The force doubles as it is directly proportional to the radius.
Does anything move faster when it follows a circular path?A shift in velocity can occur in either its magnitude (speed), its direction, or both. Even if the speed may be constant in uniform circular motion, there is always an accompanying acceleration since the direction of the velocity is continually changing.
What maintains the car's trajectory in a curve?Friction between the tyres and the road causes the centripetal force that causes the car to turn in a circular motion. If there isn't enough friction, the car will move in a curve with a larger radius and veer off the road.
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using energy ideas, we know that work is preformed on the jum,per to give him or her kinetic energy. but the norrmal force can
3. Both of the above. The normal force can provide the same amount of work as the gravitational force, since it is the force that is perpendicular to the surface and prevents the jumper from going through it. The normal force can also oppose the motion of the jumper, if the jumper is trying to go too fast and is pushing against the surface.
The Importance of the Normal ForceIn many situations in life, we rely on the normal force to keep us safe. For example, when we jump off a cliff into a pool of water, the normal force is what prevents us from going through the surface of the water and hitting the bottom of the pool. Without the normal force, we would simply fall through the water and possibly hurt ourselves.
The normal force is also important in other situations. For example, when we are driving in a car and hit a bump in the road, the normal force is what keeps us from being thrown out of our seats. Without the normal force, we would simply be thrown around inside the car and possibly injured.
So, as you can see, the normal force is important in many different situations. It is a force that we often take for granted, but which plays a vital role in keeping us safe.
Missing Options:
1. provide the same amount of work as the gravitational force2. oppose the motion of the jumper3. both of the above4. neither of the aboveLearn more about kinetic energy:
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if the intensity of a sound wave increases by 2%, what is the change in the sound level of the wave? db
If a sound wave's intensity increases by 2%, the wave's level changes to 103.0102DB.
What is the sound level?Decibels are the units used to measure sound (dB). A motorcycle engine operating is around 95 dB louder than regular conversation, which is roughly 60 dB louder than a whisper. Your hearing may begin to deteriorate if exposed to noise levels exceeding 70 dB for an extended length of time. Your ears may suffer instant damage from loud sounds above 120 dB.
How do you gauge sound intensity?The following equation can be used to determine sound intensity: I=Δp22ρvw. P stands for pressure change or amplitude -material density vw-sound propagation speed The size of your acoustic waves oscillation determines how loud your sound will be.
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determine the location of the center of mass of the earth-moon system. the masses are and the distance between centers is
The center of mass of the earth–moon system is located at a distance 4.6 × 106 m from the center of the earth.
Distance is a numerical or every so often qualitative size of how some distance aside items or factors are. In physics or regular usage, the distance may check with a physical duration or an estimation primarily based on other criteria.
The space between two factors in physical space is the period of an immediate line among them, that's the shortest feasible course.
It reduces the entire international or part of the arena to a small sheet of paper. At the same time as making a map, cartographers pay attention to properly constitute the distance between two locations.
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the earth-moon distance is increasing laser reflectors left on the surface of the moon by the apollo astronauts show that the average distance from the earth to the moon is increasing at the rate of 3.8 cm per year.
The idea of radiation from black holes was the first example of prediction that depended in essential way on general relativity.
One gamma particle is converted into mesons.
The moon has no cluttered atmosphere and as being a vacuum based diode.
The overheating issue is the prevailing issue to instruments of analyzing the spectrum of planets.
The earth Moon distance measured wrt the cavendish experiment . The ray detector assumed 3.8 cm per year will be the progressive distance.
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Speed in electrical conduction is probably the most important aspect of the nervous system. To propagate the action potential, neurons depend on in channels opening one at a time along the length of an axon. This will slow down the speed in which an action potential is conducted. Myelinating the axons aids in speeding up the propagation time. What two functions does myelination serve? View Available Hint(s) Insulate and remove cell debris Form blood-brain barrier and remove cell debris O Speed up the propagation of action potential and form CSF Insulate and speed up the propagation of action potential
Myelinating the axons aids in speeding up the propagation time when speed in electrical conduction is probably the most important aspect of the nervous system.
