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An object is fired up a frictionless ramp, 65° above the horizon. If it’s initial velocity is 35m/s how long does it take for the object to return to starting point?

To choose the correct box plot, verify each of the options and make sure all the values in the plot match the values provided.

In a box plot, this value is represented by a vertical line located in the middle of the graph.

The maximum is the value located on the farthest right, while the minimum is located on the farthest left.

Divide the graph into 4 and analyze how much each quartile represents.

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Answer:

To choose the correct box plot, verify each of the options and make sure all the values in the plot match the values provided.

Explanation:

Answer:

100 yd * 3 ft/yd / 3.281 ft/m = 91.4 m

Check" 91.4 m " 3.281 ft/yd = 299.9 ft = 100 yd

The photon with an energy of \(9.01 * 10^{-19}\) J has a wavelength of approximately 220.3 nm.

To find the wavelength of a photon given its energy, we can use the equation:

E = hc/λ

Where:

E is the energy of the photon,

h is the Planck's constant (approximately 6.62607015 × 10^-34 J·s),

c is the speed of light in a vacuum (approximately 2.998 × 10^8 m/s),

λ is the wavelength of the photon.

Rearranging the equation to solve for λ, we have:

λ = hc/E

Given:

\(E = 9.01 * 10^{-19}\) J

Substituting the known values:

\(\lambda = \frac{(6.62607015 * 10^{-34} * 2.998 * 10^8 )}{(9.01 * 10^{-19}}\)

\(\lambda = \frac{(1.98644591 * 10^{-25})}{(9.01 * 10^{-19})}\)

\(\lambda \approx 2.203 * 10^{-7} m\)

To convert this wavelength to nanometers, we can multiply by 10⁹:

=λ ≈ 220.3 nm.

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Weighting systems are used by divers primarily to achieve and maintain neutral buoyancy underwater.

Neutral buoyancy refers to a state where the diver's overall buoyant force is equal to the force of gravity, allowing them to hover at a specific depth without sinking or floating to the surface. Achieving neutral buoyancy is crucial for divers as it provides several benefits:

1. Control and Stability: With neutral buoyancy, divers can maintain precise control over their position and movement in the water. It allows them to hover effortlessly, change depth smoothly, and conserve energy.

2. Conservation of Air and Energy: By achieving neutral buoyancy, divers can reduce the amount of effort required to move through the water. This results in more efficient swimming and helps conserve air supply and energy, allowing for longer dive durations.

3. Safety: Neutral buoyancy helps divers to avoid unintentional ascents or descents, which can be hazardous. It also allows for easier and safer interaction with marine life and delicate underwater environments, as the diver can minimize contact and disturbance.

Weighting systems, such as weight belts or integrated weight pockets in buoyancy control devices (BCDs), enable divers to adjust their buoyancy and achieve neutral buoyancy. By adding or removing weights, divers can compensate for the positive buoyancy of their bodies, wetsuits, and equipment, achieving the desired buoyancy level.

It's important for divers to properly distribute and adjust their weights based on factors like the thickness of their exposure suit, the type of equipment used, and any changes in depth or water conditions during the dive. This allows them to maintain neutral buoyancy throughout their underwater exploration, enhancing safety, control, and overall diving experience.

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The time taken for the passenger jet to move from 5 km/h to 460 km/h on the run way during the take off is 10.03 s

From the question given above, the following data were obtained:

The time taken for the the passenger jet to move from 5 km/h to 460 km/h can be obtained as follow:

a = (v – u) / t

12.6  = (127.78 – 1.39) / t

12.6 = 126.39 / t

Cross multiply

12.6  × t = 126.39

Divide both sides by 12.6

t = 126.39 / 12.6

t = 10.03 s

Thus, we can conclude that the time taken is 10.03 s

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Answer:

Explanation:

time =d/s

therefore, t =8.5/2.8

t=3.02s

Answer:

D

Explanation:

The information in the table about four different electric circuits, Circuit 1 is 40A, Circuit 2 is 80A, Circuit 3 is 160A , Circuit 4 is 240A. Circuit 4 will have the greatest electric current with 240A.

To determine the electric current in a circuit, you can use Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R).

I = V/R

So in Circuit 1 I = 20V / 0.5 Ohms = 40 A

In Circuit 2 I = 40V / 0.5 Ohms = 80 A

In Circuit 3 I = 40V / 0.25 Ohms = 160 A

In Circuit 4 I = 60V / 0.25 Ohms = 240 A

Therefore Circuit 4 will have the greatest electric current with 240A.

