As more resistors are added in parallel across a constant voltage source, the power supplied by the source does which of the following? A) increases B) decreases. C) does not change. 8) In the circuit shown in the figure, all the lightbulbs are identical. Which of the following is the correct ranking of the brightness of the bulbs? B A) B and Chave equal brightness, and A is the dimmest. B) A and B have equal brightness, and C is the dimmest. C) A is brightest, C is dimmest, and B is in between. D) A is the brightest, and B and C have equal brightness but less than A. E) All three bulbs have the same brightness

The correct option that describes the relationship between the new moon phase and constellations is: During the new moon phase, constellations are on the same side of the earth as the sun.

New Moon Phase and ConstellationsThe moon revolves around the Earth, and the Earth revolves around the sun. Because of this motion, the sun and the moon occupy different locations in the sky during various periods of the day and night.New moon phase: A new moon occurs when the moon is located between the Earth and the sun. During the new moon phase, the side of the moon that faces Earth is dark, and we cannot see the moon because the sun's light does not reflect off it towards Earth.Constellations: The term "constellation" refers to a particular configuration of stars that appears to be connected from Earth's perspective. Constellations have no physical connection; they are just stars that appear to be close to each other.New Moon Phase and Constellations RelationshipDuring the new moon phase, the Earth is between the sun and the moon. So, constellations are on the same side of the Earth as the sun, and are thus hidden from view. Therefore, the correct option that describes the relationship between the new moon phase and constellations is: During the new moon phase, constellations are on the same side of the earth as the sun.

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Answer:

The mass of the metal is 2.7 Kg.

Explanation:

As we know the mass of an object is:

m = ρ * v .........(i)

where ρ is the density of the metal cube, &

v is the volume of the cube

Now as per the question:

Density of metal cube, ρ = 2700 kg/m³

Edge Length, l = 10 cm

∵ 1 m = 100 cm

∴ edge length, l = 0.1 m

∴ Volume, v = (l)³ = (0.1)³ = 0.001 m³

Now putting all the values in equation (i), we get

m = 2700 * 0.001 kg

m = 2.7 kg

∴ A metal cube of density 2700 kg/m³ and edge length 10 cm has a mass of 2.7 kg.

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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:

5 m

Explanation:

formula,

speed = frequency x wavelength

speed / frequency = wavelength

sub in values

65/ 13 = wavelength

5 m = wavelength

hope this helps please mark

A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 ×\(10^4\) meters. If the truck's mass is 7,000 kilograms, the work done to reach this distance is 3.3× \(10^6\) joules.

The correct answer is option E.

To calculate the work done by the truck to cover a distance of 5.8 × \(10^4\)meters, we need to use the equation for work:

Work = Force × Distance

In this case, the force can be calculated using Newton's second law:

Force = mass × acceleration

Where:

Acceleration (a) = \(0.0083 meters/second^2\)

Distance (d) = 5.8 ×\(10^4\) meters

Mass (m) = 7,000 kilograms

First, let's calculate the force exerted by the truck:

Force = mass × acceleration = (7,000 kg) ×\((0.0083 meters/second^2)\)= 57.1 Newtons

Next, we can calculate the work done:

Work = Force × Distance = (57.1 N) × (5.8 × 10^4 meters) = 3.3158 × \(10^6\)joules

Rounded to the nearest significant figure, the work done by the truck is approximately 3.3 × \(10^6\) joules.

Therefore, the correct answer is E.

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The question probable may be:

A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 ×\(10^4\)meters. If the truck's mass is 7,000 kilograms, what is the work done to reach this distance?

A. 1.7 × \(10^6\) joules

B. 3.4 ×\(10^6\) joules

C. 5.6 × \(10^6\)joules

D. 6.8 ×  \(10^6\)joules

E. 3,3  ×\(10^6\)  joules

The formula for the time period (T) of the pendulum is:

T = 2π * √(L/g)

Where L is the length of the pendulum and g is the acceleration due to gravity.

Substituting the given values into the above formula:

T = 2π * √(1.633/9.8)T

≈ 1.585 seconds

Therefore, it takes approximately 1.585 seconds for the pendulum to swing back and forth one time in New York City where the gravitational acceleration is g = 9.8 meters per second squared.

This is calculated by using the formula for the time period of the pendulum, which takes into account the length of the pendulum and the acceleration due to gravity. The length of the pendulum in this case is given as Y = 1.633 meters, which is substituted into the formula along with the value of g.

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Answer:

A. Astanding wave is generated

Explanation:

Standing waves arise from the interference of traveling and reflected waves, which have the same wavelength at the point of reflection, but mutually opposite directions of propagation.

Answer:

Velocity

Explanation:

When unbalanced forces acts on an object the velocity of the object changes. This is because, unbalanced forces causes a body to accelerate.

Acceleration is the rate of change of velocity with time taken.

An unbalanced force on a body causes a net force greater than zero and this makes the velocity of the body to change.

Therefore, an unbalanced force on a body will cause a change in the velocity of the body.