A nerve cell's (neuron's) axon, or nerve fiber, is responsible for carrying nerve impulses out of the cell body. One axon, which connects a neuron to other neurons, muscle cells, or glandular cells, is the norm for a neuron. Some axons, for instance, could extend all the way from the spinal cord to the tip of a toe. Myelin, which covers the majority of vertebrate axons, speeds up impulse transmission in some big axons to up to 90 meters (300 feet) per second.
The electrical potential of the nerve membrane decreases in response to an external stimulus, and this "point of lowered potential"—the impulse—then travels along the nerve as a "wave of relative negative."
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a cold canned drink is left in a warmer room where its temperature rises because of heat transfer. is this a reversible process? explain
a cold canned drink is left in a warmer room where its temperature rises because of heat transfer. Heat transfer for a internally reversible process.
Internal reversibility means that entropy is generated within the system.
Heat transfer from a process is considered reversible if it occurs due to a small temperature difference between the environment and the system.
Let's see an example
Heat transfer with a temperature difference of 0.0001 °C appears to be more reversible than heat transfer with a temperature difference of 100 °C.
as a result ,
Reversible processes can be approached by heating or cooling the system in infinitely small steps.
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1. a 5 kg block on a ramp of 20 degrees slides down to the bottom with a coefficient of friction of 0.25. what acceleration does the block have
With a 0.25 coefficient of friction, a 5 kg block on a 20 degree ramp slides to the bottom. Block acceleration is 1.04 m/s2.
Fnet = m*a = m*g*(sinΘ-µ*cosΘ). a
= Fnet/m = g*(sinΘ-µ*cosΘ)
g*(sinΘ-µ*cosΘ) = 9.8*(sin20–0.25*cos20) = 1.04m/s²
An object can push or pull on other objects by using force. An object's rate of change in speed is referred to as acceleration. An object can exert force if it has mass and is traveling through space quickly. Newton's second law of motion explains this concept. According to Newton's second law, when a massive body is subjected to a constant force, it will accelerate—that is, change its velocity—constantly. In the most basic scenario, an object at rest accelerates in the force's direction when a force is applied to it. By means of gravity, a planet or other body pulls objects toward its center. All of the planets are kept in place by gravity.
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A stretched wire adjusted to a length of 48cm produces the same note as a tuning fork whose frequency is 256Hz. If the wire is adjusted to 32cm, what frequency of the tuning fork would be in tune with the wire?
The frequency of the tuning fork would be in tune with the wire is 384Hz.
What does frequency mean?The rate at which current changes direction each second is known as frequency. One hertz (Hz), which is a unit of measurement used internationally, equals one cycle per second.
How frequently a periodic wave form or signal repeats itself at a specific amplitude is expressed as frequency. It can be measured in hertz, kilohertz, megahertz, etc.
Frequency of fundamental v = 1/2L [tex]\sqrt{T/M}[/tex]
1st case 256 = 1/2×48 [tex]\sqrt{T/M}[/tex] (1)
2nd case v = 1/2×32 [tex]\sqrt{T/M}[/tex] (2)
dividing (2) by (1) we get,
v/256 = 2×48/2×32
v/256 = 96/64
v/256 = 1.5
v = 1.5×256
v = 384Hz.
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the physical quantity of force has group of answer choices both magnitude and direction neither magnitude nor direction direction only magnitude only
The physical quantity of force has both magnitude and direction.
Force is a vector quantity and hence has both magnitude and direction.
Force can set a body into motion or even stop a moving body. The push or pull activity on an object is called force. It is an external agent which has an ability to change the state of a body. The S.I units of force is Newton. It is given by the formula, F = m*a
where, F is external force
m is mass of an object
a is acceleration
Force can bring about various changes like accelerate the speed of a moving body, can stop a moving body, it can make a body move from rest and it can change the direction of a moving body.
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A model used for the yield Y of an agricultural crop as a function of the nitrogen level N in the soil (measured in appropriate units) is y = (kN)/(1+N^2) where k is a positive constant. What nitrogen level gives the best yield? N =?
