use the electromagnetic spectrum above to answer the following questions. note that the numbers above the visible spectrum indicate the wavelength in nanometers. yellow light has a wavelength of about 590 nanometers. what is its frequency? unit a certain light has a frequency of 4.3*10^14 hz. what is its wavelength in meters? m what color would this be? select an answer

Answer:

0.25

Explanation:

Answer:

v = 2.85 m/s

Explanation:

Given that,

A skipper on a boat notices wave crests passing his anchor chain every 5.6 s.

The distance between wave crests to be 16 m.

We need to find the speed of the waves. The speed of a wave can be calculated by the formula as follows :

\(v=f\lambda\\\\v=\dfrac{\lambda}{T}\\\\v=\dfrac{16}{5.6}\\\\v=2.85\ m/s\)

So, the speed of the wave is 2.85 m/s.

Option W demonstrates the transmission of sound because in this option sound can be heard.

Sound is transmitted through gases, solids and liquids as longitudinal waves which is also called compression waves. Such type of wave requires a medium to propagate. Through solids, it can be transmitted as both longitudinal waves as well as transverse waves.

So we can conclude that Option W demonstrates the transmission of sound because in this option sound can be heard.

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Answer:

bounces off the mirror at the same angle it hits the solid surface.

Explanation:

According to the Law of Reflection, a light ray strikes a mirror at the point of incidence bounces off the mirror at the same angle it hits the solid surface.

The incident ray and the reflected ray lie in the same plane

The angle of incidence is equal to the angle of reflection as a ray of light reflects off a solid surface.

So,

correct answer is ''bounces off the mirror at the same angle it hits the solid surface.''

The kinematics and Newton's second law allow us to find the height from which the block system descends is:

             y = 6.54 m

Given parameters

To find

Newton's second law gives a relationship between the net force, the mass, and the acceleration of the body.

      ∑ F = m a

Where the bold letters indicate vectors, F is the force, m the mass and the acceleration of the body.

Kinematics studies the movement of bodies, looking for relationships between position, velocity and acceleration

              y = v₀ t + ½ a t²

In the attached we have a free body diagram of the system, let's write Newton's second law.

          T - W₁ = m₁ a

         -T + W₂ = m₂ a

Let's solve the system of equations.

          W₂ - W₁ = (m₁ + m₂) a

          a = \(\frac{m_2-m_1}{m_2+m_1} \ g\)

Let's calculate

          a = \(\frac{2 -4}{ 2 +4} \ 9.8\)  

          a = -3.27 m / s²

The negative sign indicates that the heaviest body is descending.

Now we can use kinematics to find the height, as the system comes out of rest the initial velocity is zero, when he reaches the ground his height is zero.

             y = y₀ + v₀ t + ½ a t²

             0= y₀ + 0  +½ a t²          

Let's calculate

             y₀ = ½ 3.27 2²

             y = 6.54 m

In conclusion, using kinematics and Newton's second law we can find the height from which the block system descends is:

             y = 6.54 m

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Answer:

you are very most correct

Explanation:

it does have something to do with terminal velocity and because the weight is so light of it any tiny gust of wind can push it back and forth and because wind is never stable thats why it moves side to side

Answer:

c. 0.71 [s]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f} =v_{o} -g*t\)

where:

Vf = final velocity = 0 (because when the ball reaches the top, there is no movement)

Vo = initial velocity = 7 [m/s]

g = gravity acceleration = 9.81 [m/s²]

t = time [s]

Note: The negative sign of the equation means that the movement is againts the direction of the gravity acceleration.

\(0 = 7 - (9.81*t)\\t = 0.713 [s]\)

Answer:

The plastic is too much like other things that are allowed. Sometimes it is too thin, as well. Or sometimes the gates are just not that modern and advanced enough to detect them.

c. The tissue has a negative charge, and the balloon has a positive charge.

Due to the opposing charges of both things, the tissue paper repels the balloon. In this instance, it is likely that the balloon has a positive charge whereas the tissue paper has a negative charge. While like charges repel one another, opposite charges attract.

