According to the given statement 355.9lb the force p for impending motion upward for block b . p.
What is Static Friction?A force that holds an entity at rest is called static friction. The definition of static friction is: The resistance people feel when they attempt to drag a stationary object across a surface without actually causing any motion between their body and or the surface they are moving the object across.
Briefing:The block B's weight is 452.73 lb
The total contact surface's coefficient of friction is μ = 0.32
Block A's inclination with respect to the horizontal creates an angle of θ = 10⁰
The friction force f1 is given by,
f1=μN1
Here N1 is the normal on vertical surface.
The friction force f2 is given by,
f2=μN2
Here N2 is the normal on inclined surface.
P = 452.73 lb sin10⁰ + 134.62 lb + .32(452.73 lb) cos 10⁰
Thus the required force is 355.9lb.
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The mass fractions of total ferrite and total cementite in an iron-carbon alloy are 0. 88 and 0. 12, respectively. Is this a hypoeutectoid or hypereutectoid alloy? why?.
This is a hypoeutectoid alloy because the mass fraction of carbon is less than the eutectoid composition of 0.8%.
What is hypoeutectoid?
The ductility of the eutectoid alloy has decreased by the a factor of three, while that of the hypoeutectoid steel has decreased by the a factor of three. The additional, fragile cementite just on pearlite grain boundaries in hyper-eutectoid alloys reduces the alloy's ductility even more. The proeutectoid cementite limits fracture to the fragile grain boundary zone and limits plastic deformation to a ferrite lamellae inside the pearlite. Such alloys must be chosen for their composition to balance such properties to the requirements of the design in order to be used in light-strong structures. Although a front fork on the a bicycle must meet certain requirements, one of those requirements is high toughness, which necessitates tailoring this same carbon content to provide the required ductility.
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Two long, straight wires cross each other at a right angle, and each carries the same current I (see figure below). Which of the following statements is true regarding the total magnetic field due to the two wires at the various points in the figure? More than one statement may be correct.a.The field is strongest at points B and D.b.The field is strongest at points A and C.c.The field is out of the page at point B and into the page at point D.d.The field is out of the page at point C and out of the page at point D.e.The field has the same magnitude at all four points.
" The Magnetic field is strongest at points B and D" and " The field is out of the page at point B and into the page at point D" these statements are correct.
How do a magnetic field and current affect a wire?Both poles of the magnet will be repelled by the magnetic field by bending away from the wire because the magnetic field produced by the electric current in the wire is changing directions around the wire.The magnitude of the magnetic field is inversely related to the perpendicular distance from the wire and proportionate to the current.The amount of current flowing is always inversely correlated with the intensity of the magnetic field. As a result, as the current grows, so does the magnetic field.Since the coil is surrounded by a concentrated magnetic field created by the electric current, this field flux can be thought of as a form of energy storage for the electrons' kinetic motion through the coil. the coil's current is higher.To learn more about magnetic field refer,
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To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are.
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are smaller.
The relativistic speed, "c," or the mathematical sign for light speed, is roughly 186,282 miles per second. Relativistic speed, then, is the speed at which such effects become essential for getting the appropriate level of measurement precision for the event in question. the differences between values calculated using theories based on relativity.
Generally speaking, sizes of items refer to a thing's size or magnitude. Geometrical size or spatial size is a more precise phrase that can be used to refer to area, volume, or linear dimensions. When a range of densities is assumed, mass can also be used to determine size. Actual file space on a disc is represented by object sizes. The logical and physical dimensions of a file can coincide.
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A solid sphere, hollow sphere, solid cylinder, hollow cylinder and ring each of mass M and radius R are simultaneously released at rest from top of incline and object rolls down the incline then match Column-I and Column-ll.
List 1
Time taken to reach bottom is maximum for
Angular acceleration maximum for
Kinetic energy at bottom is same for
Rotational kinetic energy is maximum for
List 2
Solid sphere
Hollow cylinder
Hollow sphere
Ring
Solid cylinder
The motion of rolling down involves many factors like mass, radius, gravitation, etc.
This all indicates about the moment of inertia.
The moment of inertia is a measurement of how much the object resists angular rotation.