The nitrogen level would give the best yield at N = 1
Given y = (kN)/(1+N^2)
first step is to take the derivative
the derivative is [tex]y' = \frac{k - kN^2}{( 1 + N^2)^2}[/tex]
ON equating this value of y' to 0
we get
y' = k - k[tex]N^2[/tex] = 0
k ( 1 - N^2) = 0
After dividing the above equation with k
and then subtracting we get ;
N = ± 1
However N = 1 is the only possible answer since the nitrogen level can't be negative
thus the nitrogen level gives the best yield at N = 1
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Electromagnetic radiation with a wavelength of 589 nm appears as yellow light to the human eye. The energy of one photon of this light is 3.37x10-19J. Thus, a laser that emits 1.3x10-2 of energy in one pulse of light at its wavelength produces (BLANK) photons in each pulse.
A.) 2.6x10-17
B.) 6.5x1013
C). 2.3 x1019
D.) 3.9x1016
E.) 7.4x10-24
Electromagnetic radiation with a wavelength of 589 nm appears as yellow light to the human eye. The energy of one photon of this light is 3.37x10-19J. Thus, a laser that emits 1.3x10-2 of energy in one pulse of light at its wavelength produces (BLANK) photons in each pulse is 3.9 x 10¹⁶
Electromagnetic waves( which include visible light,radio, microwaves etc) carry energy. Each photons( a quantum unit of EM radiation) possess some energy depending on the frequency of the radiation.
The energy of each photon of yellow light is given as-
E=hc/λ
n= energy of laser/energy of one photon
n= E/ El
where E= energy of one photon of the light
El=energy of a laser
λ= wavelength of light
n= no.of photons in each pulse
n=1.3*10-²/3.37*10-¹⁹
n= 3.9*10¹⁶
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write a paragraph explaining how energy flows through an ecosystem using energy pyramid trophic level producer primary consumer decomposer sun secondary comsumer tertiary consumer
Energy is transferred among organisms in meals webs from manufacturers to purchasers. The strength is utilized by organisms to perform complicated tasks.
At the bottom of the pyramid are the manufacturers, who use photosynthesis or chemosynthesis to make their very own meals. Herbivores or number one purchasers, make up the second one degree. Secondary and tertiary purchasers, omnivores and carnivores, observe withinside the next sections of the pyramid.
There is a float of strength from one trophic degree to the alternative in a meals chain. Producers deliver strength from the solar into the community. Primary purchasers consume the manufacturers, which makes them herbivores in maximum communities. Secondary consumers consume the number one purchasers, which makes them carnivores.
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if a car with mass 1300 kg were dropped vertically from a great height, how long would it take to go from zero to 60 mph (0 to 96.6 km/h), and what would the magnitude of the change in gravitational potential energy be during this time? (neglect air resistance)
It will take 2.737 s for the car to go from zero to 60 mph and the magnitude of the change in gravitational potential energy during this time is 467,685.4 J
Since we are given the mass which is 1300 kg and the speed of the car which is 60 mph( 26.8224 m/s) .According to the principle of conservation of energy, mg = ½mv² , Therefore
=> h = v²/2g, substituting the values we get
=>h = 26.8224²/(2 × 9.8) = 36.71 m
Now, from Newton's first equation of motion,
t = (v - u)/g = (26.8224 - 0)/9.8 = 2.737 s
The formula we referring to calculate the magnitude of change in gravitational potential energy is:
ΔGPE = mgh, substituting the know values we get
ΔGPE = 1300 × 9.8 × 36.71 = 467,685.4 J
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light inside the thin glass tube of a laparoscopic surgical device strikes the edge of the glass tube and is entirely reflected back into the tube
Light striking the walls of the glass cylinder and reflecting in inside tube itself is a phenomenon known as total internal reflection.
What word best describes reflection, in your opinion?Reflection is often synonymous with the verbs cogitate, contemplate, reason, hypothesize, and think. All of these expressions mean "using one's intellect, judgment, or inference faculties," but the word "reflect" means carefully considering a recollection.