The fact that the balloon is repelled by the tissue paper leads us to conclude that both items have opposing charges. The tissue paper has a negative charge, but the balloon is most likely to have a positive charge.

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The crew aboard a small sailboat should be briefed to follow specific instructions when their boat is being towed.

When a small sailboat is being towed, the crew should adhere to the following instructions:

Secure all loose items: The crew should secure any loose items on the boat to prevent them from shifting or falling overboard during the towing process. This includes stowing equipment, sails, and personal belongings in appropriate storage spaces.

Maintain communication: The crew should establish clear communication with the towing vessel to ensure a smooth towing operation. They should follow the instructions given by the towing crew and relay any concerns or issues promptly.

Stay alert and ready to assist: While being towed, the crew should remain vigilant and ready to assist if needed. They should be prepared to help with maneuvers, follow the towing vessel's directions, and be mindful of potential hazards in the water.

By following these guidelines, the crew of a small sailboat can contribute to a safe and successful towing operation, minimizing risks and ensuring a smooth journey.

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Answer:

v = a t = 4 m/s^2 * 5 s = 20 m/s

It can increase its speed by 20 m/s

Using V = V0 + a t

V0 (initial speed) had to be 12 m/s

Answer:

its false

Explanation:

because Longitudinal waves are in which particles of the medium move directio ni. parallel to the energy transport.

I think this is ur answer

Consider the situation where a person that has a mass of 68 kg is descending in an elevator at a constant velocity of 4.0 m/s. At some time "t", the elevator starts to slow to a stop at the rate of 2.0 m/s². then force along the elevator is 136 N.

Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s². There are two types of forces, balanced force and unbalanced force. Balanced forces are those forces which are opposite in direction and equal in magnitude. When Net force acting on a body is zero then we call it as balanced force. Balanced force is not responsible for the motion of the body. ex. when two persons pulling rope on both end with equal magnitude which cause them to be balanced force have 0 net force.

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The statement is wrong and the correct average speed of the student will be 3/2 or 1.5 miles per hour.

Given in the question,

The student climbs the mountain at a speed of 1 mile per hour, then the distance traveled by the student uphill is given by

Distance = Speed × Time,

Put in the values, we get

Distance = 2 × 1 = 2 miles

So the student travels 2 miles uphill and turns around and climbs back at 3 miles per hour.

So the time taken by the student to climb back is given by

Time = Distance/Speed

Time = 2/3 hr

So Now

Total distance traveled by the student = Uphill climb  +  Downhill Climb

Total distance traveled by the student = 2 + 2

Total distance traveled by the student = 4 miles

Total time taken = Time to climb uphill +  time to climb downhill

Total time taken = 2 +  2/3 hr

Total time taken = 8/3 hr

Now average speed is given by the formula,

Average Speed  =  Total Distance traveled/Total Time taken

Average Speed  = 4 / (8/3)

Average Speed  = (4 × 3) / 8

Average Speed  = 12 / 8

Average Speed  = 3/2 miles per hour

Therefore, the statement that the average speed will be 3 miles per hour is wrong and the correct average speed of the student will be 3/2 or 1.5 miles per hour.

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Answer:

An engine made of heat!

Okay actual answer, A heat engine is a mechanical energy converter that transforms heat or thermal energy to mechanical energy.

Answer: The force exerted on an object is the mass of an object times the acceleration of the object: F = ma, where m is the mass in kg, and F is in kg m/s2 = Newton. Work is the force exerted on an object times the distance over which the force is exerted: W = Fx, where W is the work in Nm = Joule.

Brainliest pleaseee if it helped you out!

v=u+at

v=0+8.0×30

v=240

To determine the vector forces and moment in the given scenario, we'll use vector addition and moment calculation.