Answer:

velocity

Explanation:

mhm

The frequency of oscillation of a simple pendulum depends on its length and the gravitational acceleration. Increasing the mass (1) or decreasing the initial angular displacement (2) will not affect the frequency.

The frequency of oscillation of a simple pendulum can be affected by changes in the length of the pendulum and the gravitational acceleration.

Therefore, increasing the length of the pendulum would decrease its frequency of oscillation, while decreasing the gravitational acceleration would also decrease the frequency of oscillation.

However, hanging the pendulum in an elevator accelerating downward would also change the gravitational acceleration, resulting in a change in the frequency of oscillation. Increasing the mass or decreasing the initial angular displacement would not have an effect on the frequency of oscillation.

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Answer:

B and D

Explanation:

Both a CD and alarm clock have magnetic properties of metal alloys and polymers.

The strength of the magnetic field in the center of the system, which is equally spaced from the wires. . B = μ0I/(2πr) for the magnetic field's strength.

And this is where the second important characteristic comes into play. The equivalent surface current density I = dI/ds =B = μ0I/(2πr), which is proportional to the magnetic field Br of the permanent magnet material, may be used to compute the magnetic field of permanent magnets. In this case, the permeability of open space is μ = 4 107 A/Tm.

The magnetic field lines encircle a long, straight wire when it is carrying a current I. You may find the magnetic field direction by circling the wire with your fingers while pointing your right thumb in the direction of the current.

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Answer:

2. wavelength

3. Crest

4. Rest

5. Trough

6. Amplitude

Explanation:

Suppose that there is a uniform magnetic field of magnitude 0.00791 tesla that stores 0.0436 joules of energy in a certain volume of space. If this same amount of energy were stored in this same volume of space by a uniform electric field instead, the magnitude of this electric field would have to be 1.7×10⁵N/C.

Given information: Magnetic field strength, B = 0.00791 T

Energy stored in a magnetic field, E = 0.0436 JThe energy stored in a magnetic field can be calculated using the equation;E = (1/2)B²μ0VWhere, V = Volume and μ₀ = magnetic constant

For a uniform electric field, the energy stored in the volume V is given by the expression;

E = (1/2)ε0E²V

Where, E = Electric field strength and ε₀ = electric constant

Equating the two equations: (1/2)B²μ0V = (1/2)ε0E²V

Here, the volume of space V cancels out from both sides.

Hence, B²μ0 = ε0E²

E = √(B²μ0 / ε0) 

E = B√(μ0 / ε0)

We know that, μ₀/ε₀ = c², where c is the speed of light.

Hence, E = Bc

Substituting the given values in the above equation;E = 0.00791 x 3 x 10^8 N/C

E = 1.7 × 10⁵ N/C

Therefore, the magnitude of the electric field would have to be 1.7 × 10⁵N/C.

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The x-ray tube and image receptor move in opposite directions around a stationary axis or pivot point during the exposure.

This is referred to as the pivot or fulcrum. The x-ray tube and image receptor can travel in a circular or elliptical motion around the patient thanks to the pivot point, which is normally in the middle of the patient's body. Several images of the same area can be obtained thanks to the motion of the x-ray tube and image receptor, giving more in-depth knowledge of the patient's anatomy. The motion can be managed manually or by a computer, and the speed and direction of the movement can be altered to improve the quality of the image.

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Answer:

10,350 m

Explanation:

Distance = speed x time

Distance = 34.5 m/s x 300 s = 10,350 m

Answer:

If lightning McQueen travels at 34.5 m/s 300 secs

= 34.5*300

= 10,350 meters

Therefore we can see that lightning McQueen would travel 10,350 meter or 10.35 KM in 300secs or 5 mins if he has a stable speed of 34.5m/s

In order to determine the velocity of the block at the instant θ=60°, we need to use the equation: v = rω. Where v is the velocity of the block, r is the distance between the block and the center of rotation, and ω is the angular velocity of link ab.

At the instant θ=60°, the distance between the block and the center of rotation is the length of link bc, which is given by: bc = 0.3m.

The angular velocity of link ab is given as: ω = 4rad/s.

Therefore, the velocity of the block at the instant θ=60° is: v = bc x ω = 0.3m x 4rad/s = 1.2m/s.

So, the velocity of the block at the instant θ=60° is 1.2m/s.

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K.E = ½ mv²

Explanation:

The formula of Kinetic Energy

K.E = ½ mv²

Where,

m = mass of object

v = velocity of object

The Standard Unit of kinetic energy is Joule, while the Imperial Unit of kinetic energy is foot-pound

-TheUnknownScientist

Answer:

\(\boxed{\bold { \large { \boxed {KE=\frac{1}{2} mv^2}}}}\)

Explanation:

Kinetic energy formula

\(\displaystyle KE=\frac{1}{2} mv^2\)

\(\displaystyle KE \Rightarrow \sf kinetic \ energy \ (J)\)

\(\displaystyle m \Rightarrow \sf mass \ (kg)\)

\(\displaystyle v \Rightarrow \sf velocity \ (m/s)\)

A wave's period is the amount of time it takes for two crests to pass one wavelength apart at a certain location.