What does it mean to give reflection some thought?constant verb When you ruminate, you seriously consider something. Alternatives include thinking, analyzing, planning, and thinking. More phrases containing "reflect" Reflecting feelings is the act of observing a person's verbal and nonverbal signs for their emotions and feelings, then immediately communicating (or reflecting) those attitudes to the user or customer.
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how much horizontal force must now be applied to the block to get it to begin sliding from its state of rest?
The horizontal force must overcome static friction's opposing force in order for the box to start moving.
What is meant by horizontal force?A horizontal force is one that moves parallel to the horizon. A box of bananas weighing 40.0N is perched on a flat surface. The cycle's pace tends to slow down due to an opposing force termed air resistance force, which acts in the opposite direction. Both the applied force and the air resistance force are considered horizontal forces when the direction is taken into account. While the vertical component of a force represents the portion of the force that acts in the vertical direction with respect to the body, the horizontal component of a force represents the portion of the force that acts in the horizontal direction with respect to the body.Therefore,
The horizontal force must overcome static friction's opposing force in order for the box to start moving.
F ≥ μsmg = (0.30)(12)(9.8) N = 35.28 N
F ≥ 35.28 N
The complete question is:
What horizontal force must be applied to the box to cause it to start sliding along the surface?
A 12-kg box rest on a horizontal surface. The coefficient of static friction between the box and the surface is 0.30, and the coefficient of kinetic friction is 0.20.
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a stick with a mass of 0.161 kg and a length of 1.00 m is pivoted about one end so it can rotate without friction about a horizontal axis. the meter stick is held in a horizontal position and released.
A bar rotating at the same speed is moving faster than a bar dropping from the same height. w=7.352 rad/8 is the linear velocity.
v=wxr, w=7.352rad/8
How would one define friction?The resistance to motion created when two objects rub against one another is called friction. Friction occurs whenever two items come into contact with one another. Friction force and inversely proportional from the motion and works against it. The two surfaces' respective materials have an impact on how much friction exists.
What type of force is friction?The force produced by two surfaces coming into contact and sliding against one another is referred to as frictional force. The following variables impact the frictional force: Surface roughness and the force acting pressing them together have the biggest an impact on these forces.
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Using multiple models simultaneously: This FNT refers to a process involving three moles of a diatomic gas (which behaves as an ideal gas, but as is typical near room temperature, with vibrational modes frozen out). The PV curve at right describes this process.
Determine the energy transferred as work, the change in internal energy, and the energy transferred as heat in this process.
The energy transferred as work is 550 J and the change in internal energy is 997.68 J
The work done is same as to the area under curve as shown.
W = (1.6-1.4)x10-3](55.0x105)+ -(60-55.0)x105 (1.6-1.4)x10-3
work done= 550 J
The change in internal energy is,
ΔU = nc(T2 -TI,)
=n5/2R (T2-TI])
=(3 mole) (8.314 J/mol.K) (353-337)5/2 K
=997.68 J
Putting energy into an object to cause some displacement is what is meant by the definition of work. To be able to work done is to have energy. Always the same work is completed. Potential and kinetic energy are just two examples of the various types of energy. For an object to move, energy must be transferred to it. Force is one possible way to transfer energy. Work is the term used to describe the energy expended when a force is used to move an object.
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which of the following describes beam steering accomplished by sequencing? group of answer choices all or most transducer elements are excited; small time delays between excitations of elements control the beam direction. a motor inside the transducer housing oscillates the array. small groups of elements are excited separately in succession; the active group determines beam direction. a single, separate channel and transducer element is used for each beam line.
The following describes beam steering accomplished by sequencing :
all or most transducer elements are excited; small time delays between excitations of elements control the beam direction.a single, separate channel and transducer element is used for each beam line.Beam steering is the process of changing the angle of the ultrasound beam in relation to the transducer without moving the probe. Beam steering enables a point on an image to be insonated from multiple angles using a single probe and a single probe position.
Beam steering is a technique for changing the direction of a radiation pattern's main lobe. Beam steering in radio and radar systems can be accomplished by switching antenna elements or changing the relative phases of the RF signals driving the elements.
