Answer:
Explanation:
The seven factors are work load, family life, transportation, compensation policy and benefits, colleagues and supervisor, working environment and working condition and career growth.
what is the proper way to type the scientific name calvatia craniiformis
Answer:
Calvatia craniiformis
Explanation:
In writing scientific names, the genus nomenclature precedes the specie nomenclature and its first letter is usually written in capital. This is followed by the specie nomenclature that is denoted in small letters. Since these names are special or unique names, they are usually italicized to pinpoint that.
The scientific name Calvatia craniiformis is used for the fungus, brain puffball which is usually purple in color. It belongs to the family, Agaricaceae.
A golf ball rolls off a horizontal cliff with an initial speed of 10.2 m/s. The ball falls a vertical distance of 12.3 m into a lake below. How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the water? (a) Number Units (b) Number Units
The golf ball spends approximately 1.46 seconds in the air before hitting the water. Just before striking the water, its speed is approximately 18.84 m/s.
We can solve this problem by analyzing the motion of the golf ball in the vertical and horizontal directions separately. In the vertical direction, the ball falls a distance of 12.3 m due to gravity. We can use the equation of motion for vertical motion, which is given by:
\(h = (1/2)gt^2\)
where h is the vertical distance, g is the acceleration due to gravity (approximately 9.8 \(m/s^2\)), and t is the time. Rearranging the equation, we can solve for t:
\(t = \sqrt(2h / g) = \sqrt(2 * 12.3 / 9.8)\) ≈ 1.46 s
Therefore, the ball spends approximately 1.46 seconds in the air.
In the horizontal direction, the ball rolls off the cliff with an initial speed of 10.2 m/s. Since there are no horizontal forces acting on the ball, its horizontal speed remains constant throughout the motion. Therefore, the horizontal speed just before the ball strikes the water is also 10.2 m/s.
Combining the vertical and horizontal components of motion, we can find the resultant velocity just before the ball hits the water using the Pythagorean theorem:
\(v = \sqrt(v_{horizontal}^2 + v_{vertical}^2) = \sqrt(10.2^2 + 0)\) ≈ 10.2 m/s
Therefore, the speed of the ball just before it strikes the water is approximately 18.84 m/s.
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When a cannon fires a cannon ball, the cannon will recoil backwards because the...
a) energy of cannon ball and the cannon is conserved
b) momentum of cannon ball and the cannon is conserved
c) energy of the cannon is greater than the cannon ball
d) Momentum of the cannon is greater than the cannon ball.
b) momentum of cannon ball and the cannon is conserved.
According to the law of conservation of momentum, when an object, such as a cannon ball, is fired from a cannon, the momentum of the system (cannon ball and cannon) remains constant before and after the firing.
This means that the total momentum of the system before firing is equal to the total momentum of the system after firing. To conserve the momentum of the system, the cannon ball moves in one direction with a certain momentum while the cannon moves in the opposite direction with an equal amount of momentum, resulting in a recoil of the cannon.
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according to scientists,The Great Salt Lake could go dry in the next five years. (true or false)
The statement is True. according to scientists, The Great Salt Lake could go dry in the next five years.
The term "Great Salt" is not a recognized term in physics, and it is unclear what is meant by it. However, if you are referring to the Great Salt Lake, then it is a large saltwater lake located in Utah, USA. As a physical entity, the Great Salt Lake has several interesting properties due to its high salinity.
For example, it is denser than freshwater and can therefore support heavier objects. Its high salt content also lowers the freezing point of water, which means that the lake's surface remains liquid even in extremely cold temperatures. These properties have practical applications, such as for the extraction of minerals from the lakebed and the testing of buoyancy and flotation devices.
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The legal highway speed limit in colorado is 75 miles per hour. What is this in kilometers per hour?
How do I find the summation fo Fx and summation of Fy without knowing variables?
As well as ax and ay?
Example:
By resolving forces into their components and adding them together, you can determine the resultant force in the x and y directions without knowing the actual variables involved.
To find the summation of Fx and summation of Fy without knowing the specific variables, you need to have information about the forces acting on an object in the x and y directions. If you have the magnitudes and directions of individual forces, you can use vector addition to determine the resultant force in each direction.
Here's a general approach to finding the summation of Fx and Fy:
Identify the forces: Start by identifying all the forces acting on the object and their directions. Each force can be represented as a vector with a magnitude and direction.
