The resistivity, in ohm meters, of the wire is 0.001228 Ωm.
Resistivity is a measure of a material's resistance to electric current. It is the inverse of electrical conductivity and is usually expressed in ohm-meters (Ω⋅m). Resistivity is an intrinsic property of a material, meaning that it does not depend on the size or shape of the material.
Resistivity is typically measured using a four-point probe method. This involves attaching four electrodes to the material, and then measuring the voltage between the two inner electrodes while passing a known current through them. The resistivity can then be calculated using Ohm's law.
Resistivity = (Voltage x Length) / (Current x Area)
= (15.5 x 8.49) / (75.3 x (π x (0.852/2)^2))
= 0.001228 Ωm
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This type of energy utilizes heat that is stored beneath Earth's surface to heat water and produce steam. What is it?
The heat generated at great depths in the Earth's core is known as geothermal energy. Geothermal energy may be used to generate both heat and power.
What kind of energy is used to create the heat under the earth's surface?The heat that occurs within the Earth is known as geothermal energy. The Greek words "geo" (earth) and "therme" are where the term "geothermal" originates (heat). Given that heat is continually produced underground, geothermal energy is a renewable energy source. The deep hot water reservoirs of the Earth are the source of geothermal energy. As this hot water rises to the surface, geysers or hot springs spontaneously appear.
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why weren't horizontally opposed engines used in combat fighters during wwii? wouldn't they solve problems of visibility, center of gravity, etc.? i 'm not referring to light aircraft like the piper cub.
Superior forward visibility compared to radial or V-type engines is a benefit of horizontally opposed engines. For a variety of reasons, including fewer cylinders for equivalent power and smooth operation, opposed engines have today supplanted all previous forms of piston engines.
What World War II fighter plane was the most successful?The American F4U-4 Corsair carrier-based fighter-bomber, created and manufactured by Chance Vought, was the most effective fighter of World War II. More than 12,500 aircraft were produced between 1942 and 1953. The fighter had an extremely lethal arsenal and outstanding mobility.
What drawback does an opposing engine have?The requirement to gear the power from the two opposing pistons together was the biggest disadvantage. Compared to traditional piston engines, these extra weight and complexity
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a ball is thrown upward from the top of a 50 meter high building with an initial speed of 25 m/s. a. how much time does it take to reach the ground?
The time taken by the ball to fall on the ground is 2.55 seconds
The height of the building = 50 m
The initial speed = 25 m/s
The time taken to reach the ground can be found using the formula
v = u + at
where u is the initial speed
a is the acceleration
t is the time taken
At the highest point, the speed is zero which is v = 0 and the acceleration is due to gravity which is in the opposite direction of the movement of the ball. Thus,
0 = u - gt
Let us rearrange it,
t = u/g
Let us substitute the known values in the above equation, we get
t = 25 / 9.8
= 2.55 seconds
Therefore, the time taken is 2.55 seconds.
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The speed of light is c=299,792,458m/s a. Write this value in scientific notation. b. What is the value of c to four significant figures?
Answer:
Explanation:
sci notation: 2.99792458 x 10^8
4 sig figs: 2.998 x 10^8
How are sound waves and mechanical waves related?
a planet that has mass 10 jupiter masses is in a close orbit around its star. the system is estimated to be 2 billion years old. which method of exoplanet detection is best suited to finding it, if any?
The method of exoplanet detection is best suited to finding are :-
Radial Velocity. Watching for Wobble. 1020 planets discovered.Transit. Searching for Shadows. 3938 planets discovered.Direct Imaging. Taking Pictures. 62 planets discovered.Gravitational Microlensing. Light in a Gravity Lens. 145 planets discovered.Astrometry. Minuscule Movements. 2 planets discovered.A planet is a large, rounded astronomical body this is neither a star nor its remnant. The first-class available idea of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited via a protoplanetary disk. Planets grow on this disk with the aid of the slow accumulation of cloth driven via gravity, a technique known as accretion. The sun machine has at least eight planets: the terrestrial planets Mercury, Venus, Earth and Mars, and the large planets Jupiter, Saturn, Uranus and Neptune.