Inertia is a property of object by which it tries to come in to rest when an external force is applied on the object. When the object is rotating then in that case the inertia acting on the body , which tries to resist its motion is called moment of inertia.
It is calculated by Mass M, Radius R and Length L.
The moment of inertia of solid sphere is 2/5 MR²The moment of inertia of hollow cylinder is 1 ⁄2 M (r₂² + r₁²).The moment of inertia of hollow sphere is 2/3 MR²The moment of inertia of ring is MR²The moment of inertia of solid cylinder is 1/2 (MR²)As the moment of inertia is the resistance to rotational motion we see that the object with least moment of inertia will reach the bottom first.
Matching the two columns, we get:
a) Time taken to reach the bottom is maximum for ring.
We also know the larger the moment of inertia, the smaller is the angular acceleration.
b) Angular acceleration is maximum for solid sphere.
c) Kinetic energy at the bottom is same for hollow and solid cylinder.
d) Rotational kinetic energy is maximum for solid sphere.
Therefore, after matching all these columns we get that these are directly related to moment of inertia.
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A weight is attached to a spring suspended vertically from a ceiling. When a driving force is applied to the system, the weight moves vertically from its equilibrium position, and this motion is modeled by
y=1/3sin2t+1/4cos2t
y=1/3sin2t+1/4cos2t
where y is the distance from equilibrium (in feet) and t is the time (in seconds). Use the identity
asin Bθ + b cosBθ = √a^2+b^2 sin(Bθ+C)
asinBθ+bcosBθ=√a 2
+b 2
sin(Bθ+C)
where C = arctan (b/a), a > 0, to write the model in the form
y=√a^2+b^2 sin(Bt+C)
y=√a 2
+b 2
sin(Bt+C)
A weight is attached to a spring suspended vertically from a ceiling.
The given model y = 1/3 sin2t + 1/4 cos 2t is to be written in the form y = √(a² + b²) sin (Bt+C) is 5/12 * sin(2t + 0.6435).
Given equation of y = 1/3 sin2t + 1/4 cos 2t
We know the identity, a sin Bθ + b cos Bθ = √a²+b² * sin(Bθ + C), C = arctan(b/a).
In our case, a = 1/3, b = 1/4, θ = t, B = 2
So we get, y = √(1/3)² + (1/4)² * sin[ 2t + arctan (1/4 ÷ 1/3)]
= √(25/144)* sin [2t + arctan (0.75)]
= 5/12 * sin(2t + 0.6435)
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two spaceships approaching each other move at very close to the speed of light, each sending a beam of light to the other. each measures the speed of light from the other spaceship as group of answer choices c. slightly less than c. slightly greater than c. much greater than c.
Exactly C ; two spaceships approaching each other move at very close to the speed of light, each sending a beam of light to the other. each measures the speed of light from the other spaceship is 'C'.
A fundamental physical constant, typically abbreviated as c, the speed of light in a vacuum is significant in many branches of physics. 299,792,458 meters per second is the precise speed of light, or c. (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour). [Note 3] The special theory of relativity states that the maximum speed at which ordinary matter or energy (and thus any signal carrying information) may move across space is c.
Including visible light, all types of electromagnetic radiation move at the speed of light. Light and other electromagnetic waves will appear to propagate instantly for many practical uses, but for very sensitive measurements over great distances, their finite speed has noticeable impacts.
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a sled with mass 11.00 kg moves in a straight line on a frictionless horizontal surface. at one point in its path, its speed is 2.00 m/s; after it has traveled a distance 4.00 m beyond this point, its speed is 7.00 m/s.
A sled with mass 11.00 kg moves in a straight line on a frictionless horizontal surface. at one point in its path, its speed is 2.00 m/s; after it has traveled a distance 4.00 m beyond this point, its speed is 7.00 m/s. The magnitude of the force acting on the sled is 61.874 newtons.
What is Work- energy theorem?
The Work-Energy Theorem states that the work done by the external force applied on the sled (W), in joules, is equal to the change of its translational kinetic energy (ΔK), in joules:
W = ΔK
By definitions of work and translational kinetic energy we expand the equation above:
F . s = [tex]\frac{1}{2}[/tex] .m. (υ₂² - υ₁²)
Where:
F - External force applied on the sled, in newtons.
s - Travelled distance, in meters.