Resolve forces: If the forces are not already given in the x and y directions, you need to resolve them into their x and y components. Use trigonometry (sine and cosine) to determine the components of each force along the x-axis (Fx) and the y-axis (Fy).
Sum the components: Add up all the individual components of forces acting in the x-direction to find the summation of Fx. Similarly, add up all the individual components of forces acting in the y-direction to find the summation of Fy.
Summation of Fx = F1x + F2x + F3x + ...
Summation of Fy = F1y + F2y + F3y + ...
Combine components: If there are forces acting at an angle to the x and y axes, you can use the Pythagorean theorem and trigonometry to find the resultant force in each direction.
Summation of Fx = √(F1x^2 + F2x^2 + F3x^2 + ...) (taking into account both magnitudes and directions)
Summation of Fy = √(F1y^2 + F2y^2 + F3y^2 + ...) (taking into account both magnitudes and directions)
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4. A 5.00-kg sled starts at rest and accelerates down a 45.0° incline. The coefficient of
kinetic friction between the mass and the incline is .185.
a) What is the value of the of the acceleration of the sled
Answer: \(5.64\ m/s^2\)
Explanation:
Given
mass of sled m=5 kg
Elevation \(\theta =45^{\circ}\)
\(\mu _k=0.185\) (coefficient of kinetic friction)
Friction will oppose the motion of the sled while sled weight sin component helps it to move down the incline
\(W\sin\theta-F_r=ma\\where\\W=weight(mg)\\F_r=Friction(\mu_kmg\cos\theta)\\a=acceleration\)
Substituting values
\(mg\sin \theta-\mu_kmgcos\theta=ma\\g\sin \theta-\mu_kg\cos \theta=a\\a=g(\sin 45^{\circ}-0.185\times \cos 45^{\circ})\\a=5.64\ m/s^2\)
Describe the following briefly:
(i) Discounted Payback period and Benefit/Cost ratio (ii) Elements of Book-keeping & Profit and Loss account
(iii) Identify some common important Finance ratios (iv) BFD, PFD & PID (v) Gantt Chart (vi) Ethics & Professionalism (vii) Heuristics for Storage Vessels and Pressure Vessels (viii) Heuristics for Reactors and Heat Exchangers (ix) Heuristics of Distillation and Absorption Towers
DPP is a method of capital budgeting. It is the length of time required to recover the initial cash outflow discounted at a specific interest rate.
(i) Discounted Payback Period (DPP): It is a method of capital budgeting. It is the length of time required to recover the initial cash outflow discounted at a specific interest rate. Benefit/Cost Ratio (BCR): It is the ratio of the present value of benefits to the present value of costs. It is used in cost-benefit analysis to identify whether a proposed project or investment is feasible.
(ii) Elements of Bookkeeping: Cash book, purchase book, sales book, journal, ledger. Profit and Loss Account: It is an account that records a company's profits and losses for a specific period of time.
(iii) Common important finance ratios are: Current Ratio, Quick Ratio, Debt-Equity Ratio, Inventory Turnover Ratio, Debt-Service Coverage Ratio.
(iv) BFD, PFD & PID: Block Flow Diagram (BFD), Process Flow Diagram (PFD), and Piping and Instrumentation Diagram (PID) are used to illustrate the process flow.
(v) Gantt Chart: A Gantt chart is a project management tool that uses horizontal bars to represent the duration of tasks or activities in a project.
(vi) Ethics & Professionalism: Ethics and professionalism are the practices that professionals in a particular field must adhere to. It includes the principles of honesty, transparency, fairness, and accountability.
(vii) Heuristics for Storage Vessels and Pressure Vessels: Heuristics for storage vessels and pressure vessels include choosing the correct diameter to height ratio, selecting the right material of construction, designing suitable supports, and selecting appropriate insulation.
(viii) Heuristics for Reactors and Heat Exchangers: Heuristics for reactors and heat exchangers include determining the appropriate size and shape, selecting the right material of construction, and designing suitable internals.
(ix) Heuristics of Distillation and Absorption Towers: Heuristics for distillation and absorption towers include choosing the correct column diameter, selecting appropriate packing materials, and designing suitable feed locations.
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You are holding a cup of hot tea. As you begin walking the tea spills out over the rim of the cup. Why?
the tea spilled because of air resistance.
if you had traveled faster this wouldn't have happened.
the cup and the tea act as one body with the same velocity.
the tea wanted to stay where it was, but you moved the cup.
As a body's acceleration is determined by how quickly its velocity changes over time, a body will experience zero acceleration if its velocity remains constant. A body can move at a constant speed, but its velocity may change when its direction changes. Thus, option B is correct.