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In this schematic, the total resistance is 50 ohms. 100 ohms. 1,000 ohms. 100 ohms 10,000 ohms
The total resistance of the given circuit is if the circuit contains 100ohms,1000 ohms,100 ohms and 10,000 ohms resistors.
Resistance is measured in ohms, and it is represented by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who concentrated on the connection between voltage, current and resistance. He is credited for planning Ohm's Regulation.
Resistance estimations are regularly taken to demonstrate the state of a part or a circuit.
The higher the resistance, the lower the ongoing current. On the off chance that strangely high, one potential reason (among many) could be harmed guides because of consuming or erosion. The lower the obstruction, the higher the ongoing stream. Potential causes: protectors harmed by dampness or overheating.Since resistors are connected in series, so we know that when resistors are connected in series, total resistance is given by the formula
Rₙ=R₁+R₂+R₃+---------------Rₙ
So, resistors value are 50 ohms. 100 ohms. 1,000 ohms. 100 ohms 10,000 ohms.
Therefore, total resistance is 50+100+1000+100+10000=10250ohm
Hence, total resistance is 10250ohm
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what is movement of the foot upwards, as when walking on your heels, called? multiple choice question.
"Dorsiflexion" is the lifting of the front of foot to direct the top of the foot toward the front leg.
Explain the term dorsiflexion?The backward bending then contracting of the hand or foot is known as dorsiflexion.
Your foot's ankle and your hand's wrist are extended in this way. Although the term "dorsiflex" typically refers to the wrist or ankle, you can also do it with your fingers and toes.The ankle joint, that is a joint, can move in the dorsiflexion as well as plantar directions. Dorsiflexion is the lifting of the front of the foot such that the top of the foot travels toward the anterior leg, whereas plantar flexion is the lifting of the heel off the ground as well as pointing the toes downward. The ankle joint can only move in these directions.Thus, Dorsiflexion is the lifting of the front of the foot to direct the top of the foot toward the front leg.
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The complete question is-
what is movement of the foot upwards, as when walking on your heels, called?
multiple choice question.
DorsiflexionPlantarflexionassume that all of the work is useful work and not dissipated by non-conservative forces. what is the efficiency, expressed as a percentage, of the ideal cycle in the problem statement?
The efficiency of the ideal cycle expressed as ratio of work done and heat dissipated by following equation-
[tex]\alpha =\frac{dW}{dq}[/tex]
A non-conservative force is a force acting on an object and the work done by the force on the object depends on the distance traveled. During the motion of a body due to non-conservative forces, mechanical energy is dissipated, so non-conservative forces can be called dissipative gradients. In most cases, lost energy cannot be recovered. Friction is a good example of a non-conservative force.
[tex]\alpha =1-\frac{Q1}{Q2}[/tex]
A force is called a conservative force if it can be written as the gradient of a scalar potential. For example, the electric field can be represented as the gradient of the potential, which is a scalar potential.
E=−∇V
E is the electric field
V is the scalar potential.
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n mev/c, what is the magnitude of the momentum associated with a photon having an energy equal to the electron rest energy? what are the (b) wavelength and (c) frequency of the corresponding radiation?
The momentum associated with a photon having an energy equal to the electron rest energy is 0.511 MeV/c. The wavelength is 2.43pm and the frequency of the corresponding radiation is 1.24×10^20Hz
(a) The rest energy of an electron is given by E=mc^2
Thus the momentum of the photon is given as:
p = E/c = mc^2/c = mc where m is mass of electron = 9.11x10-31kg
p = 9.11x10-31x3x10^8 = 2.73x10-21kgm/s = 0.511 MeV/c
(b) the wavelength (λ) = h/p where h is planck's constant = 6.63×10−34Js
λ = 6.63×10−34/2.73x10-21 = 2.43×10−12m = 2.43pm
(c) the frequency of the corresponding radiation f =c/λ
f = 3x10^8/ 2.43×10−12 = 1.24×10^20Hz
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How could a clinician actually apply epithelial absorption techniques? Try to think of strategies other than the skin patch approach
patch (skin, ex: nicotine)-oral meds (stomach, ex: water/electrolytes)-inhalation: snort/smoke (nasal lining ex: nasal spray, cortisone (steroid))-coatings (skin, ex: lotions)-injections (blood vessel linings, ex: insulin shot)-eye drops (conjuncting : eye socket e: anti-biotic )-suppository , ex: nausea med).
