(a) The speed and direction of travel of the wave is 7 m/s positive x-direction.
(b) The vertical position of an element of the string at t = 0, x = 0.178 m is -3.1 m
(c) The wavelength of the wave is 2 m
(d) The frequency of the wave is 7 Hz
(e) The maximum transverse speed of an element of the string is 16.48 m/s.
The wave functionThe general function of the wave is:
y (x, t) A sin (kx - ωt)
We have, y(x, t) = 0.375 sin (14[tex]\pi[/tex]t - 2[tex]\pi[/tex]x + [tex]\pi[/tex]/4)
So,
a. the speed and direction of travel of the wave:
v = ω/k
= 14/2
= 7 m/s ⇒ positive x-direction
b. The vertical position of an element of the string at t = 0, x = 0.178 m
y = 0.375 sin (-2[tex]\pi[/tex]x/14 + [tex]\pi[/tex]/4)
= -3.1 m
c. The wavelength of the wave:
λ = 4/2
= 2 m
d. The frequency of the wave
f = ω/2
= 14/2
= 7 Hz
e. The maximum transverse speed of an element of the string:
ωA
= 14π (0.375)
= 16.48 m/s
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how many times more powerful were the seismic waves of the nisqually earthquake than standard seismic waves?
The seismic waves of the Caracas earthquake were 3162277,66 times more powerful of the standard seismic waves.
What is seismic waves ?
An acoustic energy wave that moves through the Earth is known as a seismic wave. Large landslides, volcanic eruptions, magma movement, earthquakes, and man-made explosions that release a lot of low-frequency acoustic energy can all cause it.
By using formula given above, M= log(w/w_0), we can find
10^M= w/w_0, it means 10^M.w_0,= w
but M=6.5, so 10^6.5=3162277,66
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A parallel plate capacitor with circular plates of radius R = 16.0 cm and plate separation d = 9.00 mm is being charged at the rate of 8.00 C/s.
What is the displacement current through a circular loop of radius r = 21.00 cm centered on the axis of the capacitor? 8.00 You are correct.
What is the displacement current through a circular loop of radius r = 3.00 cm centered on the axis of the capacitor?
What is the magnitude of the magnetic field between the capacitor plates at a radius r = 3.00 cm from the axis of the capacitor?
Part a: Displacement current: I(d1) = 8 ampere.
Part b: displacement current: I(d2) = 2.812 x 10⁻¹ A.
Part c: magnetic field at a r = 3 cm radial distance: 1.875 x 10⁻⁶ T.
Explain the term Displacement Current?The electric field that exists between both the capacitor plates stores energy in capacitors. A current known as displacement current forms between the capacitor plates if the electric field between them is continuously changing.Part a: Displacement current within the 21 cm-radius circular loop.
Since the capacitance plate has a 16 cm radius, the current can only flow in a loop of this size, or the total displacement current flows within a loop with a 21 cm radius.
Displacement current;
I(d1) = ∈₀.dФ(e)/dt
I(d1) = ∈₀ x A x (Qr.d/∈₀.A.d)
I(d1) = Qr
I(d1) = 8 C/s
I(d1) = 8 ampere of Displacement current.
Part b: displacement current flowing through a 3 cm-diameter circular loop
Density of the displacement current;
Jd = I(d1)/A
Jd = 8/(8.042 x 10⁻²)
Jd = 99.478 A/m²
For the radius r, area of loop
A1 = πr²
A1 = 3.14 x (0.03)²
A1 = 2.827 x 10⁻³ m²
Thus, displacement current;
I(d2) = Jd x A1
I(d2) = 99.478 x 2.827 x 10⁻³
I(d2) = 2.812 x 10⁻¹ A.
Part c: magnetic field at a r = 3 cm radial distance.
Field of magnetism:
B = μ₀.I(d2) / 2πr
B = 4π x 10⁻⁷ x 2.812 x 10⁻¹ / 2π x 0.03
B = 1.875 x 10⁻⁶ T
Thus, magnetic field at a r = 3 cm radial distance is 1.875 x 10⁻⁶ T.
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what is the strength of an electric field that a 0.010 c negative charge experiences 0.90 mm from a 0.20 c positive charge?
The strength of an electric field that a 0.010 C negative charge experiences 0.90 mm from a 0.20 C positive charge is 2.22* 10¹⁷ N/C.
