I'm imagining a scene in a future Pirates of the Carribean movie. The Black Pearl tried to surf a wave to get over a sandbar and didn't quite make it. The stern (back end) of the ship is stuck on the sand bar and is a sitting duck for the Royal Navy ships following her. The Black Pearl has 2 cannons pointed forward (bowchasers) and 3 cannon pointing backward (sternchasers). Which cannons should Captain Jack Sparrow fire to move his ship forward off the sand bar?


To the left (port)



To the right (starboard)



To the back (the sternchasers)



To the front (the bowchasers)

There is no need for tangential acceleration when moving in a circle at a constant speed.

centripetal acceleration refers to the speed at which a body moves through a circle. Due to the fact that velocity is a vector quantity (i.e., it has both a magnitude, the speed, and a direction), when a body travels in a circle, its direction is constantly changing, which causes a change in velocity, which results in an acceleration.

Centripetal acceleration occurs when you spin a ball on a string above your head. A car experiences centripetal acceleration when it is being driven in a circle. Additionally, a satellite in orbit around the Earth experiences centripetal acceleration.

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The ray does not bend when it enters the semi circular glass block - Light ray incident on semicircular block at 90 degrees, therefore there is no change in the direction of ray at P.

Electromagnetic radiation that falls within the region of the electromagnetic spectrum that the human eye can see is known as light or visible light.

Light is electromagnetic radiation that the human eye can perceive. From radio waves with wavelengths measured in meters to gamma rays with wavelengths shorter than around 1 1011 meters, electromagnetic radiation occurs throughout an incredibly broad range of wavelengths.

Light governs our sleep-wake cycle and is crucial to our health and wellbeing. In actuality, "light" that is visible is a type of radiation, which is just energy that moves in the form of electromagnetic waves. It can alternatively be explained as a flow of "wave-packets," or particles, known as photons.

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Answer:

In a material, the magnetic behavior depends on the alignment of magnetic moments of the atoms. Magnetic moments are generated by the motion of the electrons in the atoms. When the magnetic moments of atoms in a material are aligned in a specific pattern, it creates a magnetic field which results in the material being magnetic.

In many materials, the magnetic behavior arises due to the alignment of magnetic domains, which are regions of atoms with magnetic moments aligned in the same direction. When many domains with aligned magnetic moments are present in a material, the material becomes magnetic.

The magnetic behavior of a material depends on the number of electrons and the arrangement of those electrons in the atoms. In particular, for an atom to have a magnetic moment, it must have unpaired electrons, meaning electrons that are not paired with another electron with the opposite spin. When these unpaired electrons in the atoms are aligned, they generate a magnetic moment. If all electrons are paired, there will not be a net magnetic moment, so the material will not be magnetic.

So, in summary, the magnetic behavior of a material is determined by the alignment of magnetic moments of atoms. When the magnetic moments of many atoms in a material align in the same direction, it creates a magnetic field, leading to a material being magnetic. This alignment is usually present in magnetic domains consisting of atoms with unpaired electrons.

Around 21.49% of the engine power, or 21.5% rounded to two significant figures, is being used to propel the aircraft upward.

There is always a change in the kinetic energy of an object when a net force acts on it. This happens as a result of the object experiencing an acceleration, which changes its velocity. As a result, we arrive at the work-energy theorem. The work-energy theorem is applicable to forces that are both constant and variable.

Power = (mass) x (gravity) x (vertical speed)

where the mass is 700 kg, gravity is 9.81 m/s², and the vertical speed is 2.5 m/s.

Power = (700 kg) x (9.81 m/s²) x (2.5 m/s)

Power = 17,192.5 W

To find the fraction of the engine power that is being used to make the airplane climb, we need to divide the power used for climbing by the total engine power, which is 80,000 W:

Fraction of engine power = (Power for climbing / Total engine power) x 100%

Fraction of engine power = (17,192.5 W / 80,000 W) x 100%

Fraction of engine power = 21.49%

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Answer:

Magnetism is the force exerted by magnets when they attract or repel each other

hope it helps you:)

Answer:

a circular path

Explanation:

In a magnetism field if a charged particle having a charge of magnitude '' enters  such that its velocity vector V is 90° to the direction of the magnetic field "B'', then it will experience a force, called Lorentz force F

\(F = V\times B\)

According to the property of cross-product, the Lorentz force (F) acting on the particle will be perpendicular to the instantaneous position of the particle, making the path of the particle to be a circular path.

