PLEASE SOMEONE HELP ME, THIS is my last assignment PLEASEE ill give brainliest please help

A heavy rock will encounters the greatest amount of air resistance than the light rock due to its mass. Thus, the correct option is B.

Air resistance is a force which is caused by the air. The force which acts in the opposite direction to an object that is moving through the air. A car with a flat front will experience high air resistance while a sports car with a streamlined shape will experience lower air resistance, allowing the car with low air resistance to go faster.

Air resistance happens when an object moves through the direction of air. Depending on the velocity, shape, and area of the object, the resistance differs. The faster an object moves in the direction and the greater its area, the higher will be the air resistance gets.

Therefore, the correct option is B.

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Answer:

420000N

Explanation:

Given parameters:

Mass of the train  = 5.6 x 10⁵kg

Acceleration  = 0.75m/s²

Unknown:

Resultant force = ?

Solution:

According to newton's second law, force is the product of mass and acceleration;

   Force  = mass x acceleration

Resultant force that acts on the train is given below;

 Force  = 5.6 x 10⁵kg  x 0.75m/s²  = 420000N

Answer:

Light is electromagnetic radiation that has properties of waves. The electromagnetic spectrum can be divided into several bands based on the wavelength. As we have discussed before, visible light represents a narrow group of wavelengths between about 380 nm and 730 nm.

OR

The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization, while its speed in a vacuum, 299 792 458 m/s, is one of the fundamental constants of nature.

Answer:

the correct answer is D

Explanation:

Answer:

option d is your answer

Explanation:

you can find the complete solution in the given attachment

I hope it helped you

Answer: The thickness of the vertical flow lines indicates the relative quantity.

The thickness of the vertical flow lines indicates the relative quantity.

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Answer:

I can give you a list of noncontact forces off of my head, if that is what you need.

Explanation:

First, gravity. It acts everywhere and pulls down every object that is in the air towards the ground, unless they have an equal and opposite force that counters it.

Second, wind. I don't think this will count because wind is a physical thing, but it can be used in the same way as we did with gravity. If the force counteracting it is larger, equal, and opposite of the force it is countering, then it will move forward, through the wind.

Streams of protons and electrons emitted from the Sun produce the solar wind. The Sun continuously emits a stream of charged particles, mainly protons and electrons, known as the solar wind.

These particles are accelerated by the Sun's intense heat and magnetic field. As they travel through space, the solar wind interacts with planetary magnetic fields and the Earth's magnetosphere, causing various effects such as auroras and geomagnetic storms. The solar wind also carries energy and plays a crucial role in shaping the space environment within our solar system. It has implications for space weather and can impact satellites, spacecraft, and other technological systems.

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The time for the current iteration is up and one of the features isn't complete. Stop Working And Add The Incomplete Feature Back Into The Backlog.

In case a task couldn't be completed within the new launch, it's far great to feature it in the backlog so that in the next iterations it'll probably be finished giving it a priority, of direction. The current iteration, it isn't convenient to extend the new release time simply to complete the unfinished challenge. additionally, we ought to now not add it at once to the following new launch due to the fact we would be changing its shape. So the maximum appropriate thing to do is to depart it marked as a problem to be blanketed within the next iterations.

The movement or a system of iterating or repeating includes A technique wherein repetition of a series of operations yields consequences successively towards the desired end result.

The community becomes skilled by way of processing the current iteration of the entire training set. the lighting turned into also the issue of a computer simulation look at, with 5 iterations undertaken earlier than the final configuration of rooflight was determined.

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Answer:

/////////////////////////////////////////////////

Explanation:

All living organisms are mainly composed of the elements: Oxygen, Carbon, Hydrogen, Nitrogen, Phosphorus.

The correct answer choice is option c.

Living organisms are those things that has life. They include plants and animals. Living organisms be it plants or animals are composed of important elements such as carbon, oxygen and others.

However, there are certain characteristic features which living organisms possess. Some of these characteristics of living things are as follows:

Other characteristics of living organisms are:

In conclusion, we can now confirm from above the explanation given above that living things are made up of certain elements.

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Answer:

Tension.

tension is the name of force that opposes or goes opposite of gravity

Hope this helps!

Answer: Friction

Explanation: Friction opposes gravity and any motion in two surfaces.

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The energy transferred as heat for a reversible isothermal expansion of an ideal gas at 132∘ C is 18,630 J.

We can use the relationship between heat, temperature, and entropy for an ideal gas undergoing a reversible process:

ΔS = Qrev/T

where ΔS is the change in entropy, Qrev is the heat transferred in a reversible process, and T is the temperature in Kelvin.

