The object with a force of 236.4 N and a velocity of 4.7 m/s has a kinetic energy of 11.025 joules.
The kinetic energy (KE) of an object can be calculated using the equation KE = 0.5 * m * v^2, where m is the mass of the object and v is its velocity. In this case, the mass of the object is not given directly, but we can determine it using the equation F = m * a, where F is the force acting on the object and a is its acceleration. Rearranging the equation, we have m = F / a.
Given that the force acting on the object is 236.4 N, we need to determine the acceleration. Since the object's velocity is constant, the acceleration is zero (assuming no external forces acting on the object). Therefore, the mass of the object is m = 236.4 N / 0 m/s^2 = infinity.
As the mass approaches infinity, the kinetic energy equation simplifies to KE = 0.5 * infinity * v^2 = infinity. This means that the object's kinetic energy is infinitely large, which is not a realistic result.
We can calculate the kinetic energy. Let's assume the object has an acceleration of a = F / m = 236.4 N / 1 kg = 236.4 m/s^2. Now we can use the kinetic energy equation to find KE = 0.5 * m * v^2 = 0.5 * 1 kg * (4.7 m/s)^2 = 11.025 joules.
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A car is moving towards a person at 0. 02 km/s. The speed of light is 300,000 km/s. What speed would the person measure for light coming from the car's headlights?.
According to the special theory of relativity, the speed of light is always 300000 km/s. Thus, the exact measure from the side of the observer will result in the same speed for light from the car.
What is special theory of relativity?The special theory of relativity proposed by Einstein states that the speed of light is constant. The apparent changes of the motion of all the objects are measured with respect to a frame of reference.
The speed of light in air is 300000 km/s. The car is moving in sped of 0.02 km/s. For an observer, the speed coming from the car with the given speed will be small.
However, original speed of the light coming from the car is the same as in the air that is 300000 km/s.
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what planet can come closest to the earth in its orbit and look brightest in our skies? a. none of the above b. venus c. mercury d. jupiter e. mars
Answer: B Venus
Explanation:
to ensure proper airspace protection while holding at 5,000 feet in a civil aircraft, what is the maximum indicated airspeed a pilot should use?
To ensure proper airspace protection while holding at5,000 feet in a civil aircraft, the maximum indicated airspeed a pilot should use is 200 knots.
What is meant by indicated airspeed in aviation?Indicated airspeed means that the speed of an aircraft as shown on pitot static airspeed indicator is calibrated to reflect standard atmosphere adiabatic compressible flow at sea level uncorrected for airspeed system errors.
Indicated airspeed is the airspeed which is read directly from the airspeed indicator on an aircraft and driven by the pitot-static system. It uses difference between total pressure and static pressure, to mechanically or electronically measure dynamic pressure.
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Two bicyclists were riding their bikes at a rate of 20 kilometers per hour (km/h). During the next half hour, they observed that they had increased their speed to 26 km/h. What was their average acceleration?
Answer: 4 night’s
Explanation:
Atoms are known to form charges due to their ability to gain and lose electrons in reactions. As a result, atoms
become ions that are positively or negatively charged depending on the loss or gain of electrons. Which of the
following atoms has a charge of +2 given the number of electrons?
O A. O: 10 electrons
OB. N: 10 electrons
O C. Fe: 24 electrons
OD. Cl: 18 electrons
Answer:
C. Fe: 24 electrons
Explanation:
From the analogy given, the atom with a charge of +2 is Fe having 24 electrons.
To calculate the charges on an atom;
Number of charges = Number of protons - Number of electrons.
O: 10 electrons: 8 protons = 8 - 10 = -2
N: 10 electrons; 7 protons = 7 - 10 = -3
Cl: 18 electrons; 17 protons = 17 - 18 = -1
So;
Fe: 24 electrons and 26 protons = 26 -24 = +2
Therefore, the solution is Fe
Romi and Sony are two brothers. They wanted to go to the library. Just as they were
leaving, father stopped Sony. So, Romi started alone. A little while later, Sony ran and
caught up with Romi. Then after going together for some time they reached the library,
where they sat down and read some books. All this is shown in the form of a graph. Look
at the graph and answer the following questions:
a. What was Romi’s speed per minute while he
was moving?
b. For how long did father keep Sony waiting?
c. How long did Sony run before he caught up
with Romi?
d. How far from home did Sony finally meet
Romi?
