Assuming that the students
worldwide are being considered, because of the extremely large population, this
can be considered as a binomial distribution. A normal distribution is used most
usually as a fair approximation of the binomial. The mean is the expectation,
therefore:
E[x] = np = (16)(0.22) = 3.52
μ = 3.52
To find the mean for the number of students who work full time in samples of size 16, multiply the sample size by the percentage of students who work full time.
Explanation:To find the mean for the number of students who work full time in samples of size 16, we can simply multiply the sample size (16) by the percentage of students who work full time (22%):
Mean = 16 * 0.22 = 3.52
Therefore, the mean number of students who work full time in samples of size 16 is 3.52.
What type of radiation is at just shorter wavelengths than visible light? just longer wavelengths than visible light?
Answer:ultraviolet radiation
Explanation:answer for A P E X
Why do you seem to "fly forward" when you slam on the brakes of a car? what forces are involved?
A blue car with mass mc = 468 kg is moving east with a speed of vc = 21 m/s and collides with a purple truck with mass mt = 1264 kg that is moving south with a speed of vt = 12 m/s . the two collide and lock together after the collision. 1) what is the magnitude of the initial momentum of the car
Explain why identical objects at the same height would have different gravitational potential energies on different planets
The transmission capacity of a computer or communicationsâ channel, measured in bits perâ second, is called theâ ________.
a. none of these terms
b. transmission rate
c. subscription rate
d. signal strength
e. bandwidth
What is the difference between the initial position and the final position of an object?
How is the direction of a vector affected when it is multiplied by a scalar?
A 6 kilogram cat is resting on top of a bookshelf that is 2 meters high. What is the cat’s gravitational potential energy relative to the floor?
Answer:6x9.8m/sx2=117.6
Explanation:
Why should you not erase construction lines?
Construction lines are essential for maintaining the accuracy and integrity of designs in fields like engineering, architecture, and mapping. Erasing such lines can lead to misunderstandings and inaccurate representations, potentially causing disastrous outcomes in the physical construction or interpretation of structures and mappings.
Construction lines should not be erased because they serve as foundational elements for a design, representing the initial guidelines that contribute to the final drawing or structure. For example, in topographic map interpretation, contour lines are crucial as they indicate the elevation and shape of the terrain, and erasing them would eliminate critical information required for understanding landform shapes and gradients. Similarly, when engaging in geological mapping, one must ensure that a geologic trace does not cross a topographic contour except where the structural and topographic contours intersect, preserving the accuracy of geological interpretations.
Moreover, the principles of geometry are deeply rooted in the correct understanding and depiction of lines and spaces. As in engineering and architecture, where accurate measurements and representations are foundational to the construction process, any disruption or erasing of essential lines can lead to disastrous outcomes, undermining the integrity of the structures being designed or built. Thus, construction lines must be preserved to maintain a clear and accurate representation of designs, allowing for their proper understanding, interpretation, and implementation.
SOMEONE HELP ASAP!!!
How might a synapse be changed to be more efficient in transmissions?
Of what advantage is it to use a relatively small neurotransmitter molecule such as glutamate?
Gravity is pulling an object into the sun. The closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. A line graph plotting the speed of the object against time would have which shape?
straight line of negative slope
curved line that slopes downward
curved line that slopes upward
straight line of positive slope
The line graph of speed versus time for an object pulled into the sun would be a curved line that slopes upward, indicating continuously increasing speed due to increasing gravitational force.
When an object is pulled into the sun by gravity, the gravitational force increases as it gets closer to the sun. This results in the object accelerating more as it approaches. Therefore, a line graph plotting the speed of the object against time would display a curved line that slopes upward. This curve represents the object's continuously increasing speed over time due to the increasing gravitational pull.
describe two of tesla's inventions that influenced technology and are still in use today
Serbian-American engineer and physicist Nikola Tesla (1856-1943) made dozens of breakthroughs in the production, transmission and application of electric power.
He invented the first alternating current (AC) motor which is used all over the world in business, factories and power plants.
He developed AC generation and transmission technology that we still have as the main form of delivering power to all consumers nowdays.
Why can't you you use a pump to lift water to the third floor?
Because there are fewer air molecules pushing back as the pump removes air from the well, the pressure outside the well has a greater impact. The amount of water that could be pushed up the pipe by the pressure being applied to it would be insufficient.
What is pump?A mechanical device called a pump is used to move various fluids from one place to another. It is a hydraulic device that transfers fluids from low to high pressure and from low to high levels of elevation.
The pump moves fluid by transforming the mechanical energy of the fluid into pressure energy (hydraulic energy).
Processes requiring high hydraulic pressure can also use the hydraulic pump. With the aid of large machinery, it may be seen. In general, heavy machinery requires high discharge pressures and low suction pressures.