Given that,
Value is positive charge = 0.2 C
Distance of positive charge from 0.01 C negative charge is,
x₀ = 0.09 mm = 0.09 * 10⁻³ m
The expression for the strength of electric field that a 0.010 C negative charge experience from positive charge is,
E₀ = (k* Qₐ)/x₀² = (9* 10⁹* 0.2)/(0.09 * 10⁻³)² = 2.22* 10¹⁷ N/C
Thus, the strength of electric field that a 0.010 C negative charge experience form positive charge is 2.22* 10¹⁷ N/C.
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In the Doppler effect it Is important to distinguish between frequency and speed. speed and velocity: speed and acceleration: distance and displacement
In the Doppler effect, the important things to distinguish between are frequency and velocity (speed).]
Doppler effect is the frequency change of a wave in relation to an observer that is moving relative to the source of the wave. It happens because when the source of the waves is moving towards the observer, each wave crest is emitted in a closer position to the observer than the previous wave. That makes each wave takes less time to reach the observer compared to the previous wave, causing an increase in frequency.
Since the Doppler effect is all about frequency change and a moving object is involved in it, it's important to distinguish between wave frequency and the speed the object is moving in.
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Which of the following objects has the smallest radius? Select an answer and submit: For keyboard navigation, use the up/down arrow keys to select answer
a. 0.9 solar mass white dwarf
b. 1.2 solar mass white dwarf
c. 1.6 solar mass neutron star
d. 1.9 solar mass neutron star
0.9 solar mass The radius is smallest for a white dwarf. A common unit of mass used in astronomy is the solar mass, which is roughly 2 10 kg. It is frequently employed to denote the masses of other stars.
Including black holes, galaxies, nebulae, star clusters, and more. In other words, the atomic radius is smaller because the electrons are being drawn closer to the nucleus by a stronger force of attraction. Additionally, anions are larger than their corresponding atoms due to electron-electron repulsion, which causes them to spread apart. It follows that Cl has the shortest radius. Almost every aspect of a star, including its brilliance, size, evolution, longevity, and ultimate fate, is governed by its starting mass.
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the worker's pull on the handle of the cart can best be described as a force having a a horizontal component , only b a vertical component , only c a horizontal and a vertical component d no directional component
The worker's pull has both the horizontal and the vertical component that is : both magnitude and direction.
Why would the force have horizontal and vertical component ?Draw the force vector graphically, then a horizontal and vertical line that forms a right triangle. It is possible to measure the connections between the horizontal and vertical lines graphically or alternatively by computation.
In mechanics, horizontal and vertical components are frequently seen.
Two forces that are mutually perpendicular to one another can be used to break down a force acting in one direction into its component parts.
Thus we will get the two components the vertical component being the N that is normal and the horizontal component is f = friction.
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16.A single disturbance that moves from point to point through a medium is called a period b) periodic wave wavelength pulse 17.When the particles of a medium are vibrating at right angles t0 the direction of energy transport, then the wave is a wave. longitudinal sound standing transverse 18.What is the amplitude of the wave in the diagram on the right? a) 0.03 m b) 0.04 m 0.05 m 0.06 m 19.Sound wave is a type of Longitudinal wave Transverse wave 20.A 10 Hz wave has a 2.2 cm wavelength. The velocity of the wave is a) 4.5 cmls b) 7.8 cmls c) 12 cmls 22 cmls
Water can carry waves, glass can transmit light, and walls can carry sound. The medium is the substance that a wave travels through. A pulse is a single disturbance that moves through a medium.
What is a single disturbance that travels through a medium from point to point?
An isolated disturbance called a pulse travels through a medium from one point to the next.
A recurring disruption in a medium is what?
A wave is an energetic periodic disturbance that propagates outward from a source. Waves can be either mechanical or electromagnetic. Mechanical. Examples -- sound waves, water waves, etc. require a medium for transfer; vacuums cannot be used for transfer.
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the wing of an airplane has an average cross-sectional area of 11 m2 and experiences a lift force of 74,000 n. what is the average difference in the air pressure between the top and bottom of the wing?
The average difference in the air pressure between the top and bottom of the wing is 6545.45 Pa.
