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Hope this helped :)
~pinetree
During a race, a horse's speed increases from 65 m/s to 73 m/s during the last 5.0 seconds of that race What was the rate of acceleration during this time?
Answer:
1.6m/s²
Explanation:
It was difficult to type the answer here
During a race, a horse's speed increases from 65 m/s to 73 m/s during the last 5.0 seconds of that race, 1.60 m/s² was the rate of acceleration during this time.
What do you mean by an acceleration ?The rate of change of velocity is defined as acceleration. Acceleration usually indicates that the speed is changing, but this is not always the case. When an object moves in a circular path at a constant speed, it is still accelerating because its velocity direction changes.
Acceleration occurs when the speed of an object increases or decreases, or when it changes direction. Acceleration, like velocity, has two types: average and instantaneous.
a = v - v₀ / t
Then, a = 73 × 65 / 5
a = 1.60 m/s²
Thus, 1.60 m/s² was the rate of acceleration during this time.
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differentiate between loadstone and bar magnet
Answer:
Explanation:
Permanent (Bar) Magnet. —-) Electromagnet
They are permanently magnetized. —-) These are temporarily magnetized.
What would happen if everyone on earth screamed at the same time?.
Answer:
There would be a huge sound like an applause. At 200 decibels (the loudest possible sound ever created on Earth), it could shatter ear drums.
Explanation:
Hope this helps
If everyone on the planet screamed at the same moment, it would be a tremendously loud and chaotic event.
The particular impacts and repercussions, however, would be dependent on a variety of parameters such as the strength of the screams, the length, and the location of persons.
The cumulative cries of billions of individuals would produce a deafening loudness, perhaps reaching levels far beyond what the human ear can handle.
Thus, those in close proximity to people yelling may experience discomfort, confusion, and even bodily pain as a result of the loudness.
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what is the speed of a wave has a wavelength of 0.5 m/s and a frequency of 2 hz?
Answer: The equation that relates wavelength and frequency for electromagnetic waves is: λν=c where λ is the wavelength, ν is the frequency and c is the speed of light.
10/0.5=20 meter.
Explanation:
The speed of a wave has a wavelength of 0.5 m/s and a frequency of 2 hz is 0.25 m.
What is wave ?Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.
Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.
There are two types of the wave longitudinal wave and transverse wave.
Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave.
Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a Transverse wave.
The relation between velocity, frequency and wavelength is,
c = λν
Where λ is wavelength, ν is frequency and c is velocity.
Given,
c = 0.5 m/s
ν = 2 hz
λ = ?
Putting all the values in the equation,
0.5 = 2λ
λ = 0.5/2 = 0.25 m
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Define propagation of sound
Considering the definition of speed and propagation of sound, sound is a sequence of waves of pressure which propagates through compressible media and depends on the characteristics of the medium in which the propagation occurs.
Definition of speed and propagation of soundSound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid.
That is, sound is a longitudinal wave, mechanical (does not travel in a vacuum) and propagates in all directions, so that the wave front is spherical.
Propagation of sound involves energy transport without matter transport, in the form of mechanical waves.
The speed of propagation of a sound wave depends on the characteristics of the medium in which the propagation occurs and not on the characteristics of the wave or the force that generates it. The speed of propagation of sound waves is also known as the speed of sound.
SummaryIn summary, sound is a sequence of waves of pressure which propagates through compressible media and depends on the characteristics of the medium in which the propagation occurs.
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Why does an iron nail sinks in water but a wooder cork floats on water?
Answer:
Because nail is made of metal
What would a wave with a low amplitude sound like? Question 3 options: It would sound quiet. It would sound loud. It would sound squeaky. It would sound deep
Answer:
it would be loud
Explanation:
it would be loud
i need help with this
A baseball player uses a bat to hit a 0.145-kilogram stationary baseball with a force of 18,436 newtons. What is the force, in newtons, on the player's bat?
Answer:
18,436 newtons
Explanation:
hope it helps you
what is the name of Li1S
If you hold a heavy weight over your head, the work you do __________. Is less than zero is greater than zero is converted into chemical energy Is zero. Is converted into potential energy
If you hold a heavy weight over your head, the work you do is Is converted into potential energy.
What is Work done?Work is said to be done when the applied force displaces an object over a given distance.
Work - energy theoremWork energy theorem states that, the work done on object is equal to change in mechanical energy of the object.
When an object is raised over a given distance the work done is equal to the potential energy of the object given as;
W = P.E = mgh
Thus, If you hold a heavy weight over your head, the work you do is Is converted into potential energy.