What 3 kinds of absorption spectrum are there?Continuous, Line, & Band Absorption Spectrum are the different types of absorption spectrum.
What does forensic science mean by absorption?Forensics.For many years, atom absorption spectroscopy has been employed to research forensic sciences.With the aid of this equipment, forensic investigators can analyze blood samples, brain & muscle tissue, or gunshot powder residue in great detail.
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Why is the electric field negative?
Since the electric field is proportional to the size of the electric charge, which is always positive, it can never be negative. It is directly related to the size of a charge.
Additionally, as the charge is moved further away, the electric field's strength weakens. Electric field is the Force that a charge experiences divided by the amount of the charge. Thus, we consider the mod of charge as the magnitude. Thus, even in cases when the charge is negative, it turns positive due to the mod. Thus, Electric Field similarly changes to a positive state. Consequently, the electric field is always positive. The experiment is related to the orientation of the electric field line from the positive end to the negative.
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which model of the universe is currently the most accepted in light of the discovery of dark energy?
An accelerating universe is currently the most accepted in light of the discovery of dark energy.
A hypothesized energy known as "dark energy" acts in opposition to gravity by exerting a repellent, negative pressure. It has been proposed to explain the observable characteristics of far-off type Ia supernovae, which reveal the universe is expanding at a faster rate than usual.
Saul Perlmutter, Brian Schmidt, and Adam Riess are the recipients of the 2011 Nobel Prize in Physics. They made the stunning conclusion that the universe's expansion is speeding up as a result of their observations of far-off stars exploding.
The distance measurements utilizing type Ia supernovae (SN Ia) for the galaxies at high redshift provide the most direct and compelling evidence for the expanding cosmos powered by dark energy.
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The law of conservation of energy states that (1 point) Group of answer choices all energy in the universe comes from the sun and remains in the same form energy is neither created nor destroyed; it is transformed and transferred new energy within a system is converted or transferred and destroyed as it is used energy is created from the sun and is transformed from one type to another
The law of conservation of energy states that energy is neither created nor destroyed; it is transformed and transferred (option B).
What is the law of conservation of energy?The law of conservation of energy is a principle stating that energy may not be created or destroyed but can only be transformed i.e. converted from one form to another.
This means that a system always has the same amount of energy, unless it's added from the outside.
The law states that the total energy of an isolated system remains constant; it is said to be conserved over time.
Therefore, according to this question, the law of conservation of energy is described correctly by option B.
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Answer in complete sentences. You are heating up soup in a pan on the stove, while stirring the soup with a metal spoon. Although the spoon only touches the soup, and never touches the bottom of the pan, it becomes hot and burns your hand. Describe how the heat is transferred from the hot burner on the stove to the metal spoon. Be specific and give as much detail as you can. (6 points)
The heat is convicted through the soup. The soup heats up as the spoon is in the soup making the spoon hot. its like saying pouring hot water into a cup and its hot on your hand its convecting through the glass and heating up
a laser beam passing from medium 1 to medium 2 is refracted as shown. which is true?
The laser beam when passes from medium 1 to medium 2 shows the relation n1 > n2 that is option B is correct.
The laser beam in the attached figure when passing from medium 1 to medium 2 bends away from the normal. This means that the speed of the light beam is increased when it passes from medium 1 to medium 2. This means that the light beam is travelling from a slightly denser medium to slightly rarer medium as it is the property of light beam when it travels from denser to rarer medium it bends away from the normal. The refractive index of denser medium is more than that of the refractive index of rarer medium. So, we can conclude that n1 > n2.
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Complete Question:
A laser beam passing from medium 1 to medium 2 is refracted as shown. which is true?
a) n1 < n2
b) n1 > n2
c) there is not enough information to compare n1 and n2
why should we consider the normal force exerted on the block rather than the gravitational force exerted on the friction block?
A secondary amine, that is. The main organic product that results from the following reaction is 3-dimethylbutan-2-amine.