(a) Vector force T_AB: The force T_AB is given as 555 N. Since it acts from A to B, its direction is AB. Therefore, T_AB can be represented as: T_AB = 555 N in the direction AB. (b) Vector force T_BC: The force T_BC is given as 660 N. Since it acts from B to C, its direction is BC. Therefore, T_BC can be represented as: T_BC = 660 N in the direction BC. (c) Resultant vector force R: To find the resultant vector force R, we need to add the vector forces T_AB and T_BC. Since they act along different lines of action, we can add them as vectors: R = T_AB + T_BC. To find the magnitude and direction of R, we can use the parallelogram rule or the triangle rule of vector addition. (d) Moment about O: The moment of the resultant force R about point O can be calculated using the cross product between the position vector r_BC and the force vector R. The moment is given by the equation: Moment = r_BC × R. Here, r_BC is the position vector from point B to point C. Since the distance between B and C is not provided in the question, it's necessary to know the specific position or distance to calculate the moment accurately.

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Answer:

I = 30 A.

Explanation:

Given that,

The voltage of the battery, V = 230 V

Power used to charge the battery, P = 6.9 kW

We need to find the current used to charge the battery. The formula for the power is given by :

P = VI

Where

I is current

So,

\(I=\dfrac{P}{V}\\\\I=\dfrac{6.9\times 10^3}{230}\\\\=30\ A\)

So, the required current is 30 A.

Answer:

Explanation:

Sound, seismic, and electromagnetic waves transmit energy through different mediums due to the motion of particles in the medium.

Sound waves transmit energy through the vibration of particles in a solid, liquid, or gas. The energy is transferred from particle to particle as the wave travels through the medium.

Seismic waves are created by the sudden release of energy from earthquakes, volcanic eruptions, or other geological events. These waves travel through the Earth's solid mantle and crust, transmitting energy through the vibration of particles in the rock.

Electromagnetic waves are a type of wave that does not require a medium to travel through. They are created by the motion of charged particles, such as electrons, and can travel through a vacuum, such as space. Electromagnetic waves transfer energy through the oscillation of electric and magnetic fields.

To calculate the force exerted on a wire carrying current in a magnetic field, you can use the formula:

F = I * L * B * sin(theta)

F is the force exerted on the wire (in Newtons),

I is the current flowing through the wire (in Amperes),

L is the length of the wire (in meters),

B is the magnetic field strength (in Tesla),

theta is the angle between the wire and the magnetic field (in degrees).

I = 5.3 A

L = 1.8 m

B = 0.62 T

theta = 45 degrees

F = 5.3 A * 1.8 m * 0.62 T * sin(45 degrees)

Using sin(45 degrees) = √2 / 2, we can simplify the equation:

F = 5.3 A * 1.8 m * 0.62 T * (√2 / 2)

F ≈ 5.3 * 1.8 * 0.62 * (√2 / 2)

F ≈ 9.0742 N

Therefore, the force exerted on the 1.8-meter length of wire is approximately 9.0742 Newtons.

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Answer:

3.766 kg or 3.7 kg

Explanation:

F= M*A equation

Answer: They Are all gas giants.

Explanation:

Required power  to lift a 12N box at 4.5m/s be 54 Watts. Option (D) is correct.

Power can be defined as the amount of work completed in a given amount of time. Watt (W), which is derived from joules per second (J/s), is the SI unit of power.

Horsepower (hp), which is roughly equivalent to 745.7 watts, is a unit of measurement sometimes used to describe the power of motor vehicles and other devices.

Mathematically,

Power = work done/time = { required force × distance}/time

= required force  × {distance/time}

= required force × velocity.

Given that:

Weight of the box = 12 N.

Speed of the box = 4.5 m/s.

Hence, required power = weight of the box × Speed of the box

= 12 N ×  4.5 m/s.

= 54 Watts.

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The carbon-14 can be used to date the hammer suspected to be used in 3400 BC.

Half life is the time taken for a radioactive element to decay to half of its original value.

Thus, we can conclude that the carbon-14 can be used to date the hammer suspected to be used in 3400 BC.

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