Beam steering is accomplished by delaying the ultrasound beam's transmit and receive timing.
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Discuss how to read out the spring constant k from the graph of data obtained in the two experiments below. (You will compare both methods in the lab.) i. Student A varies force F exerted on a spring and measures its extension delta x, and plots the best-fit line of F vs delta x. ii. Student B varies mass m attached on a spring and measures the angular frequency omega of its simple harmonic oscillation, and plots the best-fit line of log omega vs log m
Spring constant can be obtained by using Hooke's formula and simple harmonic motion .
What is spring constant?Spring constant is a measure of the stiffness of spring. When spring is stretched or compressed, so that length changes by an amount x from equilibrium length, then it exerts a force F = -kx in direction towards equilibrium position.
1)When spring is stretched then the increased length is called its extension. And, F = ke
Where, F is force in newton (N) and k is the 'spring constant' (N/m)
e is the extension (m)
Hooke's Law is expressed as equation F = - k(x), where k is spring constant and x is the displacement.
2) Mass m is attached to a spring with spring constant k, then it will oscillate with a period (T). It is given as: T = 2π√(m/k).
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Describe where x-rays are found on the ems compared to the other six forms of radiation.
Incoming X-ray photons ionize atoms in a gas-filled space in a Geiger-Müller tube, also known as a Geiger counter.
Accelerating electric charges emit electromagnetic waves according to the classical electromagnetism theory. An electron beam with high energy collides with a solid target in the X-ray tube, the most popular terrestrial source of X-rays. The rapidly moving electrons in the beam repeatedly deflect and slow down as they come into contact with the electrons and nuclei of the target atoms.The different types of EM radiations include gamma rays, x-rays, ultraviolet, visible, infrared, microwave, and radiowave. Between 100 and 1000 m is the range of frequency for microwave radiation. As a result of having the second-lowest frequency range among all radiations, they also have the second-lowest energy, and their wavelength is greater than that of all other types of radiations other than radiowaves.To know more about Geiger counter-
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The thermocline is a rapid change in __________ with water depth in the ocean.
a) temperature
b) salinity
c) oxygen
d) pressure
e) density
a) temperature
A choice The thermocline is a rapid drop in temperature with oceanic depth.
A thermocline is a thin, distinct layer within a large body of fluid where temperature variations with depth are more extreme than those within layers above or below. The thermocline separates the ocean's upper mixed layer from the calm deep water below. The layer that lies between the surface's warmer mixed water and its cooler depths is known as a thermocline. In a body of water, the thermocline can generally be identified by the sudden temperature change that occurs. The thermocline in the ocean is a layer that separates the mixed upper layer from the deep ocean waters. the epipelagic zone, another name for the ocean's topmost layer
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two objects are attracting each other with a .9n gravitational force. if the distance between them is tripled, what is the new gravitational force between them?
The new force is 1/9 times of the original gravitational force
What is gravitational force ?
The force that binds all masses in the universe together, particularly the pull of the earth's mass on objects that are close to its surface. synonyms for gravity include gravitation and gravitational attraction.
The term gravitational force refers to the force that the earth exerts on a body. Examples of motion caused by gravitational force include the downward motion of water in a river, the downward motion of water in a stream, and the upward motion of a ball when it is thrown.
Let F’ be the force, when the distance between the two is tripled
therefore:
the “tripled ” acts on both the “3” and the “r” leaving 4r^3
Distance and gravitational force have an inverse square relationship.
F’ = F/9
Thus the new force is 1/9 times of the original force
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If a toaster transfers 100 joules of energy every 10 seconds, what is the power rating of the toaster?.
The power rating of the toaster will be 10 Watt
Power = Energy/time
Power = 100 joules/10 seconds = 10 Watt
So, power rating of the toaster is 10 Watt
What is Power ?Power, in science, time rate of doing work or delivering energy, expressible as the amount of work done W, or energy transferred, divided by the time interval t or W/t.
The SI unit for power is the watt W, where 1 watt equals 1 joule/second (1 W = 1 J/s).
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As you approach a steady light source, the wavelength of the emitted light appears.