Therefore,Because there are fewer air molecules pushing back as the pump removes air from the well, the pressure outside the well has a greater impact. The amount of water that could be pushed up the pipe by the pressure being applied to it would be insufficient.
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The variety of species in an ecosystem is known as ____
The variety of species in an ecosystem is known as biodiversity.
What is an ecosystem?All of the species that interact with one another, as well as the physical habitat in which they live, make up an ecosystem.
What is biodiversity?Biodiversity, or biological diversity, refers to the variety and variability of life present on earth. It is a measure of genetic, species, and ecosystem variation on earth.
What is the significance of biodiversity?Biodiversity is essential for the maintenance of ecological balance. It also contributes to high productivity.What is biodiversity conservation?Biodiversity conservation refers to the preservation and management of biodiversity in order to gain resources for long-term development.
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Another element is silvery-white with a shiny luster, is very brittle, and forms ions with a −2 charge. give one possible identity of this element. enter the symbol for the element.
Answer:
It is Telurium
Explanation:
This element since belong to the family VI A in the periodic table, the charge -2 is the most common of these elements. Also, its color is silver - white, because is a metalloid has luster (a property of metals) and is very brittle ( a property of non-metals). Its symbol is Te.
Which of the following objects is NOT in a state of equilibrium? 1.) A racecar maintaining a constant velocity. 2.) A motorcycle turning around a corner. 3.) A chandelier hanging from the ceiling. 4.) A hot-air balloon floating with a constant velocity while maintaining its height.
A motorcycle turning around a corner is not in a state of equilibrium. So, option 2 is correct.
What is meant by the state of equilibrium ?The state of equilibrium of an object is defined as its condition in which all the external forces acting on it are balanced. The state where Newton's first law is valid.
Here,
The state of equilibrium means that Newton's first law is valid in the situation.
That means the net force acting on an object in equilibrium will be zero.
Case-1
A racecar maintaining a constant velocity.
Here, the racecar is moving with a constant velocity. That means it will not accelerate. So, the acceleration of the racecar will be zero. Hence, the net force acting on it is also zero. Therefore, it is in equilibrium.
Case-2
A motorcycle turning around a corner.
When the motorcycle turns around a corner, it will follow a circular motion and as a result, there will be centripetal force experienced by the motorcycle. As a result, the direction of the velocity changes. Therefore, the motorcycle will not be in a state of equilibrium.
Case-3
A chandelier hanging from the ceiling
Since, the chandelier is hanging from the ceiling and it does not fall, it means that the gravitational force becomes balanced by the tension in the rope. Hence, it is under equilibrium.
Case-4
A hot-air balloon floating with a constant velocity while maintaining its height.
In this case, the hot air balloon is floating at the height due to the force of buoyancy. Since, the balloon is moving with a constant velocity, there is no acceleration and hence zero net force. So, it is in equilibrium.
Hence,
A motorcycle turning around a corner is not in a state of equilibrium.
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A satellite orbiting the moon very near the surface has a period of 110 min. use this information, together with the radius of the moon r=1.74×106m, to calculate the free-fall acceleration on the moon's surface.
The free-fall acceleration on the moon's surface is about 1.58 m/s²
[tex]\texttt{ }[/tex]
Further explanationNewton's gravitational law states that the force of attraction between two objects can be formulated as follows:
[tex]\large {\boxed {F = G \frac{m_1 ~ m_2}{R^2}} }[/tex]
F = Gravitational Force ( Newton )
G = Gravitational Constant ( 6.67 × 10⁻¹¹ Nm² / kg² )
m = Object's Mass ( kg )
R = Distance Between Objects ( m )
Let us now tackle the problem !
[tex]\texttt{ }[/tex]
Given:
Period of Satellite = T = 110 min = 6600 s
Radius of Moon = R = 1.74 × 10⁶ m
Asked:
free-fall acceleration on the moon's surface = g = ?
Solution:
[tex]\Sigma F = ma[/tex]
[tex]G \frac{ M m} { R^2 } = m \omega^2 R[/tex]
[tex]G \frac { M } { R^2 } = \omega^2 R[/tex]
[tex]g = \omega^2 R[/tex]
[tex]g = (\frac{2 \pi }{ T} )^2 R[/tex]
[tex]g = ( \frac {2\pi} { 6600 } )^2 \times ( 1.74 \times 10^6 )[/tex]
[tex]g \approx 1.58 \texttt{ m/s}^2[/tex]
[tex]\texttt{ }[/tex]
Learn moreImpacts of Gravity : https://brainly.com/question/5330244Effect of Earth’s Gravity on Objects : https://brainly.com/question/8844454The Acceleration Due To Gravity : https://brainly.com/question/4189441[tex]\texttt{ }[/tex]
Answer detailsGrade: High School
Subject: Physics
Chapter: Gravitational Fields
How many elements are in the lanthanide series?