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How is an image created by an X-ray machine? A. High-energy electromagnetic waves are either absorbed by or reflected by body tissue. B. Low-energy electromagnetic waves are either reflected by or transmitted through body tissue. C. Low-energy electromagnetic waves are either absorbed by or transmitted through body tissue. D. High-energy electromagnetic waves are either absorbed by or transmitted through body tissue.
Answer: C Low energy electromagnetic waves are either reflecting by or transmitted through body tissue.
Explanation:
A 60w bulb has a higher resistance than a 100w bulb, since the power rating is given assuming that the bulb is connected to a 120v source by itself. If you connect a 60w bulb and a 100w bulb in series to an outlet, which will shine brighter?.
Voltage drop across any components in series is proportional to its resistance. 60W bulb has higher resistance than 100W bulb if both the bulbs were rated for same voltage. So higher voltage drop will be across a 60W bulb.
In parallel voltage drops will be same across both the bulbs but current through it will be inversely proportional to the resistance. So 100W bulb draws more current than 60W bulbs.
60W dissipates more energy than 100W bulbs when in series and 100W bulbs dissipates more energy when in parallel.
What is the kinetic energy of a 1.000 g bullet traveling at 1,000 m/s?
Answer: B
Explanation:
The conventional units for Joules is defined with kilograms. We are given the mass of the bullet in grams. Using the conversion factor of 1kg = 1000g, we get that:
[tex]1g*\frac{1kg}{1000g} =1*10^-^3kg[/tex]
Kinetic energy is defined to be:
[tex]KE=\frac{1}{2} mv^2[/tex]
[tex]KE=\frac{1}{2} (10^-^3kg)(1000m/s)^2[/tex]
[tex]KE=500J=5*10^2J[/tex]
A steel wire 0.72 m long has a mass of 5 x 10⁻³ kg. If the wire is under a tension of 60N, what is the speed of the transverse waves on the wire?
Answer:
93m/s
Explanation:
Solution,
Here,
Length(l)=0.72m
Mass(m)=5x 10⁻³
T=60N
As we have
v=√T/μ
And
μ=m/l
μ=5 x 10⁻³ /0.72
Now
v=√60×0.72/5 x 10⁻³
v=√8640
v=92.95m/s=93m/s
Four objects are being tested to see how they are affected by fluid friction. Object W has a surface area of 4. 5 cm2, Object X has a surface area of 2. 5 cm2, Object Y has a surface area of 6. 2 cm2, and Object Z has a surface area of 3 cm2. Which object would experience the most fluid friction? W X Y Z.
Answer: the most affected object by friction is the Y
Explanation:
The fluid friction consists of 2 parts.
viscous resistance and friction with air.
assuming that the objects are in contact with the air, the situation is described by the following equation.
with: C= numerical drag coefficient
p= density
A= Area of the object
v= velocity
so assuming the other variables are constants the area of the object is directly proportional to the fluid friction
How does an insulator stop the flow of an electric current? Question 9 options: Electrons in an insulator do not move readily. Insulators convert electric energy to other forms of energy. Insulators have too many electrons. Insulators have a positive charge so they absorb electrons.
Insulators are often defined as materials that do not allow electricity to flow through them. Option A is correct. Electrons in an insulator do not move readily.
What is an insulator?Insulators are commonly employed in physics. Insulators are often defined as materials that do not allow electricity to flow through them.
Insulators are also referred to as poor electrical conductors. We may discover various instances of these insulators in our daily lives. Insulators include materials such as paper, glass, rubber, and plastic.
Insulators are often defined as materials that do not allow electricity to flow through them. Electrons in an insulator do not move readily
Hence option A is correct. Electrons in an insulator do not move readily
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Suppose you had an electrical circuit and decided to change it into a new circuit. does the equivalent resistance of the new circuit compare to the old one ? If you were to insert additional resistors in series, how 。
a. No effect on the equivalent resistance
b. The equivalent resistance decreases
c. The equivalent resistance increases
Answer:
Yes becuase the circuit is fryed like sum french fries so yes yes is the yes option yes okay, yes but no
Explanation:
If you were to insert additional resistors in series, the equivalent resistance increases. The correct option is c.
What is equivalent resistance?The resistances when connected in series has the equivalent resistance equal to the sum of all the individual resistances.
In the series circuit, the equivalent resistance is
Req= R₁ + R₂ + R₃
Suppose you had an electrical circuit and decided to change it into a new circuit.
