explosion is,

⇒ √[6.5² + (-2.6)²] = √(42.25 + 6.76) = 7 m/s

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Answer:

Earth has a tilted axis .  (first answer from the option list)

Explanation:

The planet probably doesn't have a tilted axis of rotation

(first answer from the option list)

Answer:

The net force on the object is zero

Explanation:

An object is moving with constant non-zero velocity. If velocity is constant, it means that the change in velocity is equal to 0. As a result, acceleration of the object is equal to 0. Net force is the product of mass and acceleration. Hence, the correct option is (d) "The net force on the object is zero".

Answer:

50 meters

Explanation:

Let's start by converting to m/s. There are 3600 seconds in an hour and 1000 meters in a kilometer, meaning that 72km/h is 20m/s.

\(v_f=v_o+at\)

Since the car starts at rest, you can write the following equation:

\(20=0+a(5) \\\\a=20\div 5=4 m/s^2\)

Now that you have the acceleration, you can do this:

\(d=v_o+\dfrac{1}{2}at^2\)

Once again, there is no initial velocity:

\(d=\dfrac{1}{2}(4)(5)^2=2 \cdot 25=50m\)

Hope this helps!

Newton and Einstein believe that the factor directly affects gravity is (a) the mass of objects.

Factor affects gravity:

The force that pulls items toward the center of a planet or other entity is called gravity. As we know gravity is a type of force that is mainly affected by the mass of the object and the distance between the objects. The object which has more mass will have large gravity and a smaller mass has small gravity and when the distance between the objects is smaller then the gravity is larger. Thus, the gravity is directly proportional to the mass of the objects and the inversely proportional to the distance between the objects.

Both Newton and Einstein believe that the gravity directly dependent on the mass of the objects.

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Answer:

Newton and Einstein believe that the factor directly affects gravity is (a) the mass of objects.

Factor affects gravity:

The force that pulls items toward the center of a planet or other entity is called gravity. As we know gravity is a type of force that is mainly affected by the mass of the object and the distance between the objects. The object which has more mass will have large gravity and a smaller mass has small gravity and when the distance between the objects is smaller then the gravity is larger. Thus, the gravity is directly proportional to the mass of the objects and the inversely proportional to the distance between the objects.

Both Newton and Einstein believe that the gravity directly dependent on the mass of the objects.

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Explanation:

The speed of the river is 0.5 Km/hr

Let X be the speed of the boat.

Let Y be the speed of the river.

Downstream speed

X - Y = 4

Upstream speed

X + Y = 5

By solving, we get

2X = 9

X =  4.5 Km/hr

Y =  0.5Km/hr

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Answer: Just took it!

Explanation:

Mechanical energy flows out of the magnets and into the electric charges in the loop of wire. Therefore,  the correct option is option A among all the given options.    

A current is the movement of particles (electrons) across wires and components. It is the charge flow rate. If an electric charge passes through a conductor, scientists say the conductor has an electric current. Electrons form a charge flow in circuits that use metallic conductors.

Electromagnetic induction in a moving loop of wire cause an electric generator to produce an electric current by mechanical energy flows out of the magnets and into the electric charges in the loop of wire cause.

Therefore,  the correct option is option A among all the given options.    

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During phase shift, the substance's molecules' average kinetic energy remains constant.

Simply put, molecules move more quickly as kinetic energy rises. Nevertheless, molecules change phases when potential energy rises. The molecule changes phases as a result of an increase in potential energy.

In a phase change, matter moves from one state to another either by gaining energy through heat and entering a more energetic state, or by losing energy through heat and entering a state with lower energy.

The energy supplied during phase change is only used to separate the molecules; none of it is used to boost the kinetic energy of the molecules. Therefore, since the molecules' kinetic energy is constant, its temperature won't increase.

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Answer: the answer is A.

Explanation:

brainliest please?

Answer:

A.

Cognition helps determine if a consequence is influential enough to control behavior.

Explanation:

This is right on edg. 2020

The gravitational force between them will change by a factor 1/9.

We need to know about gravitational force to solve this problem. The gravitational force is the force caused by two masses objects. The magnitude of gravitational force can be determined as

F = G.m1.m2 / R²

where F is the gravitational force, G is the gravitational constant (6.674 × 10¯¹¹ Nm²/kg²), m1 and m2 are the mass of the object and R is the radius.

From the question above, we know that

R2 = 3R1

By substituting the following parameters, we get

F2/F1 = G.m1.m2 / R2² / G.m1.m2 / R1²

F2/F1 = G.m1.m2 / (3R1)² / G.m1.m2 / R1²

F2/F1 = 1/9

Hence, the gravitational force between them will change by a factor 1/9.

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An inelastic collision between two objects is characterized by the fact that a) the total momentum of the system is conserved. Choice A is correct

Inelastic collisions are the collisions in which the kinetic energy is lost. The momentum of the system is conserved in inelastic collisions, but kinetic energy is not. This is because some of the kinetic energy was transferred to another.

Suppose two similar cars are approaching. They collide, but the sled is equipped with a magnetic clutch so that when they collide they combine into a single agglomerate. This type of collision is completely inelastic as the maximum possible kinetic energy is lost. This does not mean that the final kinetic energy of the system is necessarily zero. Momentum is not yet maintained.

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The velocity of the cannonball along the x axis after 7.59 s is therefore:vx = (150 m/s)(cos 0°)(7.59 s)vx = 1139.85 m.(d) Dimensionless velocity and dimensionless time are given by:v' = v/vTt' = 2gh/ vT²These expressions simplify the solution to part (c).

(a)  Terminal velocity along y axis is the maximum velocity that the cannonball can reach along y-axis as it falls. When it reaches terminal velocity, the acceleration of the cannonball becomes zero since its weight is balanced by air resistance. According to Stoke’s law, the drag force (Fd) experienced by a sphere moving slowly in a fluid is given by: Fd = 6πηrvwhere:η is the kinematic viscosity of the fluidv is the speed of the sphere, andr is the radius of the sphereHence, the terminal velocity (vT) of the cannonball is given by:  mg = 4/3 πr³ρg   [weight of cannonball = volume of cannonball x density of cannonball x acceleration due to gravity]6πηrvT = mgvT = mg/ (6πηr)The velocity of the cannonball along the y-axis is zero at the start and it reaches terminal velocity after falling through some height h.The velocity of the cannonball at any time t is given by:v = (2gh/ 3πr² ρ)½The velocity of the cannonball along the y axis is 131.3 m/s.(b)At 95% of terminal velocity, the velocity of the cannonball is 124.74 m/sUsing the expression:v = (2gh/ 3πr² ρ)½124.74 = (2gh/ 3πr² ρ)½h = (3/2)(124.74)² πr²ρ/g = 1509.65 mTherefore, it takes 7.59 s to reach 95% of the terminal velocity.(c)At the time determined in part (b), the velocity of the cannonball along the x axis can be calculated using the equation below:vx = vo xcosθtwhere vo is the initial velocity along the x-axis, θ is the angle of projection, and t is the time taken.At launch, the initial velocity along the x axis is 150 m/s and the angle of projection is 0°.

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