You throw a basketball by exerting a force of 14 newtons. according to newton's third law, there is another 14 newton force created in the opposite direction. if there are two equal forces in opposite directions, how does the ball accelerate?
Ecologically speaking, which is bigger, a population or a community? Explain.
Here are a few of the fundamental words in ecology, which are simple, but may be easy to mix up because they are so similar. It is, however, quite important to be clear of what they mean. I will here try to explain how they differ by defining them and giving a few examples to illustrate how they could be applied.
A habitat is basically the site where an organism or a group lives. It may be anything from a stone in a lake, on which algae grows, to a forest containing all sorts of creatures. Note that groups within a habitat do not need to be of the same species. However, one usually speaks of habitats of individuals, species, or larger groups. For instance, the habitat of the algae would be the stone in the lake, and the forest could be the habitat of a single bear – regardless of what other organisms live there and how they are geographically distributed; here we are interested in the bear, so we define the habitat as its home range, and all that falls within it will arbitrarily be a apart of its habitat. hope this helps
What is the weight of a human eye ball
Which has the greater resistance, a thick wire or a thin wire of the same length?
What is the acceleration of a car that moves at a steady velocity of 100km/h for 100s?
Answer:
the answer is 0
Explanation:
The acceleration of a car that maintains a constant velocity of 100 km/h for 100s is zero. Acceleration is a change in velocity. Thus, if velocity is constant, that means there is no change and velocity stays the same.
Calculate the amount of heat liberated (in kj) from 411 g of mercury when it cools from 88.0°c to 12.0°c.
If it takes 150 n of force to move a box 10 meters, what is the work done on the box?
Answer:
1,500
Explanation:
If it takes 150 Newtons of force to move a box 10 meters, then the work done on the box would be 1500 Joules .
What is work done ?The total amount of energy transferred when a force is applied to move an object through some distance .
The work done is the multiplication of applied force with displacement.
Work Done = Force × Displacement
As given in the problem If it takes 150 n of force to move a box 10 meters , then we have to find out what is work done on the box ,
The work done = 150 × 10
= 1500 Joules
Thus , If it takes 150 Newtons of force to move a box 10 meters, then the work done on the box would be 1500 Joules .
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Which of the following statements is true about photosynthesis and cellular respiration A ,both process uses oxygen as a reactant B, plants perform photosynthesis C, plants perform cellular respiration
Or plants perform both photosynthesis and cellular respiration
Answer: Option D
Explanation: The cellular respiration and photosynthesis both is performed by the plants. The process of photosynthesis can be defined as the process by which the carbon dioxide and sunlight is used by the plants to make food( glucose) and releases oxygen.
This process convert light energy into chemical energy. The product formed is stored in the form of starch.
The cellular respiration breaks down the glucose and provides energy for the cells to do work.
A fully charged capacitor with a voltage of 120 v is discharged through a resistor. (a) what is the voltage across the capacitor at the end of three time constants?
The value of the voltage across the capacitor at the end of three time constants is 5.97 V.
What is electric potential energy of a capacitor?The electric potential energy of a capacitor is the energy stored by it.
It is given that the fully charged capacitor with a voltage of 120 v is discharged through a resistor.
Here, the time T is three times to the time constant. The value at this point, the potential difference around the capacitor, equals the maximum potential.
The voltage across the capacitor at the end of three time constants is,
[tex]V=120\times e^{-3}\\V=5.97\rm \; V[/tex]
Thus, the value of the voltage across the capacitor at the end of three time constants is 5.97 V.
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An audi travels at 88 km/hr over a distance of 22 km. calculate.25 the time taken for the audi to travel this distance.
Final answer:
The time taken for an Audi to travel 22 km at a speed of 88 km/hr is 0.25 hours or 15 minutes.
Explanation:
To calculate the time taken for an Audi to travel a distance of 22 km at a speed of 88 km/hr, we use the formula:
Time = Distance / Speed
Plugging in the values, we have:
Time = 22 km / 88 km/hr
Time = 0.25 hours
Therefore, the Audi takes 0.25 hours to travel 22 kilometers. To get the time in minutes, we can multiply the hours by 60:
Time in minutes = 0.25 hours × 60 minutes/hour
Time in minutes = 15 minutes
The Audi will take 15 minutes to cover the 22 km distance at a speed of 88 km/hr.
during which phase of a four-stroke engine are waste gases removed?
An atom of gadolinium has an atomic number of 64 and a mass number of 154. how many electrons, protons, and neutrons does it contain?