υ₂,υ₁ - Initial and final velocities, in meters per second.
And we know that, m = 11 kg, υ₁= 2 m/s, υ₂ = 7 m/s, s= 4 m
F = m(υ₂² - υ₁²) / 2.s
= 11 ( 7² - 2² ) / 2 × 4
F = 61.874 Newtons.
Thus, the force can be found as 61.874 Newtons.
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the concepts of work, power, and impulse are all related to momentum and energy transfer. Which of the following are scalars (as opposed to vectors)? Multiple Select :
1) Work
2) Impulse
3) Power
A mathematical science is physics. The fundamental ideas and precepts have a mathematical foundation.
What is scalar quantity?In the course of studying physics, we will come across a wide range of ideas that have mathematical foundations. While the conceptual nature of physics will frequently be the focus, its mathematical component will receive extensive and ongoing attention.
It is possible to express in words how an object moves. There are many terminologies that can be used to describe moving objects, even for those without a background in physics.
A adequate vocabulary for expressing the motion of objects is provided by words and expressions like "moving quickly," "stopped," "slowing down," "speeding up," and "turning." These and numerous other words are used in physics.
Therefore, A mathematical science is physics. The fundamental ideas and precepts have a mathematical foundation.
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Two airplanes are flying in the sky in such a way that the gravitational attractions between them decreases. The planes must be flying.
The planes must be flying because of earths gravity when two airplanes are flying in the sky in such a way that the gravitational attractions between them decreases.
In mechanics, gravity—also known as gravitation—is the constant force of attraction that pulls all matter together. It has no impact on determining the internal characteristics of common matter because it is by far the weakest known force in nature.
All objects on Earth experience weight, or a gravitational pull that is proportional to their mass and is imposed by the planet's mass. The acceleration that gravity gives to objects falling freely serves as a gauge of its strength. The acceleration of gravity at Earth's surface is approximately 9.8 meters per second. As a result, during free fall, an object's speed increases by about 9.8 meters per second. A freely falling body accelerates to about 1.6 m/s2 at the Moon's surface.
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an object is 15 mm in front of a converging lens, and the image is 4.0 mm behind the lens. what is the focal length of the lens?
3.1578 MM is the focal length of the lens when the image is 4.0 mm behind the lens and the object is 15 mm in front of the converging lens. the length of an optical system's focus point.
Is a measurement of the degree to which the system strongly diverges or converging lens; it is the opposite of the system's optical power. A system's light converges when the focal length is positive, while it diverges when the focal length is negative. The optical centre or axis of a convergent lens is where light is focused. a lens that creates convergent light rays from parallel light rays. Is called converging lens.
If is the lens's focal length, then the calculation for its length is as follows:
1/f = 1/u+1/v = 19/60
f = 60/19 = 3.15789 mm
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What are the similarities and differences between concentrated solar power and concentrated photovoltaics?.
Concentrated Solar Power (CSP) and Concentrated Solar Power (CPV) are two types of solar energy technologies that are used to generate electricity.
The most obvious difference between CSP and CPV is the method used to convert sunlight into energy. Concentrated Solar Power works by using mirrors or lenses to concentrate sunlight onto a receiver that absorbs the heat and then uses it to produce steam. The steam is then used to power a turbine, which in turn generates electricity. CPV, on the other hand, uses photovoltaic cells to directly convert sunlight into electrical current.
The efficiency of CSP and CPV also varies significantly. CSP is generally more efficient than CPV, as it can capture a wider range of the electromagnetic spectrum from sunlight and convert it into energy. However, Concentrated Solar Power can be more efficient in terms of the amount of energy it produces per unit area, due to its ability to concentrate light onto a smaller area.
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select all the true statements about the dependence of extrusion force on die angle in direct extrusion. group of answer choices the total force increases with increasing die angle. the force required for redundant deformation increases with increasing die angle. the ideal force (assuming no redundant deformation and no friction) remains constant with changing die angle. the friction force at the billet-die interface increases with increasing die angle.