Pressure = Force / area
force = 72000 N
Area = 11m2
Difference = Force difference / area
=72000/11 N/m 2
= 6545.45 Pa
Pressure:
The force applied physically to an object is referred as the pressure. Per unit area, the force is applied perpendicularly to the surfaces of the objects. The fundamental pressure formula is F/A. (Force per unit area). The Pascal unit of pressure (Pa). The four different types of pressure are gauge, absolute, atmospheric, and differential.
Complete question:
The wing of an airplane has an average cross-sectional area of 11 m2 and experiences a lift force of 72,000 N. What is the average difference in the air pressure between the top and bottom of the wing?
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the primary coil of a transformer has n1 5 350 turns, and the secondary coil has n2 5 2 000 turns. if the input voltage across the primary coil is dv 5 170 cos vt, where dv is in volts and t is in seconds, what rms voltage is developed across the secondary coil?
The rms voltage developed in secondary coil is 971.42 volt.
A transformer is the simplest device used to transfer electrical energy from one AC circuit to another through the process of electromagnetic induction. A transformer either increases AC voltage (step-up transformer) or decreases AC voltage (step-down transformer). Transformers, which are typically used to transmit and distribute AC power, are essentially voltage regulators. Transformers serve a variety of purposes, such as stepping up the voltage of generators to transmit power over long distances, or stepping down the voltage of traditional electrical circuits to power low-voltage devices such as doorbells and toy trains.The term RMS is an abbreviation for Root Mean Square. RMS voltage is defined as the square root of the mean square of the instantaneous value of the voltage signal. The rms value is also called the root mean square. RMS voltage can also be defined as the integral of the square of the instantaneous value during a cycle of continuously varying voltage.
[tex]\frac{V2}{V1}=\frac{N2}{N1}[/tex]
V2= 2000 x 170/350=971.42 volt
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a tire has a tread pattern with a crevice every 2.25 cm. each crevice makes a single vibration as the tire moves. what is the frequency (in hz) of these vibrations if the car moves at 27.2 m/s?
The each crevice makes a single vibration as the tire moves. what is the frequency (in hz) of these vibrations if the car moves at 27.2 m/s Frequency =1208.9 Hz
From the question, we have
speed = 27.2 m/s = 2720 cm/s
The tire has a tread pattern with a crevice every 2.25 cm
frequency = 2720/2.25
=1208.9 Hz
Frequency :
The quantity of waves that pass a set location in a predetermined period of time is known as frequency. Therefore, if a wave passes through in half a second, the frequency is 2 per second. The frequency is 100 times per hour if it takes 1/100 of an hour. The frequency of the wave is the sum of all waves generated in a second. Frequency is the measure of how many vibrations occur per second. Here is a straightforward illustration: The frequency of the waves will be 5 hertz (Hz) or 5 cycles per second if five full waves are created in one second.
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light incident normally on a thin film of glycerine which coats a thick glass plate, refractive index 1.55. in the resulting reflections, completely constructive interference is observed at 440.0 nm and completely destructive interference is seen at 352.0 nm. take the refractive index of glycerine as 1.31, calculate the thickness of the film.
The refractive index of glycerine as 1.31 and the thickness of the film is 0.808 μm
Light incident normally on a thick glass plate covered in a thin layer of glycerine with a refractive index of 1.55
Δθ=2Πn₂t/λ + Π-Π
Δθ=4Πn₂t/λ
For constructive interference
refractive index of glycerine is 1.31
Δθ=2mΠ
2mΠ=4Πn₂t/λ1
t=mλ1/2n2=970m/2*1.2
For destructive interference
ΔΘ=(2m+1)Π
4Πn₂t/λ₂=(2m+1)Π
t=(2m+1)λ2/4n₂
2*2.4/970+1=4*1.2/776t
0.001237t=1
t=808.33 nm
Thickness is =0.808 μm
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using the travel time curve you have printed from the course content (note: each division between the minutes is 20 seconds): if the time difference between the first arrival of p waves and the first arrival of s wave is 4 minutes 10 seconds, what is the approximate distance to the epicenter?
Using travel time , the distance of wave to epicenter is 7.5 x 10¹⁰m.