Answer:

Tension

Explanation:

Answer:

U = 41.65 J

Explanation:

We have just to calculate it with the following expression of gravitational potential energy:

U = m*g*h

Where:

m: mass

g: gravity acceleration;

h: height.

So:

U = m * 9.8 * 0.85

U = 8.33 * m

Then, it is just putting the mass value of the dog in that equation to obtain the value of potential energy acquired by the dog when jumping.

The mass of this kind of dog is between 3.6kg - 5kg, so, the maximum value of the potential energy can be like this:

U = 5 * 9.8 * 0.85

U = 41.65 J

Answer:

  6.4 V

Explanation:

You have a series circuit of three resistors and a 24 V power supply. You want to know the voltage across the 40 Ω resistor, when the other two resistors are 100 Ω and 10 Ω.

The fraction of total voltage in a series circuit that is dropped across any resistor is the ratio of that resistor value to the total resistance in the circuit. The voltage drop across a 40 Ω resistor in a circuit with a total resistance of 150 Ω is ...

  (24 V)(40/150) = 32/5 V = 6.4 V

Answer: if it is in inches than it is 21.844 cm

Explanation:

Answer:

search on the app

Explanation:

downloaded it for a reason

Hi there!

a)
Since the objects are made of material of a constant area/mass density, we can simplify the process.

To calculate the value of the y-coordinate for the center of mass, we can begin by finding the y-coordinates for the center of masses for both rectangles.

Also, let the small rectangle be 'Rectangle 1', and the bigger rectangle 'Rectangle 2'.

Smaller rectangle:

Since D = 9 cm and B = 32 cm, the remaining width of the small rectangle is  equal to B - D = 32 - 9 = 23 cm. The midpoint of this width is:
\(w_{1m} = \frac{23}{2} = 11.5 cm\)

Now, the height of this rectangle is 10 cm. The midpoint of this height is 10/2 = 5 cm. However, this is not the actual y-coordinate. Since the height of the block below is 5 cm, we must add the two because this rectangle is on top of the other.

\(h_{1m}= 5 + 5 = 10 cm\)

Larger rectangle:
We can simply take the midpoints of its dimensions to solve for its center of mass.

\(w_{2m} = \frac{B}{2} = \frac{32}{2} = 16 cm\)

\(h_{2m} = \frac{A-C}{2} = \frac{15-10}{2} = 2.5 cm\)

Now, take the averages of the coordinates for both rectangles to solve.

y-coordinate:
\(y_{cm} = \frac{10 + 2.5}{2} = \frac{12.5}{2} = \boxed{6.25 cm}\)

x-coordinate:
\(x_{cm} = \frac{11.5 + 16}{2} = \frac{27.5}{2} = \boxed{13.75 cm}\)

Answer:

chris i guess

Explanation:

Answer:

Chris

Explanation:

He told Techno to stop being so loud that one time...

It takes approximately 9.05 seconds to roll the drum a distance of 36 meters.

We can use the formula for the circumference of a circle:

Circumference = 2 * π * radius

Given:

Radius (r) = 0.40 m

Circumference (C) = 2 * π * 0.40 m

We must figure out how many full rotations the drum makes to go 36 meters in order to calculate how long it takes to roll the drum. Since we are aware of the circumference, we can determine the number of full turns as follows:

Number of turns = Distance / Circumference

Given:

Distance = 36 m

Number of turns = 36 m / (2 * π * 0.40 m)

Now that we know how many turns there are, we can calculate the time by multiplying that number by the length of a turn, which is given as 8.0 seconds:

Time = Number of turns * Time per turn

Time = (36 m / (2 * π * 0.40 m)) * 8.0 s

By substituting the values into the equation, we can calculate the time:

Time = (36 / (2 * 3.14159 * 0.40)) * 8.0 s

Time ≈ 9.05 s

So, it takes approximately 9.05 seconds to roll the drum a distance of 36 meters.

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Answer:

Explanation:

que paso cuz

Answer:

F=w=ma                                                                                                                                                       OR by using equations of motions                                                                               vf=vi-at                    : a=vf-vi/t                                                              eq 1                         s=vit+1/2at squre                                                                                 eq 2                     2as=vf squre - vi squre                                                                        eq 3                                                                                                                                                                                  

Explanation:

where m is the mass of falling body , f is the weight is the force acting down ward , vf is the final velocity, vi is the inetial velocity , t is the time and s is the distance covered by a body.