The statement that is true about the dependence of extrusion force on die angle in direct extrusion are:
The ideal force (assuming no redundant deformation and no friction) remains constant with changing die angle.The force required for redundant deformation increases with increasing die angle.An extrusion force can be applied to push the charge against the die. In practice either the die or the charge may rotate or they may be counter-rotating. The relative rotary motion between the charge and the die has several significant impact on the process. The primary factors that influence the extrusion force are: metal deformation resistance during extrusion, deformation degree (extrusion ratio), extrusion speed, friction conditions between the billets and die contact surface, extrusion die angle, product section shape, billets length and extrusion method.
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a car with mass m 1500 kg travels at a speed of 90 kmh then brakes to a stop how much mass should the brakes have
The brakes have 468750KJ
What is speed?The speed at which an object's location changes in any direction. The distance traveled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity.
Given mass of car =1500kg
u=speed=90km/hr=90× 5 /18m/sec
u=25m/sec
it have to stop in 5sec
then final velocity =0
⇒v=u+at
o=25+a×5
=a=−5m/sec ^2
then the force applied by break is ma
=1500X−(5m/sec^2)
=−7500M
force =7500N by break
distance travelled to stop the car after break is applied (s=distance)
v ^2=u ^2+2as
0=(25) ^2−2×5×s
=s= (25) ^2 /10
=62.5m
work done by break =F×s
w=7500×62.5=468750KJ
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consider an element that reaches its first excited state by absorption of 348.9 nm light.348.9 nm light. determine the energy difference in kilojoules per mole between the ground state and the first excited state.
The 348.9 nm light is the light energy and energy difference's in K J /moles between excited and ground states is 343.0 KJ/mol.
Here we have 348.9 nm light :
[tex]ΔE = E1 - E0 \\ΔE = hc/ lambda \\h= 6.626 ×10^34\\c = 3 × 10 ^8\\lambda = 348.9 nm\\ΔE = hc/ lambda = 6.626 ×10^34×3 × 10 ^8÷348.9 nm\\= 5.697 × 10^22 ×6.022 ×10^23 mol^-1 \\= 343.0 KJ /molTherefore the energy difference is 343.0 KJ /mol.[/tex]
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what volume of butane (C4H10) is required to produce 97.2 liters of water according to the following reaction? (all gases are at the same temperature and pressure.)
19.44 L volume of butane (C4H10) is required to produce 97.2 liters of water according to the following reaction.
What is Avogadro's Law ?The same quantity of any ideal gas will have the same volume at the same temperature and pressure, according to Avogadro's law. In other words, the volume is unaffected by the gas's composition. This is due to the fact that in ideal gases, the relative importance of each gas particle's size to the gas's overall volume is negligible (since the particles are so far apart from each other in the gaseous state).No of the size or molar mass of the gas, there are always the same amount of molecules or atoms in a given volume of a perfect gas. The mathematical formulation of Avogadro's Law is as follows: Where V is the gas's volume, n is its moles, and k is a proportionality constant, we get Vn=k.Given details :
First thing is you need a correctly balanced equation for this reaction:
2C4H10 + 13O2 ==> 8CO2 + 10H2O ... balanced equation
Since all are at the same temperature and pressure, the coefficients serve to not only tell us the moles of each, but also tell us the volume (liters) of each. Using dimensional analysis and the stoichiometry of the balanced equation, we can find the volume of C4H10 needed to produce 97.2 liters of H2O.
97.2 L H2O x 2 L C4H10 / 10 L H2O = 19.44 L of C4H10 required.
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What are the 3 Earth's internal heat?.
There are three primary sources of interior heat: (1) heat from the planet's formation and accretion, which has not yet been lost; (2) frictional heating brought on by the planet's denser core material sinking to the center; and (3) heat from radioactive element decay.
What is a brief explanation of heat?Heat is the movement of kinetic energy from a source of energy to a medium or an object, or vice versa. Absorption, conduction, & convection are the three possible pathways for this energy conversion.
What is heat in reality?In solids, liquids, and gases, the movement of microscopic particles known as atoms, molecules, or ions produces heat energy. One thing can impart heat energy onto another.
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two point masses are placed 10.0 cm apart and attract each other with a force of 10.0 n. find the force of gravitational attraction between the masses when they are placed 5.00 cm apart.