Dr. Robert Butler briefly described how to use seismic travel time curves. You can observe P- and S-wave arrivals on a seismogram and calculate how far the earthquake was from your station. A travel time curve is a plot of arrival times, usually of a P or S wave, recorded at various points as a function of distance from the seismic source. Seismic velocities in the ground can be calculated from the slopes of the resulting curves.A seismic wave traveling through an isotropic homogeneous medium will propagate at a constant speed. Thus, the time required for a seismic wave to travel from source to receiver in a homogeneous earth layer with velocity is simply given by the formula t=d/v , where is the distance traveled in the layer. In a seismic survey, we measure the travel times between the source and the receiver and use this data to estimate the properties of the subsurface. Basic seismic interpretation methods assume that the Earth is composed of a series of uniform layers and attempt to calculate the thicknesses, velocities, and sometimes dips of each layer. We will discuss specific techniques for calculating layer thicknesses and velocities in the reflection and refraction survey sections.D=vt
1 min =60 sec
4min= 60x 4=240 sec
Total time difference=240+10=250sec
D=3 x 10⁸ x 250=7.5 x 10¹⁰m
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a satellite s is in an elliptical orbit around a planet p, as shown above, with r1 and r2 being its closest and farthest distances, respectively, from the center of the planet. if the satellite has a speed v1 (a) at its closest distance, what is its speed at its farthest distance?
A satellite s is in an elliptical orbit around a planet p, as shown above, with r1 and r2 being its closest and farthest distances, respectively, from the center of the planet
(R1/R2)V1 is its speed at its farthest distance.
The rate of change in position of an object in any course.Speed is measured because the ratio of distance to the time wherein the distance became included. Speed is a scalar amount because it has handiest route and no significance.
Velocity can be notion of as the rate at which an object covers distance. A quick-moving object has a high speed and covers a notably big distance in a given amount of time, whilst a sluggish-shifting item covers a relatively small amount of distance in the same amount of time.
The primary unit or the S.I. unit of velocity is m/s or ms?¹.
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electrons are made to flow in a wire when there is * 1 point a)an imbalance of charges in the wire b)a potential difference across its ends. c)resistance difference across its ends d) magnetic force difference across its ends
When there is a * 1 point difference in resistance across the ends of a wire, electrons start to flow through it.
What causes the direction of electron flow?From the negative terminal to the positive terminal, electrons move through the conductor. The negative terminal repels them, whereas the positive terminal attracts them.
What causes the free movement of electrons?The particles are positioned closely together and in a predictable sequence. Metal atoms' unbound outer electrons surround the tightly packed positive ions in a "sea" of delocalized or free negative charge. These free electrons are referred to as free electrons. They have unrestricted movement throughout the metallic building.
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a 1000-turn coil of wire 1.0 cm in diameter is in a magnetic field that increases from 0.10 t to 0. 30 t in 10 ms. the axis of the coil is parallel to the field. what is the voltage induced in the coil?
The coil of wire's EMF is E = 1.57.
We are given;
Wire's number of turns; N = 1000 turns
The wire's diameter is 1 cm (0.01 m).
Radius; r = 0.01/2 = 0.005 m
Initial magnetic field strength; B1 = 0.10 T , Final magnetic field strength; B2 = 0.30 T
Time; Δt = 10 ms = 10 × 10⁻³ s
We are told that the axis of the coil is parallel to the field. This implies that the EMF will be maximum and θ = 0
According to Faraday's law of induction, the maximum induced EMF of the coil is expressed as;
E = N(Δ∅/Δt)
Where;
E is induced EMF
Δ∅ is change in magnetic flux
Δt is change in time
N is number of turns of coil
Now, Δ∅ = (B₂ - B₁)Acos θ
Since θ = 0°, then cos θ = 1. Thus;
Δ∅ = (B₂ - B₁)A
A is area = πr² = π(0.005²)
Thus;
E = (1000 × (0.3 - 0.1) × π(0.005²))/(10 × 10⁻³)
E = 1.57 V
What happens when a coil is in a magnetic field in a straight line?The induced current is 0 when the rectangular coil is perpendicular to the magnetic field's direction. It's because the cross-section of the coil basically has zero or no magnetic field lines connected to it.
What is the induced emf when the coil's plane is parallel to the field?The magnetic flux change is greatest when the coil plane is parallel to the magnetic field, and it is zero when the coil plane is normal to or perpendicular to the magnetic field, resulting in the maximum and smallest emf values, respectively.