The formula for wave period is wavelength divided by velocity since the periods indicate that a wave's period is the inverse of its frequency. The frequency of a wave is measured in 1/s, often known as Hertz, whereas the period of a wave is measured in seconds (s) (Hz).

Each wave, period is typically expressed in seconds. Speed (V) divided by wavelength (V) yields the period (T) (S). Divide the length by the speed, for instance, 12 m divided by 6 m/s = 2 s to determine the period of a wave with a speed of 6 m/s and a wavelength of 12 m.

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Answer:

The power of the kettle is P = 1 watt.

Explanation:

The definition of power is:

Power equals the quotient between work and time, or:

P = w/t.

In this case, we know that the work is:

w = 1J

And the time is:

t = 1 s

Then the power will be:

P = 1J/1s = 1 J/s

Also knowing that:

1 J/s = 1 W

(w is the unit for Watt)

We can conclude that the power of the kettle is:

P = 1 W

The given statement "the greatest shear stress to the acl occurs in 60° to 90° flexion in an open kinetic chain exercise." is TRUE. The greatest shear stress to the anterior cruciate ligament (ACL) occurs in the range of 60° to 90° flexion during open kinetic chain exercises.

This is because at this angle, the forces acting on the knee joint are most likely to produce shear stress on the ACL, which is the primary restraint to anterior tibial translation. Closed kinetic chain exercises, on the other hand, are thought to produce less shear stress on the ACL as the foot is in contact with the ground and the forces are distributed more evenly across the joint.

It is important for individuals recovering from ACL injury or surgery to be aware of these factors and modify their exercises accordingly to prevent re-injury or further damage to the ligament.

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Answer:

Increase the amount of gas

Explanation:

By increasing the pressure of the solution, the amount of gas will have to increase. Solubility of gases increases as the pressure is made to increase. Before the pressure was increased, the gases moved freely about. But as it was increased, theses gases had more frequent collisions within this solution. Causing an increase. The liquid on its own will experience no changes.

Answer:

Increase the amount of gas

Explanation:

The angle at which light inside crown glass is completely polarized when reflected from water is approximately 50.5 degrees.

When light is reflected from a surface at a certain angle, it becomes partially polarized. The angle at which the reflected light becomes completely polarized is called the Brewster's angle and is given by:

tan θ_B = n2/n1

where θ_B is the Brewster's angle, n1 is the refractive index of the medium from which the light is incident (in this case, water) and n2 is the refractive index of the medium in which the light is reflected (in this case, crown glass).

Substituting the values given:

tan θ_B = 1.52/1.333

tan θ_B ≈ 1.14

Taking the inverse tangent of both sides:

θ_B ≈ 50.5 degrees

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Answer:

D:Introspection

Explanation:

Answer:

D

Explanation:

took the test got it right

Answer: Magnitude of acceleration: 937.5 cm/s^2

Explanation:

To find the magnitude of acceleration at a given displacement in simple harmonic motion, we can use the equation:

a = -ω²x

Where:

a is the acceleration,

ω (omega) is the angular frequency, and

x is the displacement from the equilibrium position.

In this case, we are given the amplitude (A) and the maximum acceleration (a_max). The maximum acceleration is equal to ω²A, so we can rearrange the equation to find ω:

ω = √(a_max / A)

Substituting the given values:

a_max = 100 cm/s²

A = 8.0 cm

ω = √(100 cm/s² / 8.0 cm) = √12.5 rad/s

Now we can find the magnitude of acceleration at a displacement of 6.0 cm:

x = 6.0 cm

a = -ω²x = -(12.5 rad/s)² * (6.0 cm) ≈ -937.5 cm/s²

Therefore, the magnitude of the acceleration at a displacement of 6.0 cm is approximately 937.5 cm/s².

Answer:

true

Explanation:

the explanation is we would have been roasted if they weren't to weak

Answer:

The pressure difference required between the two ends of the 1.6 km pipe section, with a diameter of 29 cm, to transport the oil at a rate of 650 cm^3/s, is approximately 0.398 Pa.

Explanation:

To calculate the pressure difference between the two ends of a pipe, we can use the Poiseuille's Law equation, which relates flow rate, viscosity, pipe length, diameter, and pressure difference.

The formula is as follows: ΔP = (8 * n * L * Q) / (π * r^4)

Where:

ΔP is the pressure difference,

n is the viscosity of the fluid,

L is the length of the pipe section,

Q is the flow rate,

and r is the radius of the pipe (half of the diameter).

Given:

L = 1.6 km = 1600 m (convert to meters)

Diameter = 29 cm

Radius (r) = 29 cm / 2 = 14.5 cm = 0.145 m (convert to meters)

Q = 650 cm^3/s = 650 * 10^-6 m^3/s (convert to cubic meters per second)

n = 0.20 Pa.s (viscosity)

p = 950 kg/m^3 (density)

ΔP = (8 * 0.20 * 1600 * 650 * 10^-6) / (π * (0.145)^4)

ΔP ≈ 0.398 Pa

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