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48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.

To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.

1 km (kilometer) = 1000 meter

1 h (hour) = 3600 seconds

1 minutes = 60 seconds

To convert m/s into km/h,

48 m/s * 3600/1000 =  172.8 km/h

To convert m/s into m/min,

48 m/s * 60 = 2880 m/min

To convert m/s into km/s,

48 m/s ÷ 1000 = 0.048 km/s

To convert m/s into km/minutes,

48 m/s * 60 / 1000 = 2.88 km/min

Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.

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48 m/s is equivalent to  172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

To express 48 m/s in different units of velocity:

km/h (kilometers per hour):

To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.

48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h

Therefore, 48 m/s is equivalent to 172.8 km/h.

m/min (meters per minute):

To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.

48 m/s * (60 m/min / 1 s) = 2880 m/min

Therefore, 48 m/s is equivalent to 2880 m/min.

km/s (kilometers per second):

Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.

48 m/s / 1000 = 0.048 km/s

Therefore, 48 m/s is equivalent to 0.048 km/s.

km/minute (kilometers per minute):

To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.

0.048 km/s * 60 = 2.88 km/minute

So, 48 m/s is equivalent to 2.88 km/minute.

Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

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Answer:

1.)When you arrive from school and you smell cookies baking in the kitchen your brain will tell you that you are hungry and that you should go to the kitchen at that point your sense organs like your nose helps you to detect that something is baking(cookies)and your nervous system (brain)will tell you that you are hungry and it will command/direct your brain to go to the kitchen then for you to eat the cookies and drink the milk the digestive system is going go help you to chew,swallow and digest the food which has been taken and when you also run to the kitchen at the beginning your brain will direct your skeletal and muscular system because the skeletons and muscles work hand in hand,and when you finish your meal the body will circulate some nutrients or minerals from the food or snack taken to other parts of the body for energy.

2.)When you sleep the whole body is asleep except the heart which needs to continue circulating blood around the whole system and sometimes the brain may not rest when you are sleeping it may continue to do it's work that's why some people usually sleep walk or sleep talk,it means the brain is not at rest and still doing some things....Thank you for the question I hope it is very useful to you.

Answer:

3.85 V

Explanation:

The potential difference between two points can be calculated using the following equation

Where E is the energy and Q is the charge. So, replacing E = 250 J and Q = 65 C, we get:

Therefore, the potential difference is 3.85 V

Answer:

Mariner 10 in 1974 and 1975

Explanation:

The rough region would the block travel if it had a mass of 2M is L/2. Option B.

Solution:

\(\frac{1}{2}\) KA² =  MGL 2

Similarly, for the second case, we can write (let the distance traveled is x)

\(\frac{1}{2}\)kA²= 2u Mgx  

Dividing the above equations we can write,

\(2x = L \Rightarrow x = \frac{L}{2}\)

A property of a body that is a measure of inertia is usually viewed as a measure of the amount of matter contained in the body that causes it to have weight in a gravitational field. Mass is a dimensionless quantity that describes the amount of matter in a particle or object.

The mass of an object is a measure of its inertial properties or the amount of matter it contains. The weight of an object is a measure of the force exerted on it by gravity, or the force required to support it. Mass can best be understood as the amount of matter present in an object or body. Everything around us has mass.

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Answer:

BRAINLIEST PLSSSSSSSSSSSSSSSSSSSSSSSS

Thermodynamics

Explanation:

Thermodynamics is the study of energy. First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another.

a. Nusselt number (Nu) represents the ratio of convective to conductive heat transfer, indicating the efficiency of convective heat transfer.

b. The Reynolds number (Re) influences the Nusselt number by determining the flow regime, with higher Reynolds numbers corresponding to higher Nusselt numbers and more efficient convective heat transfer.

a. The physical significance of the Nusselt number is that it provides information about the efficiency of convective heat transfer. A higher Nusselt number indicates that convective heat transfer is more dominant compared to conductive heat transfer. It is commonly used to analyze heat transfer in fluid flows, such as in pipes, channels, or heat exchangers.

b. The Reynolds number influences the Nusselt number because it affects the flow regime and flow behavior. In forced convection heat transfer, the Reynolds number determines whether the flow is laminar or turbulent. The transition from laminar to turbulent flow is characterized by a critical Reynolds number.

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Answer:

My arms are doing a negative work

Explanation:

When you set something on the ground, the displacement of the object set towards the ground is in the downward direction. which means that, in this case, there is a downward displacement.