We can rearrange this equation to solve for Qrev:

Qrev = ΔS x T

Now we can plug in the given values:

ΔS = 46.0 J/K (given)

T = 132 + 273 = 405 K (since the temperature is given in Celsius, we add 273 to convert to Kelvin)

Qrev = 46.0 J/K x 405 K

Qrev = 18,630 J

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Answer:

MRI and Radio telescopes

MRI and radio telescopes would be unaffected by satellites that are not working properly.

The longest wavelengths in the electromagnetic spectrum are found in radio waves, which typically have frequencies of 300 gigahertz (GHz) and lower. The wavelength for 300 GHz is 1 mm, which is shorter than a grain of rice, while the wavelength for 30 Hz is 10,000 km (6,200 miles) (longer than the radius of the Earth).

Radio waves move at the speed of light in a vacuum, as do all electromagnetic waves, and at a nearly identical speed in the Earth's atmosphere.

Among the given options, space communication and television broadcasting television broadcasting and GPS  and  radio telescopes and space communication​ are affected by satellites that are not working properly because they are operated by satellite technology.

Hence, only MRI and radio telescopes would be unaffected by satellites that are not working properly.

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The vector's magnitude is 5.4m/s²and direction is 56.30°.

We will talk about vectors and scalars in this section. Quantities called vectors have both a magnitude and a direction. The indication of a vehicle's motion serves as a practical example of a vector.

Given,

ax = 3.0 m/s², ay = -4.5 m/s²

a = \(\sqrt{a^{2} _{x} + a^{2} _{y} }\)

a = \(\sqrt{3^{2} +-4.5^{2} }\)

a = \(\sqrt{9+20.25}\)

a = \(\sqrt{29.25}\)

a = 5.4m/s².

A vector's direction can be established by

α = tan⁻¹ y/x

α = tan⁻¹-4.5 / 3.0

α = tan⁻¹(1.5)

α = 56.30°.

The angle that the vector makes with the horizontal axis, or the X-axis, determines the vector's direction. By counterclockwise rotating the vector's angle at its tail toward the east, one can determine the vector's direction.

The vector's direction is therefore 23.375° away from the X-axis, i.e., the vector Ax = 26 m/s², Ay = 10 m/s² points in the direction of the North-East.

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The wavelength of the photon of light produced by a surgical laser is approximately 656 nm.

To calculate the wavelength of a photon, you can use the equation:

E = h * c / λ

Where E is the energy of the photon (3.027 x 10⁻¹⁹ J), h is the Planck's constant (6.626 x 10⁻³⁴ Js), c is the speed of light (3.0 x 10⁸ m/s), and λ is the wavelength.

First, rearrange the equation to solve for λ:

λ = h * c / E

Now, plug in the given values:

λ = (6.626 x 10⁻³⁴ Js) * (3.0 x 10⁸ m/s) / (3.027 x 10⁻¹⁹ J)

λ ≈ 6.56 x 10⁻⁷ m

To convert the wavelength to nanometers (nm), multiply by 10⁹:

λ ≈ 6.56 x 10⁻⁷ m * 10⁹nm/m

λ ≈ 656 nm

So, the wavelength of the photon is approximately 656 nm.

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The frequency of a wave with a wavelength of 0.39 m and a speed of 86 m/s can be calculated using the formula: frequency = speed / wavelength. Substituting the given values into the formula, we find that the frequency of the wave is approximately 220.51 Hz.

The frequency of a wave refers to the number of complete cycles or oscillations it undergoes per second. It is measured in hertz (Hz). To calculate the frequency of a wave, we need to use the formula: frequency = speed / wavelength.

Given values:

Wavelength (λ) = 0.39 m

Speed (v) = 86 m/s

Using the formula: frequency = speed / wavelength

frequency = 86 m/s / 0.39 m

Dividing the speed (86 m/s) by the wavelength (0.39 m), we find:

frequency ≈ 220.51 Hz

Therefore, the frequency of the wave with a wavelength of 0.39 m and a speed of 86 m/s is approximately 220.51 Hz.

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Answer:

12.01

Explanation:

Given parameters:

Abundance of C-12  = 98.89%

mass of isotope  = 12amu

Abundance of C - 12  = 1.11%

mass of isotope  = 13.003

Unknown:

Average atomic mass of carbon  = ?