What is the body to act with the same velocity?A substance only has the same velocity when it is traveling in the same direction and at the same speed. Different velocities are exhibited by objects moving at various rates, in various directions, or in both directions.
An object is considered to be moving with constant velocity when it covers the same distance every second. This implies that both the magnitude and the direction of the velocity (or speed) are constant.
This indicates that the object is not accelerating or decelerating or altering its velocity over time.
Therefore, if you had travelled faster, this wouldn't have happened.
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Which source of energy is used in a nuclear power station to generate electrical energy
Steam is produced when the cooling agent is heated by nuclear fusion. Turbines, or wheels turned by a flowing current, are rotated by the steam. The generators, which are engines that produce power, are driven by the turbines. Above process is followed in a nuclear power station to generate electrical energy.
Electrical energy is the energy that emerges from the kinetic or potential energy of charged particles. It is referred to be energy that has undergone transformation from overall electric potential energy.
Electrical energy can be described as the result of electrons travelling between two points. The movement of charged particles along or through a medium is known as electricity or current (like a wire).
The basic unit of electrical energy is the joule, also referred to as a watt-second. One joule of electrical energy is produced when one amp of current flows through a circuit for one second while a potential difference of one volt is applied across it.
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You decide to "go green" and use an exercise bike to power your home appliances. Assume that your exercise bike is rigged to generate electrical power with 60% efficiency. In other words, only 6/10 of the power you develop
can be used to store electrical energy for later use. Consider your 3500-Watt central AC unit. You need to run this unit for 4 hours each day during the summer. If you can develop a sustained power of 300 Watts on your exercise bike, how long would you have to work out just to keep the AC
running on a summer day?
The amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.
Let's start with calculating the amount of energy that the AC unit consumes in a day.
Power = Voltage x Current
The power consumption of the AC unit is 3500 Watts.
Time = Power / Voltage x Current (Ohm's Law)
Assuming that your home uses 120 volts AC, the amount of current needed is as follows:
Current = Power / Voltage
= 3500 W / 120 V
= 29.16 A.
The time required to operate the AC unit for four hours per day is:
Time = Power / Voltage x Current
= 3500 W x 4 hr / 120 V x 29.16 A
= 12 hours.
Now, if you can generate a consistent power of 300 watts on the exercise bike, the amount of time you'd need to work out each day to keep the AC unit running for four hours would be:
Time required for the exercise bike = Time for AC Unit x (Power required by AC unit / Power generated by exercise bike)
Time required for the exercise bike = 4 hours x (3500 W / 300 W)
Time required for the exercise bike = 46.7 hours.
Using an exercise bike to generate electricity is a great idea, but it would be difficult to generate enough energy to keep large home appliances running, such as a central AC unit.
In this case, the amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.
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Describe the energy of the skier at location W.*
At point W, potential energy is greatest and kinetic energy is least.
At point W, potential energy is least and kinetic energy is greatest.
At point W, potential energy and kinetic energy are the same.
Answer:
The description of the energy of the skier at point W is,
At point W, potential energy is greatest and kinetic energy is least
Explanation:
The given parameters are;
The highest point of the skier's path = Point W
The lowest point of the skier's path = Point X
The height of the peak after point X = Intermediate between point W and point X
The potential energy of the skier, P.E. = m·g·h
The kinetic energy of the skier, K.E. = 1/2·m·v²
The total mechanical energy of the skier, M.E. = P.E. + K.E.= Constant
Where;
m = The mass of the skier
g = The acceleration due to gravity = 9.8 m/s²
h = The height of the skier
v = The velocity of the skier
Therefore, the P.E. of the skier is highest at the highest point of the skier's path which is the point W, where h = Maximum
Similarly, the potential energy of the skier will be lowest at point X which is the lowest point on the skier's path
From P.E. + K.E. = constant, the kinetic energy will be least at point W, where the potential energy is highest.
Therefore, the description of the energy of the skier at point W is that the potential energy is greatest and kinetic energy is least.
10 Points
The low density gas layer surrounding a star is known as the
O A. Corona
B. Core
C. Convective zone
o
D. Radiative zone
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Calculate thc work that must be done on charges brought from infinity to charge & spherical shell of radius R" 0.1OO m to & total charge Q-125 mc 502 J B) 602 J C) 702 ] D) 802 J E) 902 J
The work that must be done on charges brought from infinity to a spherical shell of radius R = 0.100 m and total charge Q = 125 mc is 602J. Hence, option B is the correct answer to this question.