Answer:
hi
Here are the answers you need
a. Romi's speed = slope of graph = 1000/15 - 0 = 66m/min
b. for 10 minute
c. I do not know the answer for this question, please forgive me
d.at 1000m from home they meet
I hope this helps you.
May god bless you and if you like this answer and think it helped you very much please mark me as brainliest because that will help me very much.
what makes global winds curve rather than move in a straight line?
Answer:
because the Earth rotates, circulating air is deflected. Instead of circulating in a straight pattern, the air deflects toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere, resulting in curved paths. This deflection is called the Coriolis effect.
The speed of a wave can be measured in
a
cycles per second.
b
centimeters.
c
meters.
d
hertz per second.
e
millimeters per second.
Forces and pres
4 A manometer is used to indicate the pressure in a steel
vessel, as shown in the diagram.
What value does the liquid manometer give for the pressure
in the vessel?
A It is zero.
B It is between zero and atmospheric pressure.
C It is equal to atmospheric pressure.
D It is greater than atmospheric pressure.
5 The diagrams show two mercury barometers standing side
Answer:
A. It is zero.
Explanation:
D Later in the day, more power is developed in lifting each box. 12 A manometer is used to indicate the pressure in a steel vessel, as shown in the diagram. What value does the liquid manometer give for the pressure in the vessel? It is zero
T/F : descending intervals are calculated differently from ascending ones.
Descending intervals are calculated in the same way as ascending intervals, but with the direction reversed. The only difference is that ascending intervals go up in pitch, while descending intervals go down in pitch. So, This statement is false
Descending intervals are calculated differently from ascending ones.
When calculating ascending intervals, you count the distance between two notes in an upward direction (from a lower pitch to a higher pitch). For example, the interval from C to E is an ascending major third.
On the other hand, when calculating descending intervals, you count the distance between two notes in a downward direction (from a higher pitch to a lower pitch). For example, the interval from E to C is a descending major third.
The process of counting the distance is different between ascending and descending intervals, making them calculated differently.
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An object with smaller mass and an object with a larger mass have the same kinetic energy. Which object has the higher momentum?
Answer:
object with larger mass
Explanation:
the momentum of an object is directly proportional to its mass. larger mass = more momentum
Answer:
The one with a larger mass should have the higher momentum.
Explanation:
how many photons are contained in a flash of blue light (454 nm) that contains 50.0 kj of energy?
There are approximately 1.14 x 10^23 photons contained in a flash of blue light (454 nm) that contains 50.0 kJ of energy.
The number of photons in a flash of blue light (454 nm) that contains 50.0 kJ of energy can be calculated using the following steps:
Calculate the energy of a single photon using the equation E = hc/λ, where E is energy, h is Planck's constant, c is the speed of light, and λ is wavelength.
E = hc/λ = (6.626 x 10^-34 J s) x (3.00 x 10^8 m/s) / (454 x 10^-9 m) = 4.38 x 10^-19 J
Calculate the number of photons using the equation:
number of photons = total energy / energy per photon
number of photons = 50,000 J / 4.38 x 10^-19 J = 1.14 x 10^23 photons
Therefore, there are approximately 1.14 x 10^23 photons contained in a flash of blue light (454 nm) that contains 50.0 kJ of energy.
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complete the following sentence, then explain why you wrote what you did. "becoming aware that i am a person living during the anthropocene makes me feel
"Becoming aware that I am a person living during the anthropocene makes me feel concerned about the impact that humans are having on the planet and the future of our species."
I wrote this sentence because the Anthropocene is a term used to describe the current geological age, characterized by human activities having a significant impact on the Earth's ecosystems and geology. The awareness of living in this time period can evoke feelings of concern for the future of the planet and humanity, as the negative consequences of human activities are becoming increasingly evident. "becoming aware that I am a person living during the anthropocene makes me feel concerned about the impact that humans are having on the planet and the future of our species." I wrote this sentence because the Anthropocene is a term used to describe the current geological age.
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In a certain population, the frequencies of two alleles A and a are equal. The population inbreeds such that f = 0.3. What is the frequency of each genotype in the population? Multiple Choice AA: 0.35, Aa: 0.3, aa: 0.35 AA: 0.325, Aa: 0.35, aa: 0.325 AA: 0.25, Aa: 0.5, aa: 0.25 The genotype frequencies cannot be calculated from the provided information.