Solution:

The average atomic mass ;

R.A.M  = (mass of isotope x abundance of isotope)-12 + (mass of isotope x abundance of isotope)- 13

Insert the parameters and solve;

R.A.M  =( 12  x 98.89%)  + (1.11% x 13.003)

 R.A.M = 11.87 + 0.14 = 12.01

The statement "When using a digital multimeter (DMM) as an ohmmeter, the circuit should always be disconnected from any energy source, such as a battery, to ensure accurate and safe measurements." is false.

What is an ohmmeter?

An ohmmeter is an electrical device used to measure resistance in an electrical circuit. It is important to note that when using a digital multimeter (DMM) as an ohmmeter, the circuit should NOT be complete (connected to a battery or other energy source). An ohmmeter generates its voltage and current, and therefore it should not be used in a circuit that is already powered. Doing so could potentially damage the ohmmeter or the circuit being measured.

How to measure resistance with a DMM?

To measure resistance with a DMM, the component being measured must be disconnected from the circuit, and the leads of the DMM must be connected to the component to measure its resistance. The circuit should not be powered or complete when measuring resistance with an ohmmeter.

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The Bicyclist's Acceleration is 2.7 m/s2. Thus, Option C is the answer

The bicyclist's acceleration can be found using the equation:

acceleration = (final velocity - initial velocity) / time

In this case, the final velocity is 12.15 m/s, the initial velocity is 0 m/s (since the bicyclist starts from rest), and the time is 4.5 seconds. Plugging these values into the equation, we get:

acceleration = (12.15 m/s - 0 m/s) / 4.5 seconds

acceleration = 2.69 m/s2

Therefore, The correct answer is c. 2.7 m/s2

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Shifting gears correctly is important when driving a vehicle to ensure that the car is operating at its most efficient level.

By selecting the correct gear, you can ensure that the engine works at its optimal speed, allowing it to produce the most power with the least fuel. This helps you save money on fuel costs and reduces your car’s environmental impact.

Shifting gears correctly allows you to control the speed of your car. When accelerating, you need to select a higher gear so that the engine produces more torque, enabling your car to accelerate faster. When slowing down, you should select a lower gear to reduce the engine’s revolutions per minute (RPM), allowing you to slow down quickly and safely.

Finally, correctly shifting gears also ensure your passengers' safety, including yourself. If you shift gears too quickly or at the wrong time, you increase the risk of your car stalling, which can be dangerous in certain situations. In addition, selecting the wrong gear for your traveling speed can lead to acceleration and braking, leading to an uncomfortable and potentially difficult ride.

In conclusion, it is important to shift gears correctly when driving a vehicle to ensure efficient fuel use, control the speed of the car, and keep you and your passengers safe.

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Answer:

3m/s i believe

Explanation:

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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The part of the visual field that surrounds the figure is called linear.

Linear perspective is a visual cue that allows a viewer to discern the depth and range of an object. Field of vision of a person's eye is that portion in the space in which object is visible to the viewer. The most clear vision subtend a central angle of 3° on the eye. However the monocular visual area consists of central vision, which includes the inner 30 degrees angle of vision and central fixation, and the surrounding visual field, which expand 100 degrees laterally. A vertical line bisects central vision and divides the visual field. The blind spot is represented on a visual field chart by a partial alteration in the field of vision.

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Answer: The answer to that would be zero (0) velocity.

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Calibrating a thermometer is important to ensure that the temperature readings are accurate.

By using a set of standards with a range of known melting points, the thermometer can be calibrated against known temperatures to ensure it is providing accurate readings.

This ensures that when the thermometer is used in experiments or other applications, the measurements taken are reliable and can be trusted. Calibration also allows any potential errors in the thermometer readings to be identified and corrected.

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The distance from the dot on the screen in the center of fringe e to the left slit is half a wavelength longer than the distance from the dot to the right slit.

In a double-slit interference setup, when a monochromatic light with a wavelength of 530 nm passes through the slits, it creates an interference pattern on the screen.

In the interference pattern, the bright fringes (constructive interference) occur when the path difference between the two slits is an integer multiple of the wavelength. The dark fringes (destructive interference) occur when the path difference is half an integer multiple of the wavelength.

At the center of the fringe e, it corresponds to a bright fringe, which means the path difference between the two slits is an integer multiple of the wavelength. Since the left and right slits have the same distance from the center of the screen, the path difference between the center of the fringe and the left slit is equal to the path difference between the center of the fringe and the right slit.

Therefore, the distance from the dot on the screen in the center of fringe e to the left slit is half a wavelength longer than the distance from the dot to the right slit.

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