How can you identify the main reactions products?There are two possible outcomes when an asymmetrical alkene is combined with an asymmetrical reactant like HBr, HCl, or H2O. The main product of this reaction can be predicted using the Markovnikov Rule, which stipulates that hydrogen will be added to the carbon with additional hydrogen.
Why is normal force the antidote to gravity?When a force is applied to a solid surface, the normal force is created. The surface will apply an equal and opposing force to the object in touch in accordance with Newton's third law. The normal force will be attempting to balance the weight of the object due to gravity if it is resting on a level surface.
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Draw the Lewis structure for KrCl4 and answer the following questions. How many valence electrons are present in this compound? How many bonding electrons are present in this compound? How many lone pair (non-bonding) electrons are present in this compound?
The total number of valence electrons are present in this compound is 36, total bonding electrons are 8, total lone pair electrons are 28
a)The total number of valence electrons are present in this compound
Each chlorine contributes 7 Valence electrons
Krypton atom has 8 valence electrons
total number of valence electrons are 8 + (7 × 4) = 36e
b)Total bonding electrons are 4 single bonds
Therefore, Total bonding electrons are 4 × 2 = 8e
c)Krypton atom has Two lone pairs on it, chlorine has three lone pairs .
Total lone pair compounds are 2 × (4 × 3) = 14 one pairs
Total lone pair of electrons 2 × 14 =28e
An electron in an atom's outer shell is known as a valence electron, and if the outer shell is open, the valence electron can take part in the formation of a chemical bond.
The valence of an element—whether it can bond with other elements and, if so, how readily and with how many other elements—may be determined by the existence of valence electrons. Thus. the electrical. arrangement. of an element has a significant. impact on its. reactivity. A valence electron can only be found in the outermost electron shell of a main-group element; but, in a transition metal, it can also be found in an inner electron shell.
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a lens creates an image as shown. in this situation, the object distance s is
The Focal length (f) exceeds the Object distance (s).
1/v + 1/u = 1/f
As we can see in the fig. the magnitude of the object distance (u) is less than the magnitude of the image distance (v).
Also; u = - u & v = v {distance in the left of the lens is taken -ve.}.
Substituting in eqn (i) :
1/v - 1/u. = 1/f. ; & |v.| > |u|
1/v = 1/f + 1/u
Now; In order to be v greatest, 1/v should be smallest.
So, 1/f + 1/u should be smallest : NOTE : f is a fixed quantity, so value of 1/f can't be changed.
For 1/f + 1/u to be smallest, value of u must be larger.
So the Object distance (s) is larger than the Focal length (f).
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What type of metamorphosis do hive beetles undergo?
a. complete
b. incomplete
c. mesocomplete
The small hive beetles, like moths and bees, undergo complete metamorphosis.
The beetles' life cycle starts with eggs, which are laid in the hive and hatch into larvae within 2 to 3 days.
Ten to 16 days later, the larvae crawl from the hive and drop to the ground outside, where they burrow into the soil and pupate.
In about 3 to 4 weeks, they emerge as adult beetles. and re-enter the hive a week later.
This process may repeat itself several times. a year, especially during the warmth months'
An animal's physical development, including birth or hatching, is governed by a biological process called metamorphosis. This process involves a noticeable and rather rapid change in the animal's body structure as a result of cell proliferation and differentiation. Insects, fish, amphibians, mollusks, crustaceans, cnidarians, echinoderms, and tunicates are among the creatures that go through metamorphosis, which is frequently accompanied by a change in diet or behaviour. Animals can be categorised into species that undergo holometaboly (full metamorphosis), hemimetaboly (incomplete metamorphosis), or no metamorphosis ("ametaboly").
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on a circular path of radius 9 cm in air around a solenoid with increasing magnetic field, the emf is 33 volts. a wire with resistance 4 ohms is placed along the path. what is the current in the wire? a
A wire with resistance 4 ohms is placed along the path. The current in the wire I = 8.25.
calculation,
It is given that,
Radius of the circular path, r = 9 cm = 0.09 m
EMF of the solenoid, E = 33 volts
Resistance of the wire, R = 4 ohms
We need to find the current in the wire. It can be calculated using the Ohm's law. Its mathematical relation is given by :
E= IR
I = E / R
I = 33V / 4 OHM
I = 8.25
The ohm is the usual unit of electrical resistance within the international system of devices ( SI ). Ohms also are used, when increased through imaginary numbers, to indicate reactance in alternating-modern ( AC ) and radio-frequency ( RF ) programs.
