Sample Response: Digital signals do not pass noise along, so the sound heard is likely very close to the signal that was sent. Digital signals also can be stored more easily than analog signals. Recorded analog signals degrade over time, while recorded digital signals do not.
When Trinity pulls on the rope with her weight, Newton's Third Law of Motion tells us that the rope will _____
When Trinity pulls on the rope with her weight, Newton's Third Law of Motion tells us that the rope will "pull back".
Newton's third law of motion expresses that, at whatever point a first question applies a power on a second object, the first object encounters a power meet in extent however inverse in heading to the power that it applies.
Newton's third law of movement reveals to us that powers dependably happen in sets, and one question can't apply a power on another without encountering a similar quality power consequently. We once in a while allude to these power matches as "action-reaction" sets, where the power applied is the activity, and the power experienced in kind is the response (despite the fact that which will be which relies upon your perspective).
A particle moving in the x direction is being acted upon by a net force f(x)=cx2, for some constant
c. the particle moves from xinitial=l to xfinal=3l. what is δk, the change in kinetic energy of the particle during that time? express your answer in terms of c and l.
The change in kinetic energy during that time is : [tex]\frac{26}{3} cl^{3}[/tex]
Given data :
Direction of particle = x
Net force = F(x) = cx²
Initial position = l
Final position = 3l
Determine the change in kinetic energy during this timewe will apply the work energy theorem which is : ΔK = W
To determine change in kinetic energy we have to determine the work done on the particle.
Work done on particle ( W ) = [tex]\int\limits^3_l F({x}) \, dx[/tex] = [tex]\int\limits^3_l c{x^{2} } \, dx =[/tex] [tex]\frac{26}{3} cl^{3}[/tex]
Hence the change in kinetic energy during that time is : [tex]\frac{26}{3} cl^{3}[/tex]
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Two tuning forks of frequency 480 hz and 484 hz are struck simultaneously. what is the beat frequency resulting from the two sound waves?
A person drives to the top of a mountain. On the way up, the person’s ears fail to “pop,” or equalize the pressure of the inner ear with the outside atmosphere. The pressure of the atmosphere drops from 1.010 x 10^5 Pa at the bottom of the mountain to 0.998 x 10^5 Pa at the top. Each eardrum has a radius of 0.40 cm. What is the pressure difference between the inner and outer ear at the top of the mountain?
a.
1.2 x 10^3 Pa
b.
1.1 x 10^5 Pa
c.
1.0 x 10^2 Pa
d.
1.2 x 10^2 Pa
The pressure difference between the inner and outer ear at the top of the mountain is given by option a. 1.2 × 10³ Pa.
The pressure difference between the inner and outer ear at the top of the mountain can be calculated by evaluating the difference between atmospheric pressure at top and bottom of the lift. Let this difference be denoted as ΔP, then:
Δ P = P₁ - P₂
P₁ = pressure at the top of the lift = 1.010 × 10⁵ Pa
P₂ = pressure at the bottom of the lift = 0.998 × 10⁵ Pa
or, Δ P = (1.010 × 10⁵ Pa - 0.998 × 10⁵ Pa)
or, Δ P = 0.012 × 10⁵ Pa
or, Δ P = 1.2 × 10³ Pa
what are 3 adjectives that describe a super bowl crowd
Julius competes in the hammer throw event. The hammer has a mass of 7.26 kg and is 1.215 m long. What is the centripetal force on the hammer when it has a tangential speed of 31.95 m/s? The answer is rounded off to the nearest whole number. 190 N 840 N 1,400 N 6,100 N
Answer:
6,100 N
Explanation:
What mass of electrons would be required to just neutralize the charge of 4.8 g of protons?
The uniform bar of mass m and length l is balanced in the vertical position when the horizontal force p is applied to the roller at
a. determine the bar's initial angular acceleration and the acceleration of its top point
b.
What is a property of a transparent object?
the lowest pitched sounds humans can generally hear have a frequency of roughly 20 Hz. What is the approximate wavelength of these sound waves if their wave speed is 340 m/A?
"V = Frequency x Wavelength.
V = 340;
340 = 20 x Wavelength; divide both sides by 20.