To calculate the work that must be done on charges brought from infinity to a spherical shell of radius R, we can use the formula for the electric potential energy, which is given by U = kq1q2/r
Where k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between the charges.
In this case, the work done on a single charge of q = Q/n, where Q is the total charge on the shell and n is the number of charges, brought from infinity to a distance of r = R from the center of the spherical shell is given by:
W = qU = q(kq/R) = kq^2/R
Since the total charge on the spherical shell is Q = 125 mc and the radius of the shell is R = 0.100 m, the work done on each charge is:
W = kq^2/R = (8.99x10^9 N.m^2/C^2)(125x10^-6 C)^2/(0.100 m) = 602 J
Therefore, the work that must be done on charges brought from infinity to a spherical shell of radius R = 0.100 m and total charge Q = 125 mc is 602 J.
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The buildup of thermal energy in a collapsing gas cloud leads to thermal pressure that can halt the gravitational collapse. What must happen for the gravitational collapse to continue?.
Answer:The buildup of thermal energy in a collapsing gas cloud leads to thermal pressure that can halt the gravitational collapse. What must happen for the gravitational collapse to continue? The cloud must radiate away some of its thermal energy.
Explanation:
A point charge q1=5. 00μC is held fixed in space. From a horizontal distance of 8. 00 cm, a small sphere with mass 4. 00×10−3kg and charge q2=+2. 00μC is fired toward the fixed charge with an initial speed of 35. 0 m/s. Gravity can be neglected.
What is the acceleration of the sphere at the instant when its speed is 27. 0 m/s
According to the given statement , the acceleration of the sphere at the instant when its speed is 27.0 m/s.
We can use the principles of electrostatics and kinematics. a = [(9.00 x 10⁹ N * m² / C²) * |5.00 μC * 2.00 μC| / (0.08 m)²] / (4.00 x 10⁻³ kg).
1. Determine the electric force between the two charges:
- The electric force between two charges can be calculated using Coulomb's Law:
F = k * |q1 * q2| / r².
- In this case, q1 = 5.00 μC and q2 = +2.00 μC. The distance between them, r, is the horizontal distance of 8.00 cm (which is 0.08 m).
- The constant k is 9.00 x 10⁹ N * m^2 / C².
- Plugging in the values, we get F = (9.00 x 10^9 N * m² / C²) * |5.00 μC * 2.00 μC| / (0.08 m)².
2. Calculate the net force acting on the sphere:
- At any instant, the net force acting on the sphere is the sum of the electric force and the force due to gravity.
- However, in this case, gravity can be neglected, as stated in the question.
- Therefore, the net force acting on the sphere is equal to the electric force between the two charges.
3. Calculate the mass of the sphere:
- The mass of the sphere is given as 4.00 x 10⁻³ kg.
4. Apply Newton's second law:
- Newton's second law states that the net force acting on an object is equal to the product of its mass and acceleration: Fnet = m * a.
- In this case, the net force acting on the sphere is the electric force between the charges.
- Plugging in the values, we get (9.00 x 10⁹ N * m^2 / C²) * |5.00 μC * 2.00 μC| / (0.08 m)² = (4.00 x 10⁻³ kg) * a.
5. Solve for the acceleration:
- Rearranging the equation, we have a = [(9.00 x 10⁹ N * m² / C²) * |5.00 μC * 2.00 μC| / (0.08 m)²] / (4.00 x 10⁻³ kg).
- Evaluating the expression, we find the value of acceleration.
By following these steps, you can find the acceleration of the sphere at the instant when its speed is 27.0 m/s.
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1- All the components of the sympathetic and parasympathetic nerve pathways: a stimuli, nerve impulse, sensory neuron, interneuron, preganglionic motor neuron, chain ganglia or cranial nerve ganglia, postganglionic motor neuron, and effector organ and response
2- A diagram showing the direction of the nerve impulse along the pathway
3-Pictures and titles that help describe the pathway of the nerve impulse
4- Each pathway must include three reactions to the motor impulse (increase in heart rate or decrease in saliva—see page 3 and 4 for more options)
The sympathetic and parasympathetic nerve pathways are two divisions of the autonomic nervous system. These pathways are responsible for regulating involuntary functions such as heart rate, digestion, and respiratory rate.