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Patient autonomy and free choice are morally correct. O Subjective Relativism O Moral Reasoning O Social Contract Ethics O Rule Utilitarianism
The Correct option is A. Patient autonomy and free choice are morally correct Subjective Relativism.
"Subjectivism" insists that the sole source of expertise or authority is inside the belief of the individual. "Subjective relativism," then, as a philosophical position, broadcasts that everyone is his personal authority on ethical lifestyles, and the source of his very own moral standards.
A superficially popular approach to ethics in America today is called "subjective relativism"; as it occurs, it violates each of those commitments, and has the impact (commonly supposed) of creating ethics not possible. To make the commitments clearer, it is able to be profitable examining the errors of this easy dogma.
"Relativism" denotes any technique to ethics that holds that there are no absolute or unchanging ethical principles, but that the regulations that govern every scenario are to be determined by way of their relation to something else: the customs or culture of the u. s ., for example, or the dreams of the contributors. "Subjectivism" insists that the sole source of knowledge or authority is within the notion of the man or woman. '
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suppose that a polar bear's foot has a luminosity of . what is the bolometric absolute magnitude of the bear's foot? what is the bolometric apparent magnitude of the foot at a luminosity distance of ? if a bolometer can detect the bear's foot at a maximum luminosity distance of , what is the maximum luminosity distance at which it could detect the sun? what is the maximum luminosity distance at which it could detect a supernova with ?
The bolometric absolute magnitude of the bear's foot is M = 68.70.
Solution:
Bear's foot has a luminosity of 2 = 10 Watt
We have to find the bolometric absolute magnitude foot of the bear
we know the bolo metric absolute magnitude formula
M = -2.5 log10 (2x) —(1) will but 78.7 x 3.83×1026 20 гое 2x = Lx → refer luminosity value of L and Lx in the equation.... (i)
M = -2.5 log10 ( 10/ 78.7 x 3.83 x 10²⁶
M = -2.5 log 10 (10/301.42 x 10²⁶)
M = -2.5 -27.48
M = 68.70
We propose the radiation temperature T as a measure of circumstellar eclipses and the evolutionary development of young stellar bodies. T is the temperature of a blackbody with the same mean frequency as the observed continuum spectrum. A bolometer is an instrument used to measure radiation by measuring the temperature rise of a blackened metal strip in one of the arms of a resistance bridge.
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You are standing in front of a concave mirror. Your image appears enlarged and upside down. Where are you standing relative to the mirror?
between the focus & the centre of curvature of the mirror
The SI units for position, velocity, and acceleration are, respectively: Question 11 options: m, m/s, m/s^2 kg, m/s, m^2/s m, m/s, m^2/s kg, m/s, m/s^
The SI units for position, velocity, and acceleration are, respectively: m, m/s, m/s^2
Position is measured in meters (m). Velocity is measured in meters per second (m/s). Acceleration is measured in meters per second squared (m/s^2).
Velocity:
Velocity is the directional velocity of a moving object as an indicator of the rate of change of position, observed from a certain frame of reference and measured at a certain time reference (eg 60 km/h northward). Velocity is a fundamental concept in kinematics, a branch of classical mechanics that describes the motion of bodies.
Acceleration:
Acceleration is the rate of change of an object's velocity with respect to time. Acceleration is a vector quantity (as long as it has magnitude and direction). The direction of an object's acceleration is given by the direction of the net force acting on that object. The magnitude of the object's acceleration described by Newton's second law.
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you fly from seattle, washington to salt lake city, utah and then from salt lake city to portland, oregon. describe the meaning of adding the two velocity vectors together for each trip. explain how you could estimate the total time the entire trip would take using the vectors.
One simple resultant vector is produced when two vectors are added. Depending on the quantity that the resultant vector represents, we can infer its meaning.