Wavelength = 17"
Explanation:
describe the difference between mechanical and electromagnetic waves. Give an example of each kind of wave related to telecommunications.
An amusement park ride raises people high into the air, suspends them for a moment, and then drops them at a rate of free-fall acceleration. Is a person in this ride experiencing apparent weightlessness, true weightlessness, or neither? Explain.
Answer: apparent weighlessness.
Explanation:
1) Balance of forces on a person falling:
i) To answer this question we will deal with the assumption of non-drag force (abscence of air).
ii) When a person is dropped, and there is not air resistance, the only force acting on the person's body is the Earth's gravitational attraction (downward), which is the responsible for the gravitational acceleration (around 9.8 m/s²).
iii) Under that sceneraio, there is not normal force acting on the person (the normal force is the force that the floor or a chair exerts on a body to balance the gravitational force when the body is on it).
2) This is, the person does not feel a pressure upward, which is he/she does not feel the weight: freefalling is a situation of apparent weigthlessness.
3) True weightlessness is when the object is in a place where there exists not grativational acceleration: for example a point between two planes where the grativational forces are equal in magnitude but opposing in direction and so they cancel each other.
Therefore, you conclude that, assuming no air resistance, a person in this ride experiencing apparent weightlessness.
To determine an epicentral distance scientists consider the arrival times of what wave types
Which of the following puts the MOST demand on water supplies? Question 18 options: A) flood B) overpopulation C) drought D) pollution
option (b) is correct.
Overpopulation puts the most demand on water supplies.The reservoirs of the water are fixed but the human population is ever increasing. The needs of water for drinking, washing,industrial use like medicines, construction etc are thus increasing with every passing day.So, we are continuously running out of the water supplies. Because of the overpopulation. the pollution of water is also increasing, thus rendering the water unfit for drinking.
Thus overpopulation puts the most demand on water supplies.
Answer:
option (b) overpopulation is the correct option for this question
Explanation:
Overpopulation is the reason in increasing demand on water supplies.Overpopulation is a bothersome condition where the quantity of existing human populace surpasses the conveying limit of Earth. Overpopulation is brought about by number of variables. Decreased death rate, better restorative offices, consumption of valuable assets are few of the causes which results in overpopulation. Because of the overpopulation. the pollution of water is also increasing, thus rendering the water unfit for drinking
Forces are _______ which means they need to be determined by not only their numeric value (amount of force in Newton's) but also their _______.
please help this is a science question
Forces are vectors, which means they need to be determined by not only their numeric value (amount of force in Newton's) but also their direction.
Some other examples of vector quantities include displacement, acceleration, velocity, and momentum. Each of these isn't complete until you know its size and direction.
There are other quantities that have size but no direction. They include distance, speed, volume, temperature, cost, and loudness. These are called "scalars".
Eddie and Val observed the picture of an athlete running in a race. Eddie stated the picture shows potential energy being transformed to kinetic energy. Val stated that it shows chemical energy being transformed to mechanical energy. Which best explains who is correct?
Only Eddie is correct because the picture does not show a transformation that starts with chemical energy.
Only Eddie is correct because the picture does not show a transformation that ends with mechanical energy.
Both Eddie and Val are correct because chemical energy is a type of potential energy and mechanical energy includes kinetic energy.
Both Eddie and Val are correct because chemical energy is a type of kinetic energy and mechanical energy includes potential energy.
ITS NOT THE LAST ONE I GOT THAT ONE WRONG LAST TIME
Answer:
"Both Eddie and Val are correct because chemical energy is a type of potential energy and mechanical energy includes kinetic energy."
Explanation:
Answer:
C
Explanation:
now give me brainly please
A wooden block has a mass of 562 g and a volume of 72 cm3. What is the density?
15 points !!!!!!!!!!!
Answer:
Density of the wooden block is [tex]7805.5\ kg/m^3[/tex]
Explanation:
It is given that,
Mass of the wooden block, m = 562 g = 0.562 kg
Volume of the block, [tex]V=72\ cm^3=7.2\times 10^{-5}\ m^3[/tex]
We need to find the density of the block. Mass per unit volume of an object is called its density. It is given by :
[tex]d=\dfrac{m}{V}[/tex]
[tex]d=\dfrac{0.562\ kg}{7.2\times 10^{-5}\ m^3}[/tex]
[tex]d=7805.5\ kg/m^3[/tex]
So, the density of the wooden block is [tex]7805.5\ kg/m^3[/tex]. Hence, this is the required solution.