As you approach a steady light source, the wavelength of the emitted light appears shorter.
The distance over which a periodic wave's shape repeats is known as its wavelength. It is a property of both traveling waves and standing waves, as well as other spatial wave patterns. It is the distance between two successive corresponding locations of the same phase on the wave, such as two neighboring crests, troughs, or zero crossings. The spatial frequency is the reciprocal of the wavelength. The Greek letter lambda () is frequently used to denote wavelength. The term wavelength is also sometimes used to describe modulated waves, their sinusoidal envelopes, or waves created by the interference of several sinusoids.
Wavelength and frequency are inversely related for a sinusoidal wave traveling at a constant speed.
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Two point charges are located on the x axis. The first is a charge +q at x=-a. The second is an unknown charge located at x=+3a. The net electric field these charges produce at the origin has a magnitude of 2keq /a 2. What are the two possible values of the unknown charge?.
The correct answer is -9Q
Electric field at origin is:
E = (2keQ/a²)
Electric field due to first charge at origin would be:
E₁ = (keQ)/a²
Electric field due to second charge would be:
E₂ = E - E₁
E₂ = (keQ)/a²
If the second charge is Q', then should be:
E₂ = (keQ)/(3a)² = (keQ)/9a²
compare the above two values to find the possible values of Q':
Q' = 9Q
The net electric field at origin is greater than the one due to first charge. It means the second charge adds on to the electric field at the origin. Thus, it should be a negative charge.
Therefore, Q' = -9Q one value is possible as the location of the second charge in this electric field is given to be on the positive x-axis.
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a 0.440-kg object attached to a spring with a force constant of 8.00 n/m vibrates in simple harmonic motion with an amplitude of 12.2 cm. (assume the position of the object is at the origin at t
The value of the objects maximum speed is 52.02 cm/s.
What is a maximum velocity (v) ?The velocity is greatest at y=0, when displacement and acceleration are both equal to zero. This means that the system is in equilibrium. Hence, at a particular point in simple harmonic motion, the maximum value of the object's speed can be calculated by using the equation,
v = A ω
Here,
v = Maximum velocity
A = Amplitude
ω = Angular frequency
What is angular frequency?The rate at which the waveform phase changes or the angular displacement of any wave element per unit of time is referred to as the angular frequency. Symbol of angular frequency is ω.
Given,
Mass of the object (m) = 0.440 kg
Force constant (K) = 8.00 n/m
Amplitude (A) = 12.2 cm
Now,
v = A ω
We know ω = √k/m
Now substituting we get,
v = A√k/m
Putting the values in the above equation, we get
v = 12.2 × √(8/0.44)
= 52.02 cm/s
Hence, the maximum speed is 52.02 cm/s.
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NOTE: The given question is incomplete on the portal. Here is the complete question.
QUESTION: A 0.440-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 12.2 cm. (Assume the position of the object is at the origin at t = 0) Calculate the maximum value of its speed in cm/s.
choose the correct description of how deeply each portion of the electromagnetic spectrum penetrates earth's atmosphere and if space telescopes are important to our understanding of the universe.
Only microwave radiation, visible light, ultraviolet light with extremely long wavelengths, and a small portion of the infrared spectrum may be seen from the ground.
Why do you use the word electromagnetic?A division of physics known as electromagnetism studies the magnetic wave that exists between particles with electrical charge. One of the fundamental forces, the electromagnetic force, produces electric radiation such as magnetic, electric, and optical fields.
Is the human body electromagnetic?Humans do emit radiation. Most of the electromagnetic radiation that humans emit has a frequency lower than that of visible light and is called infrared radiation. Not just humans can experience this effect. Thermal radiation is produced by every non-zero temperature item.
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if the diameter of the hose is decreased, and friction remains negligible, is cavitation more or less likely in the hose?
If the diameter of house decrease fiction remain neglible then these will be no effect on the chance of cavitation because it does not depend upon the diameter.
What is friction?
When two bodies are in contact with each other, friction, a type of relative force, acts as a resistance. In other words, a force opposes the relative motion of two bodies when they come into contact with one another.