As the object is set on the ground, the force exerted by the arms on the object acts in the upward direction.

Summarily, direction of force is upwards while the direction of displacement is downwards.

Since the force and displacement act in opposite direction, a negative work is said to be done.

Explanation:

Power = work / time

Power = force × distance / time

P = (12 kg × 10 m/s²) (8 m) / (10 s)

P = 96 Watts

The average power used in raising the bucket against the gravitational force is equal to 94.08 W.

Power can be defined as the rate of doing work in unit time. The S.I. unit that is used to measure power is Watt (W) or Joule per second. Power can be described as the rate at which work is done.

Power = Work /time

Given, the mass of the bucket, m = 12 kg

The distance traveled by the bucket, d = 8 m

The work is done by the bucket, W = F.d

W = mg.d

W = 12 × 9.8 ×8

W = 940.8 J

Given, the time is taken by the bucket, t = 10 s

The power used in raising the bucket against the gravitational force:

P = W/t

P = 940.8/10

P = 94.08 W

Therefore, the average power is equal to 94.08 W.

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The minimum diameter of the steel shaft for which the maximum deflection is 2.05 mm is 41.4 mm.

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In addition to Earth, the planet Mars shows clear evidence of water erosion.

In addition to Earth, the planet Mars shows clear evidence of water erosion. Mars, often referred to as the "Red Planet," has long fascinated scientists and astronomers due to its striking similarities to Earth. Among the most compelling pieces of evidence suggesting the presence of water on Mars is the existence of ancient riverbeds, gullies, and outflow channels that bear striking resemblance to those found on our own planet.

Furthermore, Mars exhibits intricate networks of gullies that resemble the erosion features seen in terrestrial environments. These gullies, typically found on the slopes of Martian craters and hills, show signs of erosion and deposition consistent with water-carved channels. The formation of these gullies has been attributed to various mechanisms, including melting of underground ice, seasonal flows of briny water, or even groundwater seepage.

In addition to the riverbeds and gullies, Mars is also home to extensive outflow channels. These channels, such as Valles Marineris, are immense canyons that stretch for hundreds or even thousands of kilometers. They bear resemblance to the erosion caused by catastrophic floods on Earth, suggesting that large volumes of water once flowed across the Martian landscape.

While the presence of water on Mars is primarily evident through these eroded features, scientists have also found other compelling evidence. Data collected from orbiters and rovers, such as the Mars Reconnaissance Orbiter and the Curiosity rover, have detected minerals that typically form in the presence of water, such as clays and salts. These findings further support the notion that Mars was once a watery world, and that water erosion played a significant role in shaping its surface.

Although the current state of Mars is predominantly dry and arid, the evidence of water erosion provides valuable insights into its past climate and the potential for habitability. Understanding the role of water on Mars contributes to our understanding of the conditions necessary for life and provides valuable information for future human exploration and potential colonization efforts.

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The feeling can either be positive or negative.

A positive feeling can occur when one performs very well in the given home. Also, a positive feeling can come from a high level of satisfaction in the homework. When you complete your homework on time using the recommended steps, you will be sure to do well on the homework.

In other hand, a negative feeling may result from poor performance in the homework. In ability to complete the homework or missing some steps in the homework can increase your level of trepidation even before seeing your score.

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Answer:

a stone rock

Explanation:

The metamorphic rock is produced by great heat and pressure and is never melted.  

• The rock, which get changed from one kind to another is known as the metamorphic rock.  

• It is produced from either sedimentary rock or igneous rock, the majority of the Earth's crust is formed of metamorphic rock.  

• The sedimentary and igneous rock turn into metamorphic rock due to intense heat from magma and pressure from tectonic shifting.  

• The rock in spite of becoming extremely hot and under a lot of pressure does not get melt. If it gets melt it is not a metamorphic rock, it is an igneous rock.  

• The metamorphism makes the composition and texture of the mineral to change. The formation of new textures takes place due to the process known as recrystallization.  

Thus, the rock is the metamorphic rock.

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A graph that illustrates the thresholds for the frequencies as measured by the audiometer is known as an audiogram. The audiogram is a chart used by audiologists and hearing specialists to describe a patient's hearing thresholds.

Hearing thresholds are the levels at which people hear a tone or sound. The horizontal axis of the audiogram indicates the frequency of sound, which is measured in Hertz (Hz), while the vertical axis indicates the intensity of sound, which is measured in decibels (dB). The threshold is the lowest intensity level at which the patient can hear the sound. The audiogram aids in identifying hearing loss and its severity.