Density of a Material
The density of a material is defined as the mass per unit volume
it formula is given as
Density = Mass/Volume
and the unit is g/cm^3
Explanation:
Given data
Mass = 562 g
Volume = 72 cm3
Hence the density is expressed as
Density = 562 /72
Density = 7.80 g/cm^3
therefore the density is 7.80 g/cm^3
for more information on density see the link below
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As the army approached the bridge into the city, the commander told them to break step. He did not want the soldiers to march in cadence. Why did the commander give this order?
At a definite point, the bridge would begin oscillating to the matching rhythm as that of the marching footsteps. This oscillation would touch a determined peak when the bridge can no longer tolerate its own power and later collapses. So, soldiers are systematic to break their steps while passing a bridge.
Soldiers are ordered to 'route step' across a bridge to prevent forced oscillations and resonance that can lead to structural failure if marching is synchronized.
The reason soldiers are usually ordered to "route step" or walk out of step across a bridge has to do with forced oscillations and resonance. When soldiers march in cadence, their synchronized steps act as a periodic force that can cause the bridge to oscillate at its natural frequency if the cadence matches this frequency. This can amplify the oscillations to dangerous levels, potentially leading to structural failure of the bridge. By breaking step, the soldiers apply random forces to the bridge, which decreases the chances of resonance occurring, thus maintaining the structural integrity of the bridge.
A sinusoidal wave travels with speed 250 m/s . its wavelength is 3.5 m . part a what is its frequency
After the sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. in this state, it would have approximately the same mass as it has now, but its radius would be equal to the radius of the earth. (a) calculate the average density of the white dwarf.
Air is contained in a cylinder device fitted with a piston-cylinder. the piston initially rests on a set of stops, and a pressure of 200 kpa is required to move the piston. initially, the air is at 100 kpa and 238c and occupies a volume of 0.25 m3. determine the amount of heat transferred to the air, in kj, while increasing the temperature to 700 k. assume air has constant specific heats evaluated at 300 k.
A bird lands on a bare copper wire carrying a current of 51
a. the wire is 8 gauge, which means that its cross-sectional area is 0.13 cm2. (a) find the difference in potential between the bird's feet, assuming they are separated by a distance of 5.1 cm.
You are given a cylinder of outer radius 3.27 cm and length of 11.5 cm. along the axis of the cylinder is a hole of diameter 2.47 cm. find the volume of this cylindrical shell.
The n = 2 to n = 6 transition in the bohr hydrogen atom corresponds to the ________ of a photon with a wavelength of ________ nm.
The transition of an electron from n = 2 to n = 6 in a hydrogen atom in the Bohr model involves the absorption of a photon. The wavelength of this photon can be calculated using the Rydberg formula, but a specific value cannot be provided without additional information.
Explanation:The student's question relates to the Bohr model of the hydrogen atom and specifically to the transition of an electron from the n = 2 energy level to the n = 6 energy level. According to Bohr's model, when an electron in a hydrogen atom transitions between two energy levels, it either absorbs or emits a photon whose energy equals the difference in energy between the two levels.
To find the wavelength of the photon associated with the transition, you can use the Rydberg formula:
The exact calculations require substituting the values of h, c, and E (with E determined by the specific energy levels involved in the transition - here from n = 2 to n = 6).
Because this question does not provide all the numerical values needed for the calculation, such as Planck's constant and the speed of light, and does not specify whether the transition represents absorption or emission, we cannot provide a specific value for the wavelength. However, it's important to note that transitions to higher energy levels (n > 2) correspond typically to absorption, and the wavelength would fall into a specific region of the electromagnetic spectrum depending on its energy.
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What potential difference is needed to accelerate a he+ ion (charge +e, mass 4u) from rest to a speed of 1.0×106 m/s ? express your answer using two significant figures?