What is diameter?
The line through a circle's center with two extremes on its circumference is said to have a diameter. The term "semi-circle" refers to the division of a circle into two equal parts by its diameter. A circle's center is where its diameter meets.
Horse length= 39ft
diameter= 2.5¹¹
Patm= 11 psi
Area of hose
A= π/4*(2.5/12)²
A=0.03408ft²
A= velocity and flow rate
apply the Bernoulli equation .a and b
Pa/γ+Va²/2g+Zₐ=Pb/γ+Vb²/2g+Zb
Pa=Pb= Patm, Zₐ=0 Vₐ= 0
Zv= -14ft
0+0+0= 0+Vb²/2g-14
Vb= [tex]\sqrt{14*2g}[/tex]= [tex]\sqrt{14*2*32.17}[/tex]
Vb= 30.01 ft/s
flow rate Q=AV =0.03408*30.01
Q= 1.023 ft\s
b, Due to neglecting the friction the velocity of flow is more so that calculated discharge is over estimated.
c, negative pressure is occur at point C(Pc)
Pc is below the atmosphere pressure positive is at bottom of tank
d, vapour pressure of water at 100F Pv =0.615psi
apply energy equation between point A and C
PA\Yw + Za + Va²/2g = Pc/γ + Zc + Vc²/2g
11\Yw +0+0 = Pc\γ + H +(30.01)²/2*32.17 (Vb=Va)
for no cavitation Pc > Pv =0.615psi
11/γ -0.615/γw =H+13.98
10.385*144/62.4 = H+13.98
H< 9.98 ft
e. if the diameter of house decrease fiction remain neglible then these will be no effect on the chance of cavitation because it does not depend upon the diameter.
Therefore, if the diameter of house decrease fiction remain neglible then these will be no effect on the chance of cavitation because it does not depend upon the diameter.
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suppose that the internal energy of a system has been increased, resulting in an increase in the temperature of the system. which of the following is the cause of this change?
No, according to the first law, whether a certain amount of energy is added by doing work on the system or by adding heat, the internal energy will change in the same way.
A thermodynamic system's total internal energy is defined as the energy it possesses. It consists of both internal kinetic energy and potential energy contributions, and it is the energy required to develop or prepare the system in its current internal condition. The system's energy gains and losses resulting from modifications to its internal state are tracked by this mechanism. It excludes all external energies from surrounding force fields as well as the kinetic energy of the system's overall motion. The first law of thermodynamics, which is based on the idea that an isolated system's internal energy is constant, is stated as the law of conservation of energy. An vast quality is the internal energy.
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a 2000 kg roller coaster car reaches is traveling at 18 m/s as passes the top of a 24 m radius loop. determine the force that the roller coaster car exerts on the track of the loop at this point.
The force exerted by the roller coaster car on the loop's track at this position is 46600 N, also known as the upward force. Upward force is affected by net force and downward force. And downward force is affected by the gravity of the earth.
To calculate the upward force, we will use Newton's second rule of motion:
F=m·a
The following is how the upward force calculated:
Known variables:
m = 2000 kg
v = 18 m/s
r = 24 m
g = 9.8 m/s²
First, we need to find the roller coaster cas acceleration:
a = v²/r
a = (18.0m/s)²/(24.0)
a = 13.5m/s²
Net force (Fnet), as we mentioned above, is affected by the upward (F₀) and downward force (F₁) in the equation:
Fnet = F₀ - F₁
Net force is the mass of the roller coaster multiplied by its acceleration:
Fnet = m·a
Fnet = (2000kg)·(13.5m/s)
Fnet = 27000 N
Downward force (F₁) is affected by the gravity of the earth:
F₁ = m·g
F₁ = (2000kg) · (9.8m/s²)
F₁ = 19600 N
Therefore, the upward force (F₀) can be calculated using the equation:
F₀ = F(net) + F₁
F₀ = 27000N + 19600N
F₀ = 46600 N
As a result, the upward force that a 2000 kg roller coaster exerted with 18 m/s speed at 24 m radius loop is 46600 Newton
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