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what will a spring scale read for the weight of a 55-kg woman in an elevator that moves (a) upward with constant speed of 6.0 m s,
if you're already moving at 3 m/s2, you add it to gravity (9.8) to get 12.8, or 9.8+3. Apply Hooks' Law F=K*X. Force given that K=2700 n/m, and since, F=ma, F=60*12.8=768N. ΔX=F/K 768/2700= .284m
What force is at play when you attach something to the spring scale?The gravitational pull of an object's mass determines its weight. A spring balance is what we use to assess weight. When weight is linked to a spring balance, the downward force will stretch the spring inside the balance since weight is the downward force that arises from the pull of gravity on an object.
Can you use a spring balance to measure weight?A simple and affordable way to determine mass is by using spring balances. The mass is suspended from the end of the spring, and the spring's deflection as a result of the mass's downward gravitational pull is measured in relation to a scale.
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Identify whether each item would increase or decrease stroke volume. Increase Stroke Volume Decrease Stroke Volume Sympathetic stimulation Increasing EDV Increasing afterload Increasing contractility Increasing preload Increased heart rate Stress Increasing contractility Dehydration Dehydration Decreased venous Teturn Sympathetic stimulation Increasing EDV Stress Acute exercise Increasing afterload Increased heart rate, Acute exercise Decreased venous retum Increasing preload Reset
Increasing contractility Dehydration Dehydration Decreased venous Teturn Sympathetic stimulation Increasing EDV Stress Acute exercise Increasing afterload Increased heart rate.
In which case hypertension increased?Hypertension increases afterload causing stroke volume to decrease. Hypertension refers to high or increased blood pressure. The afterload refers to the arterial pressure into which the stroke volume is ejected by the heart.
This is due to the fact that the aortic valve can not open unless the pressure generated in the left ventricle is higher compared to the elevated blood pressure in the aorta.
Therefore, Increasing contractility Dehydration Dehydration Decreased venous Teturn Sympathetic stimulation Increasing EDV Stress Acute exercise Increasing afterload Increased heart rate.
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a certain heat engine operates between temperatures of 20 oc and 200 oc. what is the maximum possible efficiency this engine can achieve? express your answer as a percentage.
This engine may operate at a maximum efficiency of 44.58%.
Given the facts,Efficiency = (T1 - T2/T1) 100 T1= 400+273 =673K T2 = 100 +273 =373K
Efficiency is equal to (673 - 373/673)100
(300 100)/673 = 44.58%.
How much productivity is ideal?The phrase "maximum efficient rate" refers to the highest sustainable daily oil or gas output from a reservoir that will allow for economic growth and reservoir depletion without compromising the ultimate recovery.
What is the highest potential theoretical efficiency for an engine?The phrase "theoretical" refers to something that is not actually possible. Real automotive engines often operate at efficiency of around 30%. a measure of the system's energy dispersion
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1. the wavelength of a particular color of violet light is 414 nm. calculate the frequency of this color.
The violet color has a frequency of 7.24 x (10)^14 / sec based on the wave length provided.
What wavelength is it?A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent emblems) in the consecutive cycles. This length is typically defined in wireless systems in metres (m), centimeters (cm), or millimeters (mm) (mm).
Briefing :we know that, f = frequency = 1/wavelength = c/λ
where c = speed of light = 299 792 458 m / s or 3 x 10^{8} m/s
and given wavelength ( λ)=414 nm
1 nm = 10^{-9} m
so, λ= 414 x 10^{-9} m
therefore f= frequency= 7.24 x (10)^14 / sec.
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An 1640 kg car stopped at a traffic light is struck from the rear by a 820 kg car. The two cars become entangled, moving along the same path as that of the originally moving car. If the smaller car were moving at 25.6 m/s before the collision, what is the velocity of the entangled cars after the collision?
(a) What is the loss of kinetic energy (Ki - Kf) in the situation described in the example?
kJ
(b) What if the 820 kg car actually moves backwards with a speed of 1.9 m/s right after the collision instead of having a perfectly inelastic collision. What is the velocity of the heavier car immediately after the collision? Use the same convention for positive direction as defined in the example.
m/s
(c) What is the loss of kinetic energy in this case?
kJ
(a.i) The velocity of the entangled cars after the collision is 8.53 m/s.
(a.ii) The loss in kinetic energy of the situation described is 179,201.7 J.
(b) The final velocity of the heavier car if the smaller car moved backwards is 11.85 m/s forward.
What is the final velocity of the cars after the collision?