The potential difference required to accelerate the helium ion to a speed of [tex]1.0 \times {10^6}\,{{\text{m}} \mathord{\left/{\vphantom {{\text{m}} {\text{s}}}} \right.\kern-\nulldelimiterspace} {\text{s}}}[/tex] is [tex]\boxed{21\,{\text{kV}}}[/tex] or [tex]\boxed{20875\,{\text{V}}}[/tex].
Further Explanation:
The potential difference, through which the helium ion passes, provides the potential energy and this potential energy provided by the potential difference to the Helium ion leads to the increase in the kinetic energy of the ion.
The charge on the [tex]H{e^ + }[/tex] ion is equal to the charge of one electron and the mass of the helium atom is equal to the mass of [tex]4\,{\text{amu}}[/tex].
The expression for the conservation of the energy of the Helium ion in the potential difference is:
[tex]\Delta PE = \Delta KE[/tex]
Substitute [tex]q\Delta V[/tex] for [tex]\Delta PE[/tex] and [tex]\dfrac{1}{2}m{v^2}[/tex] for [tex]\Delta KE[/tex] in above expression.
[tex]\begin{aligned}q\Delta V &= \frac{1}{2}m{v^2} \hfill \\\Delta V &= \frac{{m{v^2}}}{{2q}} \hfill \\\end{aligned}[/tex]
Here, [tex]\Delta V[/tex] is the potential difference, [tex]m[/tex] is the mass of the ion, [tex]q[/tex] is the charge over the ion.
Substitute [tex]1.6 \times {10^{ - 19}}\,{\text{C}}[/tex] for [tex]q[/tex], [tex]\left( {4 \times 1.67 \times {{10}^{ - 27}}\,{\text{kg}}} \right)[/tex] for [tex]m[/tex] and [tex]1.0 \times {10^6}\,{{\text{m}} \mathord{\left/{\vphantom {{\text{m}} {\text{s}}}} \right.\kern-\nulldelimiterspace} {\text{s}}}[/tex] for [tex]v[/tex] in above expression.
[tex]\begin{aligned}\Delta V &= \frac{{\left( {4 \times 1.67 \times {{10}^{ - 27}}\,{\text{kg}}} \right){{\left( {1.0 \times {{10}^6}\,{{\text{m}} \mathord{\left/{\vphantom {{\text{m}} {\text{s}}}} \right.\kern-\nulldelimiterspace} {\text{s}}}} \right)}^2}}}{{2\left( {1.6 \times {{10}^{ - 19}}\,{\text{C}}} \right)}} \\&= \frac{{6.68 \times {{10}^{ - 15}}}}{{3.2 \times {{10}^{ - 19}}}}\,{\text{V}} \\&= 2{\text{0875}}\,{\text{V}} \\&\approx {\text{21}}\,{\text{kV}}\\\end{aligned}[/tex]
Thus, the potential difference required to accelerate the helium ion to a speed of [tex]1.0 \times {10^6}\,{{\text{m}} \mathord{\left/ {\vphantom {{\text{m}} {\text{s}}}} \right.\kern-\nulldelimiterspace} {\text{s}}}[/tex] is [tex]\boxed{21\,{\text{kV}}}[/tex] or [tex]\boxed{20875\,{\text{V}}}[/tex].
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Grade: College
Chapter: Electrostatics
Subject: Physics
Keywords: Potential energy, potential difference, accelerate, kinetic energy, speed, helium ion, charge, significant figures, rest to a speed.
Does someone have this??
The charge within a small volume dv is dq=ρdv. the integral of ρdv over a cylinder of length l is the total charge q=λl within the cylinder. use this fact to to determine the constant ρ0 in terms of λ and r. hint: let dv be a cylindrical shell of length l, radius r, and thickness dr. what is the volume of such a shell?
Answer:
Given
dq=density*dv
q=lamda*I
Taking double integration
density=lamda/2*pi*r^2
An eagle that has a mass of 4.5 kg is spotted 5 m above a lake. It flies up to its nest in a tree at a height of 25m
Answer:
c
Explanation:
just took test on edge but not sure if i was right :) goodluck gs
A skier moving at 4.75 m/s encounters a long, rough, horizontal patch of snow having a coefficient of kinetic friction of 0.220 with her skis. how far does she travel on this patch before stopping?
A force of 35 n acts on an object which has a mass of 5.4 kg. what acceleration (in m/s2) is produced by the force