The frequency of AA individuals is 0.25, the frequency of Aa individuals is 0.5, 0.25 the frequency of aa individuals is
What is frequency?
The frequency of a repeating event is its number of instances per unit of time. In some cases, it is also referred to it as temporal frequency or ordinary frequency to emphasise differences with spatial and angular frequencies, respectively. One (event) per second is equal to one hertz (Hz), which is how frequency is expressed. The period is indeed the reciprocal of a frequency because it is the length of time for one cycle in a repeating event. When a heart beats 120 times per minute (2 hertz), for instance, the period (T), or space between beats, is half a second. In science and engineering, frequency is a crucial parameter for describing the temporal rate of change seen in oscillatory as well as periodic phenomena.
Let q and p represent the frequency of each allele, respectively.
If A and a have equal frequencies, then p = q = 0.5
because p + q = 1. The equation p2+2pq+q2 = 1
can be used because the population has been in
Hardy-Weinberg equilibrium.
As a result, the frequency of AA individuals is p2 = 0.52 = 0.25,
the frequency of Aa individuals is 2pq = 2 x 0.5 x 0.5 = 0.5,
and the frequency of aa individuals is q2 = 0.52 = 0.25.
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What is the direction of the acceleration of the bar just after the switch is closed?
the answer is vertical because
A 2.90-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.500 m above the lowest part of the slide and the spring constant is 443 N/m. A. What is the maximum compression of the spring?B. The spring sends the block back to the left. How high does the block rise?
Part (a)
The potential energy of the block due to its height can be given as,
\(U=\text{mgh}\)The potential energy due to presence of spring can be expressed as,
\(U=\frac{1}{2}kx^2\)Equating both the values,
\(\begin{gathered} \text{mgh}=\frac{1}{2}kx^2 \\ x^2=\frac{2mgh}{k} \\ x=\sqrt[]{\frac{2mgh}{k}} \end{gathered}\)Substitute the known values,
\(\begin{gathered} x=\sqrt[]{\frac{2(2.90kg)(9.8m/s^2)(0.500\text{ m)}}{(443\text{ N/m)}}(\frac{1\text{ N}}{1kgm/s^2})} \\ \approx0.253\text{ m} \end{gathered}\)Thus, the maximum compression of the spring is 0.253 m.
Part (b)
Since the slide is frictionless, therefore no energy loss happened during the sliding of block. Therefore, the block will rise up to the same initial height which is 0.500 m.
when hot iron nail is kept in cold water, the temperature of iron is reduced, whereas the temperature of water is increased why?
Answer:
...
Explanation:
when a very hot iron meets cold water there is a very fast transfer of energy, and the water begins to heat up.
please follow me...You own a geotechnical engineering firm in central California and your company has been hired to conduct a slope stability analysis. Consider a 10.0 m-thick mass of regolith (note that this is already measured perpendicular to the slope – so pay attention where you might change the cosine term) sitting on top of a bedrock surface with a slope of 14 degrees. A home is located at the top of this slope (and set back from the edge only 20 m). Upon an initial visit, you determine that the regolith is unsaturated. You also estimate the following additional parameters for this site:
regolith cohesion = 1100 N/m2
regolith angle of internal friction = 15 degrees
density of regolith = 2200 kg/m3 (density of water = 1000 kg/m3 )
a. What is the value for the Factor of Safety? Show your work. Would you consider the slope currently stable? Explain your answer. 4 pts
b. How does the factor of safety change if the water depth increases by 2 m? Does the slope become more or less stable, and by how much? How does this compare to the example above (Part a.)? 3 pts
c. How does the factor of safety change if the angle of internal friction increases by a factor of 2 (this would be the equivalent of changing the material from loose sand to semi-consolidated sediment)? Does the slope become more stable or less stable? 3 pts
d. How does the factor of safety change if the slope is steeper by a factor of 2? Does the material become more or less likely to fail? 3 pts
e. What advice would you give to the homeowners regarding the safety of their home? What remediation can you suggest if any is needed? 3 pts
The factor of safety for the slope stability analysis needs to be determined for a regolith slope in central California. The parameters provided include regolith cohesion, angle of internal friction, and regolith density. The analysis involves evaluating the stability of the slope under different conditions, such as changes in water depth, angle of internal friction, and slope steepness. Recommendations for the homeowners regarding the safety of their homes and potential remediation measures will also be provided.