The final velocity of the cars after the collision is calculated by applying the principle of conservation of linear momentum as shown below.
m₁u₁ + m₂u₂ = v(m₁ + m₂)
where;
m₁ is the mass of the smaller carm₂ is the mass of the bigger caru₁ is the initial speed of the smaller caru₂ is the initial speed of the bigger carv is the final speed of the cars820(25.6) + 1640(0) = v(820 + 1640)
20,992 + 0 = 2460v
v = 20,992 / 2460
v = 8.53 m/s
The lost in kinetic energy of the situation described is calculated as follows;
ΔK.E = K.Ei - K.Ef
K.Ei = ¹/₂m₁u₁² + ¹/₂m₂u₂²
K.Ei = ¹/₂(820)(25.6)² + ¹/₂(1640)(0)²
K.Ei = 268,697.6 J
K.Ef = ¹/₂(m₁ + m₂)v²
K.Ef = ¹/₂(1640 + 820)(8.53)²
K.Ef = 89,495.91 J
ΔK.E = K.Ei - K.Ef
ΔK.E = 268,697.6 J - 89,495.91 J
ΔK.E = 179,201.7 J
The final velocity of the heavier car if the smaller car moved backwards is calculated as;
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
where;
v₁ is the final velocity of the smaller carv₂ is the final velocity of the heavier carm₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
820(25.6) + 1640(0) = (820)(-1.9) + 1640(v₂)
20,992 = 1558 + 1640v₂
1640v₂ = 19,434
v₂ = 19,434 / 1640
v₂ = 11.85 m/s
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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
a plane electromagnetic wave with wavelength 500 nm travels in free space in the direction ( 3/2, 1/2, 0) with its electric field ~e, of amplitude 200 v/ m, traveling along the z direction. write the expressions for the electric and magnetic fields associated to this wave.
v = λf. Any electromagnetic wave traveling across empty space will travel at the speed of light, which is 3*108 m/s.As long as f = c, electromagnetic waves can be of any wavelength or frequency.
How is the path of an em phenomena determined?An E&M wave's direction of propagation can be determined by pointing the right hand's fingers in the direction of the field, curling them in the direction of magnetic field, then pointing the thumb in that direction.
What long does it take an electromagnetic signal to move one meter through empty space?In vacuum, all electromagnetic waves move at the same speed.About 300 million metres every sec (3.0 x 108 m/s) is what is known as the speed of light.
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The reactivity phenomenon of self-monitoring procedures has been shown to
O increase desired behaviors,
O decrease undesired behaviors.
O both increase desired behaviors and decrease undesired behaviors.
O neither increase desired behaviors nor decrease undesired behaviors.
The reactivity phenomenon of self-monitoring procedures has been shown to Option C:both increase desired behaviors and decrease undesired behaviors.
Self-monitoring, a term coined by Mark Snyder in the 1970s, refers to the degree to which individuals keep an eye on how they come across, how they act expressively, and how they act emotionally nonverbally. According to Snyder, human beings generally differ significantly in their capacities and motivations for engaging in expressive controls (see dramaturgy).
Self-monitoring is a personality feature that is used to describe the capacity to control conduct to meet social circumstances. In order to assure proper or desired public appearances, people who are concerned with their expressive self-presentation (see impression management) prefer to pay great attention to their audience. Self-monitors make an effort to comprehend how other people and groups will view their behaviour. Some personality types commonly act spontaneously (low self-monitors) and others are more apt to purposely control and consciously adjust their behavior (high self-monitors).
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Different masses are hung on a spring scale calibrated in Newtons.
W(weight) = Given mass in Kg X Gravitational force (9.8 N/Kg)
a. The force exerted by gravity on 1 kg = 9.8 N.
b. The force exerted by gravity on 5 kg = ______ N.
c. The force exerted by gravity on _______ kg = 98 N.
d. The force exerted by gravity on 70 kg = ________ N.
Answer:
2121 newtons
Explanation:
Different masses are hung on a spring, then the different values obtained after solving are 49 N, 10 kg, and 686 N.
What is gravity?The fundamental force of attraction operating on all matter is recognized as gravity, also spelled gravity, in mechanics. It has no impact on identifying the interior properties of common matter because it is the weakest force known to exist in nature.
The formation and growth of planets, galaxies, and the universe are all under the influence of this long-range, cosmic force, which further determines the trajectories of objects throughout the universe and the entire universe.