The final gravitational force after they are placed 5cm apart is 40 N.
We need to know about gravitational force to solve this problem. The gravitational force is the force caused by two masses objects. The magnitude of gravitational force can be determined as
F = G.m1.m2 / R²
where F is the gravitational force, G is the gravitational constant (6.674 × 10¯¹¹ Nm²/kg²), m1 and m2 are the mass of the object and R is the radius.
From the question above, we know that
Ra = 10 cm
Rb = 5 cm
Fa = 10 N
The gravitational force is inversely proportional to squared distance. Hence
Fa / Fb = Rb² / Ra²
10 / Fb = 5² / 10²
Fb = 40 N
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write an expression for the horizontal component of the system's initial momentum, pi,x, in terms of m, v1i and v2i.
When an object first begins to move, it has what is known as initial momentum. A mass moving at its initial velocity would have initial momentum.
How do you determine the starting momentum?Because the ball is moving to the left, we may use the equation pi=mvi p I = m v I to calculate the starting momentum, where m is equal to 1 kg and vi is equal to -7 m/s. -7 kgm/s to the left is the initial momentum. Locate the impulse and its course in step two.When an object first begins to move, it has what is known as initial momentum. A bowling ball's initial momentum, for instance, would be the ball's momentum immediately after the bowler releases the ball from his or her hand and starts rolling down the bowling alley.A mass moving at its initial velocity would have initial momentum.To learn more about Initial momentum refer to:
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Find the acceleration a of the particle. Express the acceleration in terms of vi , vf , and s.
The acceleration a of the particle, expressed in terms of vi , vf , and s, is a = (vf² - vi²) / (2s).
What is acceleration of a particle?
The acceleration of a particle is the rate of change of velocity of the particle with time.
Mathematically, the acceleration of any particle can be determined by applying the following kinematic equation.
a = (vf - vi)/t
where;
vf is the final velocity of the particlevi is the initial velocity of the particlet is time of motion of the particleWhen the final velocity of the particle is known, the initial velocity is also known and the distance travelled by the is known as well, then the acceleration of the particle can be calculated by applying the formula for third kinematic equation as shown below.
vf² = vi² + 2as
a = (vf² - vi²) / (2s)
Thus, the acceleration of the particle depends on the final velocity, initial velocity and the distance travelled by the particle.
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estimate the moment of inertia of a bicycle wheel 65 cm in diameter. the rim and tire have a combined mass of 1.1 kg .
The moment of inertia of a bicycle wheel of 65cm diameter and mass 1.1 kg is 0.116 Kg m^2.
What is moment of inertia?
Moment of inertia can be defined as the tendency of any object to remain in the state of rest or a constant rotational velocity which can be calculated by I = mr^2, where I is moment of inertia, m is mass and r is radius.
The moment of inertia of the bicycle wheel can be calculated as,
diameter of the bicycle wheel = 65 cm = 0.65 m
radius = d/2 = 0.65 m / 2 = 0.325 m
I = mr^2 = 1.1 Kg x (0.325m)^2 = 0.116 Kg m^2
Therefore the moment of inertia of the bicycle wheel is 0.116 Kg m^2.
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(part a) when the spring is stretched to its farthest position and the block comes momentarily to rest, how much potential energy is stored in the spring?
Although the spring force has a negative sign and is a restoring force, the elastic potential energy cannot be negative.
what is potential energy ?
Potential energy is the energy stored by an item as a result of its location relative to other objects, internal tensions, electric charge, or other reasons.
The gravitational potential energy of an item, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field are all examples of common forms of potential energy. The joule, denoted by the sign J, is the unit of energy in the International System of Units (SI). is the energy stored by an item as a result of its location relative to other objects, internal tensions, electric charge, or other reasons.
The gravitational potential energy of an item, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field are all examples of common forms of potential energy. The joule, denoted by the sign J, is the unit of energy in the International System of Units (SI).
Although the spring force has a negative sign and is a restoring force, the elastic potential energy cannot be negative. Positive potential energy is stored in the spring as soon as it is stretched or compressed.
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a tire has a tread pattern with a crevice every 2.00 cm. each crevice makes a single vibration as the tire moves. what is the frequency of these vibrations if the car moves at 24 m/s?'