Answer:

Interference

Explanation:

When two traveling waves traveling waves along the same path are superimposed(combine). The superimposition of these two waves results in the production of a resultant wave which is defined by the net effect of the two waves. Wave interference occurs most types of waves including radio wave, light, acoustic waves and other wave types. Alternating sound between loud and Zero is heard as the two speakers emit identical pure tones because the resultant amplitude after the interference of the two sound waves is the vector sum of each of their amplitudes. A loud sound is heard, when the crest of both waves meets each other and a zero is heard if the crest of one meets the trough of the other as they cancel out.

The Sun is expected to shine for about another 12 billion years before it exhausts its fuel and eventually becomes a white dwarf.

The sun is currently in the middle of its main sequence phase, where it is fusing hydrogen into helium in its core. It is estimated that the sun has about 5 billion years left before it exhausts its core hydrogen fuel and begins to evolve off the main sequence.

After the main sequence phase, the sun will enter a new phase where it will expand into a red giant, swallowing up mercury, venus, and likely earth before it eventually becomes a white dwarf star.

The entire process of the sun's evolution off the main sequence and into a white dwarf is estimated to take another 7 billion years.

total =  5 + 7 = 12 billion years

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Answer:

a spring scale

Explanation:

i think it is correct

Answer:

What is the difference between the crust and lithosphere? The crust (whether continental or oceanic) is the thin layer of distinctive chemical composition overlying the ultramafic upper mantle. ... The lithosphere is the rigid outer layer of the Earth required by plate tectonic theory.

Explanation:

Hope this helps!

Answer:

a thin layer

Explanation:because

The crust (whether continental or oceanic) is the thin layer of distinctive chemical composition overlying the ultramafic upper mantle. ... The lithosphere is the rigid outer layer of the Earth required by plate tectonic theory.

Answer:

C; Rowing a boat

Explanation:

Hope this helps!      :3

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In order to calculate the force required, we can use the formula below:

Using F1 = 16000, A1 = 4*10^-1, F2 = F and A2 = 4*10^-4, we have:

Therefore the correct option is h.

Answer:

Machine B

Explanation:

Efficiency of Machine A = \(\dfrac{250}{800} = 0.3125\)

Efficiency of Machine B = \(\dfrac{500}{1200} = 0.4167\)

Hence machine B is more efficient

Hopefully this answer helped you!!

Answer:

Tissue: cardiac muscle

Organ: Heart

Organ System: Human Body, Circulatory System

Explanation:

The cardiac muscle makes up an organ, making it a tissue

The Heart makes up a organ system, making it an organ

Both the human Body and The Circulatory System make up an organism, making them organisms

The magnitude of the initial acceleration of the object is 4.2 m/s².

The tension in the string once the object starts moving is 13.65 N.

The magnitude of the initial acceleration of the object is calculated by applying Newton's second law of motion as follows;

F(net) = ma

m₂g - μm₁g cosθ = a(m₁ + m₂)

where;

(4.75 x 9.8) - (0.535 x 3.25 x 9.8 x cos40) = a(3.25 + 4.75)

33.5 = 8a

a = 33.5/8

a = 4.2 m/s²

The tension in the string once the object starts moving is calculated as;

T = m₁a

T = 3.25 x 4.2

T = 13.65 N

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Answer:

1962

Explanation:

w = f × d

= 20×9.81 × 10

= 1962

Answer:

Newton's theory identified mass as the factor that causes gravity. On the other hand, Einstein's theory identified the curvature of space-time as the factor that causes gravity.

Answer:

Hey mate...

Explanation:

This is ur answer....

In the 17th century Newton concluded that objects fall because they are pulled by Earth's gravity. Einstein's interpretation was that these objects do not fall. According to Einstein, these objects and Earth just freely move in a curved spacetime and this curvature is induced by mass and energy of these objects.

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The number of pool noodles that  would be needed to support the weight is 20.

The volume of a single pool noodle is calculated as follows;

V = πr²h

V = π (0.025)² x 1.65

V = 0.00324 m³

The weight of the water displaced is calculated as follows;

W = ρVg

where;

W = 1000 x 0.00324 x 9.8

W = 31.75 N

The number of pool noodles needed to support a person is calculated as follows;

= (65 x 9.8 ) / (31.75)

= 20

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Answer:

C. 4736J

Explanation:

The mechanical energy of ball is the sum of its kinetic energy and potential energy at any point;

 Mechanical energy  = kinetic energy + potential energy

Given:

kinetic energy  = 2000J

potential energy  = 2376J

So;

 Mechanical energy  = 2000J + 2376J  = 4736J