In order for these pathways to function, a stimulus is needed to trigger a response. This stimulus can be internal or external. Once the stimulus is detected, a nerve impulse is sent through a sensory neuron to the central nervous system where it is processed by an interneuron.
The processed signal is then sent through a preganglionic motor neuron to either a chain ganglia or cranial nerve ganglia, depending on the location of the effector organ. From here, the signal is transmitted to a postganglionic motor neuron which sends the signal to the effector organ. The effector organ then responds to the signal, either increasing or decreasing its activity depending on the pathway that is activated.
Here is a diagram that shows the direction of the nerve impulse along the pathway:
[Insert diagram here]
To help you understand the pathway of the nerve impulse, here are some pictures and titles that describe each step of the process:
1. Stimulus Detection: This image shows an example of an external stimulus being detected by a sensory neuron.
2. Interneuron Processing: This image shows an interneuron in the central nervous system processing the signal received from the sensory neuron.
3. Preganglionic Motor Neuron: This image shows a preganglionic motor neuron sending the signal to the chain or cranial nerve ganglia.
4. Postganglionic Motor Neuron: This image shows a postganglionic motor neuron transmitting the signal to the effector organ.
5. Effector Organ Response: This image shows the effector organ responding to the signal received from the postganglionic motor neuron.
Now, for the reactions to the motor impulse. The sympathetic and parasympathetic pathways have different effects on the effector organs. Here are three possible reactions for each pathway:
Sympathetic Pathway:
1. Increase in heart rate
2. Dilated pupils
3. Decrease in saliva production
Parasympathetic Pathway:
1. Decrease in heart rate
2. Constricted pupils
3. Increase in saliva production.
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The kinetic energy of an object can be found if the object's _
and _ are known.
Answer:
The kinetic energy of an object can be found if the object's mass and velocity are know because kinetic energy is energy possessed by a body due to its motion
Explanation:
Fun fact
An apple, potato, and onion all taste the same if you eat them with your nose plugged
thats epic my guy jsjsjdjdjd
Answer:
false I think
Explanation:
A paperclip with the density of a neutron star would weigh (on the Earth)
A paperclip with the density of a neutron star would weigh approximately 0.0098 Newtons on Earth.
The density of a neutron star is incredibly high, estimated to be around \(10^{17\) to \(10^{18\) kilograms per cubic meter. Comparatively, the density of a typical paperclip made of metal is much lower, ranging from 6,000 to 9,000 kilograms per cubic meter.
To calculate the weight of a paperclip with the density of a neutron star on Earth, we need to consider the mass and gravitational acceleration. The gravitational acceleration on Earth is approximately 9.8 meters per second squared.
Let's assume the paperclip has a mass of 1 gram (0.001 kilograms) for simplicity. The weight can be calculated using the formula:
Weight = Mass x Gravitational acceleration
Weight = 0.001 kg x 9.8 m/s²
Weight = 0.0098 Newtons
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fill in the blanks
11) Stored energy is called ________ energy.
12) When you move your hand or foot, your body has converted potential energy into ________ energy.
13) When coasting while roller skating, you eventually stop due to ________.
14) A ball has 100 J of potential energy when it is on a shelf. The kinetic energy of the ball the instant it hits the floor is ________J.
Kara is pushing a shopping cart to the right. The gravitational force is acting ________.
A.) upward
B.) downward
C.) to the left
D.) to the right
Answer: Gravitational force should be downwards as gravity pulls downwards.
Explanation: Dont quote me on that
You have discovered and practiced the memory tools and study skills in this learning path.
Describe one specific tool or skill that has been most valuable for you to learn.
Describe how that specific tool or skill has been valuable.
Your answer should be at least two complete sentences.
One specific tool or skill that has been most valuable for me to learn is the technique of creating mnemonic devices. Mnemonic devices are memory aids that help me remember and recall information more easily. They involve associating the information I want to remember with vivid and memorable images, patterns, or acronyms.
This tool has been valuable because it has significantly improved my ability to retain and retrieve information. By using mnemonic devices, I can convert complex or abstract concepts into visual or auditory cues that are easier for my brain to process and store. It has helped me remember key facts, formulas, and sequences, making my studying more efficient and effective.
Additionally, mnemonic devices have made learning more engaging and fun, as I get to be creative in constructing mental associations that stick in my memory for a long time.
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Insulators can by charged only by this method
a. Induction
b. Conduction
c. Friction
Insulators can by charged only by friction.
An electrical insulator is a cloth wherein electric powered modern-day does no longer drift freely. The atoms of the insulator have tightly certain electrons which can not quite simply move. Other substances—semiconductors and conductors—conduct electric modern greater effortlessly.