As per the given information in the question,
1 kg = 9.8 N
(b)
5 kg = 5 × 9.8
5 kg = 49 N
(c)
x kg = 98 N
x = 98/9.8
x = 10 kg
(d)
70 kg = 70 × 9.8
70 kg = 686 N.
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two objects attract each other with a gravitational force of magnitude 1.02 10-8 n when separated by 20.2 cm. if the total mass of the two objects is 5.06 kg, what is the mass of each?
The mass of each objects are 4.988 kg and 0.01202 kg.
First, its force-mediating boson is immaterial, just as a photon (the electromagnetic force's force-mediating boson) is immaterial. Massless bosons can carry force a long way. Both EM and gravitational forces follow an inverse square law (force is proportional to 1/r^2, where r is the distance between the centers of gravity). In contrast, the strong and weak nuclear forces have boson that carry matter, and their range is extremely short.Second, there is no "repulsive" mode of gravitational force. The electromagnetic force comes in both attractive and repulsive polarities, and since matter is generally charge neutral, the two cancel out almost perfectly at great distances. But gravity is only attractive, so it keeps adding up. As a result, it can reach far.Now the force weakens with increasing distance, meaning it needs more "action time" for any given change in the object's motion to occur. But on interplanetary and even interstellar scales, there is plenty of time for small changes per second to add up.M = -b/(2a) +-√((b/(2a))^2 -c/a)
M = 2.5 +-√(6.25 -0.05997)
M = 2.5 +-2.4879
M = 4.988 kg and 0.01202 kg
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CAN SOMEONE HELP ME WITH QUESTION d PLEASE I NEED ASAP
Answer:
Below
Explanation:
'Thermistor' is a Thermal Resistor .... the resistance of the thermistor changes with the temperature. The most common type has an increasing resistance as the temperature decreases. ( There are thermistors that have a DECREASE as temp drops) . This changing resistance will change the amount of current through the thermistor and the voltage drop across it .
when a 58 g tennis ball is served, it accelerates from rest to a speed of 45 m/s. the impact with the racket gives the ball a constant acceleration over a distance of 44 cm. what is the magnitude of the net force acting on the ball?
A 58 g tennis ball is served and accelerates from rest to a speed of 45 m/s. The net force acting on the ball is 133.5 N
The problem can be solved by applying the Newton 2nd Law of motion:
F = ma
Where:
F = force applied
m = mass
a = acceleration
We need to find the acceleration first using the motion equation:
v² = u² + 2as
where:
v = final velocity
u = initial velocity
s = distance
In this case u = 0 since the ball is initially at rest.
s = 44 cm = 0.44 m
Hence,
45² = 2 x a x 0.44
a = 2,301 m/s
Substitute into the Newton''s Law:
m = 58 gram = 0.058 kg
F = 0.058 x 2,301 = 133.5 N
There, the required force is 133.5 N
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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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Can someone help with this
The mass (in Kg) of the elevator, given that it is moving with a constant speed of 2 m/s is 600 Kg
How do I determine the mass of the elevator?We'll begin by obtaining the force. This can be obtained as illustrated below:
Power = 12000 WVelocity = 2 m/sForce =?Power = Force × Velocity
12000 = Force × 2
Divide both sides by 2
Force = 12000 / 2
Force = 6000 N
Finally, we shall determine the mass of the elevator. This can be obtaiend as follow:
Force = 6000 NAcceleration due to gravity (g) = 10 m/s² Mass =?Force = Mass × acceleration due to gravity
6000 = Mass × 10
Divide both sides by 10
Mass = 6000 / 10
Mass = 600 Kg
Thus, the mass of the elevator is 600 Kg.
None of the options are correct.
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Guidlines for replenishing fuel during endurance events include
A. consume 30 to 60 grams of carbohydrate per hr
B. use only one type of carbohydrate to avoid gastrointestinal upset
C. use a protein supplement every 30 mins
D. avoid fluid during exercise
Carbohydrates are the nutrition that matters most during endurance activity. Your muscles and liver both contain glycogen, which is the body's preferred form of energy storage. These stockpiles run low and exhaustion comes in when you exercise for more than 90 minutes.
What kinds of energy are required by endurance athletes?
For endurance sports, carbohydrates are frequently the preferred fuel source, so they take center stage in many athletes' nutrition programs. An additional source of carbohydrates is typically necessary to maintain peak performance because the body burns through its glycogen reserves, even at a pace below maximum
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