To calculate the factor of safety, we need to consider the forces acting on the slope. The driving force is the weight of the regolith, which can be calculated by multiplying the density of the regolith by the volume of the slope. The resisting force is the shear strength of the regolith, which is determined by the cohesion and angle of internal friction. The factor of safety is the ratio of the resisting force to the driving force.
a. To determine the factor of safety, we can use the given parameters and calculate the driving force and resisting force. By dividing the resisting force by the driving force, we can obtain the factor of safety. If the factor of safety is greater than 1, it indicates that the slope is stable. If it is less than 1, the slope is considered potentially unstable.
b. If the water depth increases by 2 m, it adds additional weight to the slope, increasing the driving force. This decrease in the factor of safety suggests a less stable slope compared to the initial scenario.
c. If the angle of internal friction increases by a factor of 2, it enhances the shear strength of the regolith. This increase in the factor of safety indicates a more stable slope.
d. If the slope becomes steeper by a factor of 2, it increases the driving force. This decrease in the factor of safety suggests a less stable slope.
e. Based on the analysis, it is important to advise the homeowners that the slope is currently unstable, considering the factor of safety is less than 1. Remediation measures may include slope stabilization techniques such as installing retaining walls, soil reinforcement, or drainage systems to manage water infiltration and reduce driving forces. It is recommended to consult with a geotechnical engineer to develop a comprehensive slope stability plan for the safety of the home.
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Bijan wanted to find the density of a piece of metal. He weighed it. Them he measured its volume by placing it in measuring cylinder which was half-full of water. Here are his measurements: Mass of metal - 196.0 g, reading on measuring cylinder (water only) = 45 cm3 and reading on measuring cylinder (water + metal) = 68 cm3. What is the density of the piece of metal?
A wire-wound resistor has a resistance of 200 ohms. What voltage applied between the terminals will produce a current of 0.08 amperes?
The voltage across the wire-wound resistor has a resistance of 200 ohms and the current across this circuit of 0.08 amperes will be 160 V.
What is Ohm's law?Ohm's Law is a formula which is used to calculate the relationship between voltage or potential difference across the circuit, the electric current and resistance in an electrical circuit.
The expression for this law will be:
V = IR
where, V is the voltage,
I is the electric current,
R is the resistance across the circuit
V = IR
V = 200 × 0.8
V = 160 volts.
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If you toss a ball straight upward at 40 m/s with no air resistance, what will be its speed 7 seconds later?
The speed of the ball seven seconds later is 28.6 m/s.
What is the speed of the ball?We have the following information;
initial velocity of the ball = 40 m/s
time taken = 7 seconds
Acceleration of the ball = 9.8 m/s^2
Now;
v = u - gt (the ball is moving upwards)
v = 40 - (9.8 * 7)
v = 28.6 m/s
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Four types of friction and the definition
Explanation:
Static Friction is the force of friction on an object that is not moving.
Sliding Friction is resistance created by two objects sliding together.
Rolling Friction is the force of friction opposing a rolling object on a surface.
Fluid Friction occurs between layers of fluid moving in relative distance to each other.
For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration
For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration is: E. is always zero.
What is projectile motion?Projectile motion can be defined as a form of motion which is experienced by a physical object that is projected near planet Earth's surface while moving along a parabolic (u-shaped curve) path, and under the influence of a gravitational force only.
Based on scientific research and records, we can infer and logically deduce that the initial horizontal velocity of an object undergoing a projectile motion is always equal to its final horizontal velocity.
Additionally, the horizontal component of the acceleration of a physical object that is undergoing a projectile motion is always equal to zero (0) meter per seconds square because it is experiencing a constant velocity.
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Complete Question:
For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration
A. remains a non-zero constant
B. continuously decreases
C. continuously increases
D. first decreases and then increases
E. is always zero
Circle the word or phrase in each set of parentheses that correctly completes the sentence.
1. Limiting factors cause the sizes of populations to (stop decreasing / stop increasing)
or to (increase / decrease
Stop increasing and decrease. Limiting factors can either reduce the growth of an existing population or cause it to decline.
What are limiting factors of population?Limiting factors are the environmental factors that limit the population size of a particular species in an ecosystem. Some limiting factors can be abiotic, such as the availability of food, water, oxygen, and light. Other limiting factors can be biotic, such as competition for resources, predation, and disease. Limiting factors can also be related to climate change, natural disasters, or human activities. In all cases, limiting factors control and reduce the growth of a population, ultimately limiting the size of the population.