Insulators are used in electric system to help and separate electrical conductors with out allowing current thru themselves. An insulating material utilized in bulk to wrap electrical cables or other gadget is known as insulation. The time period insulator is likewise used greater specially to consult insulating supports used to utility poles and transmission towers.to attach electric powered strength distribution or transmission lines
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Brian uses a starter pistol to mark the start of a 100 m sprint. The sound wave produced by the pistol reflects from a nearby wall, and he hears the echo of the shot 600 ms (milliseconds) after the pistol was fired. Calculate how far the wall was from Brian. The speed of sound in air is approximately 330 m/s
The distance that we have from which the echo sounded is 99 m.
What is echo?An echo is the repeated sound that results from sound waves being reflected off of a surface. Sound waves bounce back and re-emit from solid objects or boundaries, returning to the source of the sound. The original sound is clearly repeated in this reflected sound, giving the impression of an echo.
Echoes are most commonly experienced in environments with hard, smooth surfaces that can reflect sound effectively, such as mountains, canyons, large empty rooms, or open outdoor spaces
From echo;
V = 2x/t
x = Vt/2
x = 330 * 600 * 10^-3/2
= 99 m
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Which of the following is an advantage the Hubble Space Telescope has over ground-based telescopes?
A. There is no blurring due to the atmosphere.
B. Being weightless in space, it can utilize the largest mirror ever built.
C. It has a better view of celestial objects because it is closer to them.
D. It is always in darkness.
The advantage that the Hubble Space Telescope has over ground-based telescopes is A. There is no blurring due to the atmosphere.
This is because the Hubble is located above Earth's atmosphere and is not affected by atmospheric distortions that can blur images captured by ground-based telescopes. Additionally, option B is also correct as the weightlessness of the telescope allows for a larger mirror to be used, which enhances its capabilities. However, option C and D are incorrect as the Hubble's proximity to celestial objects and being always in darkness are not advantages but rather inherent characteristics of its location in space.
Because the Hubble Space Telescope does not possess the biggest mirror ever constructed, option B is incorrect. Although its primary mirror's diameter of 2.4 meters (7.9 feet) was deemed enormous at the time of its launch, later ground-based telescopes have been constructed with larger mirrors.
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what is types of motion
Answer: here the answer!
Explanation:
In the world of mechanics, there are four basic types of motion. These four are rotary, oscillating, linear and reciprocating. Each one moves in a slightly different way and each type of achieved using different mechanical means that help us understand linear motion and motion control.
what will happen if you increse the amplitude of a drum hit
The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases. As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder.
People have vastly different opinions on the role and responsibility of schools to provide sex education. Teenage pregnancy and sexually transmitted diseases are real problems facing our adolescent population. In some cases, the decision to engage in a sexual relationship is a life or death decision.
References:
Coon, D., Mitterer, J.O., & Martini, T. (2019). Introduction to psychology: Gateways to mind and behavior (15th ed.). Belmont, CA: Cengage Learning.
Answer: ummm is this a question?
Explanation: what I said up there ^
An airplane flies at a speed of 400 mph at an altitude of 10,000 ft. If the boundary layers on the wing surfaces behave as those on a flat plate, find the extent of laminar boundary layer flow along the wing. Assume a transitional Reynolds number of 500,000. For the same speed at sea level is the extent of the laminar region greater or less compared to that at 10,000 ft? Explain.
To find the extent of laminar boundary layer flow along the wing, we need to determine the Reynolds number for the flow.
To find the extent of laminar boundary layer flow, we need to determine the Reynolds number for the flow. The Reynolds number is a dimensionless quantity that characterizes the flow regime, and it depends on the fluid properties, flow velocity, and characteristic length scale. The transitional Reynolds number is the value above which the flow becomes turbulent, and it is typically around 500,000 for a flat plate.
Given the speed of the airplane and its altitude, we can calculate the Reynolds number and determine the extent of the laminar flow. We also need to consider the effect of altitude on the air density and viscosity, which will affect the Reynolds number. The extent of the laminar flow will be smaller at higher altitudes due to the lower air density and viscosity.
For the same speed at sea level, the extent of the laminar region is less compared to that at 10,000 ft. This is because the air density and viscosity decrease with increasing altitude, which reduces the Reynolds number. As a result, the flow becomes more likely to transition to turbulence, and the extent of the laminar flow decreases.
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