The frequency of these vibrations if the car moves at 24 m/s is 1500 Hz
It is given that
Wavelength = 2.00 cm = 0.02 m
velocity = 24 m/s
Frequency = v x λ
Frequency = 0.02 x 24 = 1500 Hz
What is frequency ?Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as temporal frequency to emphasize the contrast to spatial frequency, and ordinary frequency to emphasize the contrast to angular frequency
Hence, the frequency of these vibrations if the car moves at 24 m/s is 1500 Hz
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Dr. Bennett decides to take a vacation to outer space. He finds a nice planet with a beach and stops for a while. He can't decide if he feels heavier or lighter here, 2250 so he makes a simple pendulum to measure g. The pendulum is 0.7 m long and completes 96 cycles in 114 seconds UNITS STATS HELP PREFERENCES NOTES Part IMAGES DISCUSS Description Answer Save Status 16.67 pts. 100% A. What is the value of g on this mysterious planet? |(include units with answer) # tries: 0 Show Details Format Check 2% try penalty Hints: 0,0
The value of accelration due to gravity on this planet is 19.59 m/s², so Dr. Bennett should feel heavier on this planet.
The length of the pendulum of Dr. Bennett is 0.7m.
The pendulum completes 96 cycles in 114 seconds.
So, we can write,
96 cycle = 114 seconds
1 cycle = 114/96 seconds.
Time taken by the pendulum to complete one cycle is the time period of the pendulum.
The time period of the pendulum is given by,
T = 2π√(l/g)
Putting values,
114/96 = 2π√(0.7/g)
g = 19.59 m/s².
The value of acceleration due to gravity on this planet is 19.59 m/s².
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dylan sits on a bar stool, with his feet off of the floor. the seat of the bar stool is free to rotate. dylan is holding a wheel (moment of inertia
The wheel has a significant angular momentum in its ultimate state, pointing vertically upward, thus the stool and pupil must both revolve in the opposite direction to achieve equality.
How do you utilize the Moment?The script approach of utilizing MomentJS allows you to utilize it inside a browser. It can be installed via npm and is also compatible with Node. js. You can easily add, subtract, verify dates, retrieve the maximum and minimum dates, and more with MomentJS.
What does a data moment mean?A set of characteristics used to evaluate a distribution is called a moment. There are four frequent moments: First, the mean, or average. Second, Variance The standard deviation, which shows how evenly the data are distributed around the mean, is determined using the square root times variance.
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Suppose you drop a book. As the book is falling to the ground, which of the following statements is true?A. The magnitude of the force that the Earth exerts on the book is larger than the magnitude of the force that the book exerts on the Earth B. Because the book is in free fall, there is no force between the Earth and book. C. The magnitude of the force that the Earth exerts on the book is smaller than the magnitude of the force that the book exerts on the Earth D. The magnitude of the force that the Earth exerts on the book is the same as the magnitude of the force that the book exerts on the Earth
The amount of force that the Earth applies to the book is more than the amount of force that the Earth applies to the book. There is no force holding the book to the Earth because it is falling freely.
What is force?
An external force is an agent that has the power to alter the resting or moving state of a body. It has a direction as well as a magnitude. The application of force is the point at which load is exerted, and the direction in which the forces are applied is known as that of the direction of the force. A spring balance can be used to calculate the Force. Newton is the SI unit of force (N).
The amount of force that the Earth applies to the book is less than the amount of force that the Earth applies to the book. While the table is exerting an upward response force on the book, the force that the Earth exerts on it is the same as the force that the book exerts on the Earth. The book doesn't move since the forces are equal and in opposition to one another.
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what is the radius of curvature of the path of the proton in the above question if the magnitude of the field is 0.80 t?
Proton route curvature has a 9.9mm radius of curvature.
Which magnitude do you mean?Magnitude is simply "distance or amount," according to the definition given in physics. It shows how an item moves while it is in motion, whether that movement is absolute, relative, or of a certain magnitude. It serves as a method to convey something is really size and scope. Magnitude is a broad term used in physics to describe size or distance.
What is an illustration of magnitude?Size can be described as magnitude. A automobile is travelling quicker than a bike, for instance, in terms of speed. The automobile is now moving faster than the bike in this situation by a significant margin. It communicates the absolute size or direction.