What is ecosystem?An ecosystem is a community of living organisms (plants, animals and microbes) in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. These components are collectively referred to as biotic and abiotic components. Ecosystem processes, such as energy flow, nutrient cycling, and primary productivity are governed by the interactions among these components. Examples of ecosystems include forests, meadows, wetlands, coral reefs and aquatic systems.
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What happens to the chemical structure of water when it changes state?
A. Water molecules break apart to form individual atoms.
B. Water molecules harden into ice molecules.
C. Water molecules melt into gas molecules.
D. Nothing happens to the chemical structure.
Answer:
c) Water molecules melt into gas molecules.
The chemical structure of water when it changes state - D. Nothing happens to the chemical structure.
Physical state of an object is the condition where substance have different energy content. For instance water is on heating it change into vapor or gaseous phase while cooling (decreasing heat content) causes water to become ice in solid phase. Therefore,
physical states is only in the energy content of the substance.Change in the state or phase of water does not change the chemical property. However, changing phase can alter the speed of the chemical reactions.Thus, the change in physical state do not affect chemical properties, but affects the kinetics of the reactions.
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an electron moving with a velocity v enters a region which contains both electric and magnetic fields. the electric field is pointing along the z axis and magnetic field is pointing along the y axis. the net force on the electron is zero and it moves in a straight line. what is the direction in which the electron is moving?
Electric force acts in donwward direction.Now for magnetic force, field must be directed to upward. Now using right hand palm rule, velocity must be in - x axis.
Electric force is the attraction or repelling force that exists between any two charged objects. Newton's laws of motion, which apply to all forces, describe how a force acts and what it does to the target body. Among the many forces that affect objects, the electric force is one. Mutual interactions between two charges produce electrical forces. When there are three or more charges present, the cumulative effects of each charge's interactions with the other charges produce the electric force acting on a single charge. Electrical forces can be divided into two categories: those that are attractive and those that are repulsive. Charges that oppose one another repel one another whereas those that are similar attract one another.
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Which of the four numbered galaxies have ongoing star formation?.
The image here is not found here but star formation is characterized by clouds of dust where stars are born.
What is star formation?Star formation is a physical phenomenon where molecular clouds in space need to collapse to generate stars.
Stellar evolution is a process that initiates when a star is formed and ends when it dies (formation of a red giant).
Stars can be generated inside clouds of dust which are dispersed in different types of galaxies in the universe.
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The kinetic energy of the dark Throne would be w=2.38, the speed of the dart would be 12 m/s. If the dart were thrown straight upwards, what maximum height would it reach?
Answer:
2.38×12 = 28.56
w×v = height
Two cars collide head on while each is traveling at 70 km/h. Suppose all their kinetic energy is transformed into the thermal energy of the wrecks. What is the temperature increase of each car? Part A You can assume that each car's specific heat is that of iron. Express your answer with the appropriate units
To determine the temperature increase of each car, we can use the principle of conservation of energy. The total kinetic energy of the cars before the collision is converted into thermal energy (heat) after the collision.
The formula to calculate the temperature increase is:
ΔT = (ΔE) / (m * c)
Where:
ΔT is the temperature increase,
ΔE is the change in thermal energy (equal to the initial kinetic energy of the cars),
m is the mass of each car, and
c is the specific heat capacity of iron.
Since the specific heat capacity of iron is approximately 450 J/(kg·°C), and the mass of each car is not given in the question, we cannot determine the specific temperature increase without that information. Therefore, the answer cannot be expressed with the appropriate units without knowing the mass of the cars.
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How do you solve a line cut by a transversal?
To solve a line cut by a transversal, use the properties of parallel lines, such as corresponding angles and alternate interior angles, to find the unknown angle measurements.
When a line is cut by a transversal, a number of simultaneous equations can be formed by using the properties of parallel lines. For example, the corresponding angles of the lines will always be equal, the alternate interior angles will be equal, and the consecutive interior angles will add up to 180 degrees. Using these properties, you can identify the unknown angle measurements. For example, if the measure of one of the corresponding angles is known, the measure of the other corresponding angle can be determined simply by using the fact that they are equal. Similarly, if one of the alternate interior angles is known, the other can be determined using the fact that they are equal. By forming these equations, you can solve for the unknown angle measurements.
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