Audiogram: The audiogram is a graphical representation of a person's hearing thresholds for different frequencies. An audiogram is a graphical representation of a person's hearing ability. It is created by plotting the lowest intensity at which an individual hears different frequencies on a chart. The audiogram aids in determining the type and degree of hearing loss. The degree of hearing loss can be classified as normal, mild, moderate, severe, or profound, based on the hearing thresholds. The shape of the audiogram may also provide insight into the type of hearing loss. An audiogram can be used to show a patient's hearing loss and to help audiologists recommend the best hearing aid or other hearing assistive technology.

An audiogram is a graph that shows the thresholds for different frequencies of sound as measured by an audiometer. An audiogram is used to assess a person's hearing levels and determine the type and degree of hearing loss. It is a tool used by audiologists and other hearing specialists to diagnose and treat hearing problems.The audiogram is typically created by playing a series of tones or beeps through headphones or earbuds at different frequencies and intensities.

The person undergoing the test indicates when they can hear the sound, and the audiologist records the results on the audiogram chart. The chart typically includes a grid with frequency ranges along the horizontal axis and decibel levels along the vertical axis. The results of the audiogram are plotted on the chart, with the lowest level at which the person can hear a sound for each frequency tested.Audiograms can be used to detect hearing loss and to determine the type and severity of hearing loss. A hearing loss can be categorized as conductive, sensorineural, or mixed, based on the audiogram results.

Conductive hearing loss is caused by damage to the outer or middle ear, while sensorineural hearing loss is caused by damage to the inner ear or auditory nerve. Mixed hearing loss is a combination of both conductive and sensorineural hearing loss.The information gathered from the audiogram can be used to recommend hearing aids or other hearing assistive technology. It can also be used to monitor changes in a person's hearing over time and to adjust treatment plans as needed.

An audiogram is a valuable tool for assessing and managing hearing loss. It provides a comprehensive assessment of a person's hearing ability and can help identify the best course of treatment.

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Answer:

Explanation:

Given:

f(t) = 3*t³ - 3*t² + 1*t - 1

__________________

V - ?

a - ?

Velocity is the first derivative of the coordinate.

Acceleration is the first derivative of speed.

V(t) =  ( f(t) )' = 9*t² - 6*t + 1

a(t) = ( V(t) )' = 18*t - 6

a)

V(t) = 0

9*t² - 6*t + 1 = 0

(3*t - 1)² = 0

3*t - 1 = 0

3*t = 1

t = 1/3 ≈ 0.33 s

b)

a(t) = 0

18*t - 6 = 0

18*t = 6

t = 6 / 18 = 1/3 ≈ 0.33 s

Well, let's see ...

You said that f(t) = 3t³ - 3t² + t - 1

I have to assume that f(t) is the position of the praticle at time t .

Then the object's speed is the first derivative.  That's s(t) = 9t² - 6t + 1

Speed is zero when S(t) = 9t² - 6t + 1 = 0

Solve that ugly thing with the quadratic formula, and you'll get  t = 1/3 .

The object's acceleration is the second derivative.  That's A(t) = 18t - 6 .

Acceleration is zero when A(t) = 18t - 6 = 0 .

Solve this thing with elementary algebra, and you'll get  t = 1/3 .

Ordinarily we'd be surprised to encounter a praticle whose speed and acceleration are both apparently zero at the same time.  This would cause us discomfort, and we would check our work over and over about six times, but we'd keep coming up with the same answers.  We'd slink away then, more uncomfortable than ever and with the dark suspicion that this praticle must have some kind of goofy motion.  

THAT happens to be exactly what's going on.  The praticle's position f(t) is a third-order polynomial.  If you look at the graph, you find that its first and second derivatives are both zero at t=1/3 .  So everything is sunny and wonderful . . . not only fine, but dandy as well !

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Answer:420ms^-1

Conserving linear momentum (mv)=(MV)

Answer:

"Translation" simply means moving. In a translation, every point of the shape must move the same distance and in the same direction.

The suspension of the automobile quickly returns to its natural position.

The objective of your car suspension is to lessen a bump as much as possible and return to its nominal condition as quickly as possible so that it is ready for the next jolt.

There are only three variables to consider here: mass, springs, and damping.

The spring has two manipulateable qualities. Spring force is determined by the vehicle mass (it must sustain it) and spring rate, which can be raised at the expense of a harsher ride.

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