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a car moving at 12.0 m/s crashes into a tree and stops in 0.31 s. calculate the force the seat belt exerts on a passenger in the car to bring him to a halt. the mass of the passenger is 70 kg.
Answer:
[tex]\huge\boxed{\sf F=2709.7\ N}[/tex]
Explanation:
Given Data:Velocity = v = 12.0 m/s
Mass = m = 70 kg
Time = 0.31 s
Required:Force = F = ?
Formula:[tex]\displaystyle F=\frac{mv}{t}[/tex]
Solution:Put the given data in the above formula.
[tex]\displaystyle F = \frac{(70)(12)}{0.31} \\\\F=\frac{840}{0.31} \\\\F=2709.7 N\\\\\rule[225]{225}{2}[/tex]
from an astronomical perspective, where would be the best location to put a telescope? group of answer choices on a tall, dry mountain peak close to a large city where there are many astronomers to use it on the west coast of the u.s. very close to sea level (a location like seattle, for example) in a dark spot right on the campus
A tall, dry mountain peak close to a large city would be the best location to put a telescope.
A telescope is a device that focuses a significant amount of light through large-diameter lenses or mirrors to enable the observation of distant objects with extremely weak light.
The following factors must be considered while choosing a telescope's location:
The location must be far from cities and other bright light sources in order to ensure that no neighboring lights interfere with the observation.
To prevent fogging up of the optical surfaces and to lessen the thermal expansion that alters the length of the instrument, the climate should be as stable as possible with minimal temperature variations.
You must pick a location where there is little rain and thus little cloud cover.
We can determine which luxury will be the most appropriate based on these needs.
a) A lot of light is present in the area.
b) There is a lot of wind and humidity.
c) There is enough light.
d) The stable climate, low light levels, and low humidity make this a suitable location.
e) a lot of light and humidity.
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The figure shows a metallic block, with its faces parallel to coordinate axes. The block is in a uniform magnetic field of magnitude 0.018 T. One edge length of the block is 22 cm; the block is not drawn to scale. The block is moved at 2.3 m/s parallel to each axis, in turn, and the resulting potential difference V that appears across the block is measured. With the motion parallel to the y axis, V =17 mV; with the motion parallel to the z axis,V = 12 mV; with the motion parallel to the x axis, V = 0. What are the block lengths (a) dx, (b) dy, and (c) dz?
According to the given statement (a)dx = 22 cm (b) dy =28 cm (c) dz= 41 cm are the block lengths .
What is the mechanism of the magnetic field?While similar sides repel each other and, opposite polarities are attracted to one another. Iron's atoms' inland ends align in the right approximate direction when it is rubbed against a magnet. A magnetic field is produced by the force that the aligned ions produce.
Briefing:We observe that B must be along the x axis because there is no induced voltage when the velocity is along that axis.
Combining v = E /B and V = Ed leads to
Thus it is important to carefully read the symbols to make sure that d, v, and B are perpendicular to one another. The absolute value of the voltage, which is assumed to be in the same "direction" as d, is therefore 0.012V when the velocity is parallel to the y axis.
d = dz = 0.017 / (2.3 m.s)(0.018 T) = 0.41 m
On the other hand, the absolute value of the relevant voltage is 0.012V when the velocity is parallel to the Z axis, and
d = dy = 0.012 / (2.3 m.s)(0.018 T) = 0.28 m
(a)22cm (which we determine "by elimination," as we have already determined dy and dz),
(b)dy = 28 cm
(c)dz = 41 cm
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Which equation represents a line that passes through 4 1 and has a slope of?.
The equation that represent the line is 9x - 12 y =32
We are given that ,
x₁ = 4, y₁= 1/3 , m = 3/4
Where,
m = slope of the line
Then the equation of line can be given as,
(y - y₁) = m (x - x₁)
3y -1 = 9/4 (x-4)
12 y - 4 = 9x - 36
9x - 12y = - 4 + 36
9x - 12y = 32
note- the given questions is incomplete therefore the complete question is,
Which equation represents a line that passes through (4, 1/3) and has a slope of 3/4
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