What is the best way to merge two velocity vectors?In order to directly sum the two velocities, we can use the formulae v tot = v x 2 + v y 2 v tot = v x 2 + v y 2 and = tan 1 (v y / v x) = tan 1 (v y / v x).
Adding vectors produces what outcome?A resulting displacement results from the addition of displacement vectors. The only requirement is that the two vectors must be of the same vector quantity in order to add them. There will be a consequent velocity if two additional velocity vectors are added. There is a resultant force when two vectors are added.
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a block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 m/s. the mass collides with another mass, m, and rebounds with velocity -1 m/s. what impulse was delivered to mass m?
A block of mass 2 kg travels along a horizontal friction less surface with velocity 3 m/s. the mass collides with another mass, m, and rebounds with velocity -1 m/s. Thus, impulse was delivered to mass m = 8 kg.m/sec.
What is impulse?Since fast-acting force or "impact" is what is meant when the word "impulse" is used, it is possible to define impulse as "the abrupt force operating on an item for a brief period of time."
In physics, the term "impulse" is used to characterize or measure the impact of force operating gradually to alter an object's motion.
Given that,
mass of block = 2 kg
horizontal friction less surface with velocity = 3 m/s.
the mass collides with another mass m and rebounds with velocity -1 m/s.
So, impulse = mass × (change in velocity)
or, impulse = 2 kg × [3-(-1) m/sec]
or, impulse = 8 kg .m/sec
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Label the parts of the transverse wave. amplitude: crest : trough: wavelength:
A transverse wave oscillates perpendicular to the direction of energy transfer. A = Crest, B = trough, C = Amplitude, and D = Wavelength.
What is a transverse wave?
In physics, A wave whose oscillations are perpendicular to the direction of the wave's advance is called a transverse wave. This is the difference from a longitudinal wave which travels in the direction of its oscillations. Water waves are samples of a transverse wave. A simple example is given by the waves that can be built on a horizontal length of the string by anchoring one end and moving the other end up and down.
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A rifle is aimed horizontally at a target 45 m m away. The bullet hits the target 2.1 cm below the aim point.
What was the bullet’s flight time? (assume air resistance is 0)
What was the bullet’s speed as soon as it leaves the barrel?
The bullet's flight time with zero air resistance is 0.065s and the bullet speed as soon as it leaves the barrel is 692.3m/s.
How to calculate flight time and speed?To calculate flight time of the bullet we apply the formula [tex]h = \frac{1}{2} gt^{2}[/tex]
Where h = vertical displacement of bullet in meters, 2.1cm to 0.021m
g = is a gravitational constant of 9.8
t = time of flight in seconds
To find t =
[tex]t = \sqrt{\frac{2h}{g} }[/tex]
[tex]t = \sqrt{\frac{2 * 0.021}{9.8} }[/tex] = [tex]t = \sqrt{\frac{0.042}{9.8} }[/tex]
[tex]t = \sqrt{0.004286}[/tex]
t = 0.065s
For speed of bullet:
[tex]v = \frac{s}{t}[/tex]
Where v = velocity
s = horizontal distance/range of target, 45m
t = flight time in seconds, 0.065s
[tex]v = \frac{45}{0.065}[/tex]
v = 692.3m/s
The bullet's flight time on a horizontal target at 45m from the formula [tex]h = \frac{1}{2} gt^{2}[/tex] is 0.065s and using the time of flight to divide the range, the bullet leaves the barrel at a speed of 692.3m/s
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he first right-hand rule relates which two quantities?
A.
current (thumb) to magnetic field (fingers)
B.
magnetic field (thumb) to current (fingers)
C.
current (thumb) to force (fingers)
D.
force (thumb) to current (fingers)
Reset Next
Answer: A.
current (thumb) to magnetic field (fingers)
Answer:
A. current (thumb) to magnetic field (fingers)
Explanation:
According to the Right-Hand Thumb rule, if we are holding a current- carrying straight conductor in our right hand such that the thumb points toward the direction of current, then the fingers will wrap around the conductor in the direction of the field lines of the magnetic field.
Hope it helps.
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