The current through the circuit is the same for each resistor in a series circuit and is equal to the applied voltage divided by the equivalent resistance.
Yes, the equivalent resistance of the new circuit compare to the old one.
If you were to insert additional resistors in series, the equivalent resistance increases.
Thus, the correct option is c.
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How can scientists best confirm and validate the results of an experiment so they can publish their findings?
by removing the control from the experiment
by adding more variables to the experiment
by decreasing the number of trials
by creating a replicable experiment
I think by adding more variables to the experiment.
help me with this pls
Answer:
8000J,100J,20
Explanation:
Wi =E×SE =400N × 20cm =8000J
Wo=L×SL=20N×5.0 m=100J
MA =L/E =400N/20N =20
Which of the following is not true about potential energy?
Select one:
a.
b.
C.
d.
Potential energy is stored energy.
Potential energy is related to position.
Potential energy is a scalar quantity.
Potential energy has direction.
Answer:
[tex]\huge\boxed{\sf Option \ D.}[/tex]
Explanation:
Potential Energy:
Energy stored due to the position of any object is usually known as the potential energy of the object.Type of Quantity:
Potential energy is a scalar quantity which means it is only defined by its magnitude and has no direction.Unit:
The unit of potential energy is joules.Types:
Gravitational potential energyElastic potential energyElectric potential energyNuclear potential energy[tex]\rule[225]{225}{2}[/tex]
Please help!
Which resources are renewable resources?
Select all correct answers.
1. natural gas
2. solar
3. coal
4. hydroelectric
5. biomass
Answer: The answers are Biomass, Solar, and Hydroelectric! :)
Explanation:
Which of the following is not an example of an electromagnetic wave.
A. microwaves
B. sonar
C. visible light
D. ultraviolet
Answer:
microwaves
Explanation:
Among the following, the wave which is not an example of the electromagnetic wave is water wave. Thus, the correct option is B. Explanation: Electromagnetic waves are produced as a result of the vibrations between the electric and magnetic fields. Examples of electromagnetic waves are X-ray, lightwave, radio wave, microwave, etc.
Water flowing from a waterfall before it hits the pond below?
Answer:
Kinetic Energy
Explanation:
Ang prinsipyo ay nagsasaad na ang enerhiya ay hindi maaaring malikha o masira, ngunit maaari lamang ma-convert mula sa isang anyo patungo sa isa pa. Ang tubig sa tuktok ng napakataas na talon ay nagtataglay ng gravitational potential energy. Habang bumabagsak ang tubig, ang enerhiya na ito ay na-convert sa kinetic energy, na nagreresulta sa isang daloy sa isang mataas na bilis.
Why do we need to convert mass to moles in stoichiometry problems.
The force between two objects is 60. N. One object has a positive charge of 1.2 x 10-6 C, while the other has a negative charge of -1.2 x 10-6 C. How far apart are the two objects in cm? (1.5 cm)
The distance between the two objects is 1.5 cm.
To calculate the distance between the two objects, we use the formula obtained from Columb's law
What is Columb's law?Columb's law states that the force of attraction or repulsion between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
Formula:
F = kqQ/r²............... Equation 1Where:
F = Force between the two objectsr = Distance between the objectsQ and q = charges on both objects respectively.k = Columb's constantMake r the subject of the equation
r = √(kqQ/F).............. Equation 2From the question,
Given:
F = 60 Nq = 1.2×10⁻⁶ CQ = 1.2×10⁻⁶ Ck = 8.99×10⁹Substitute these values into equation 2
r = √[(1.2×10⁻⁶×1.2×10⁻⁶×8.99×10⁹)/60]r = √[(12.9456×10⁻³)/60]r = √(2.16×10⁻⁴)r = 1.47×10⁻² mr = 1.47 cmr ≈ 1.5 cm.Hence, The distance between the two objects is 1.5 cm.
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What phase of the moon comes directly before a full moon?.
The right back player hits the ball over the net to start play. EIVERCS
___ ___ ___ ___ ___ ___ ___
2. The score is 15-15. EDECU
___ ___ ___ ___ ___
3. Stopping the game for a rest period. MIET TOU
___ ___ ___ ___ ___ ___ ___
4. The serving team fails to score. ODISTEU
___ ___ ___ ___ ___ ___ ___
5. Two out of three games. TCAMH
___ ___ ___ ___ ___
6. A high pass near the net for a player to spike it. ETS
___ ___ ___
7. A hard driven ball from above the net. PKEIS
___ ___ ___ ___ ___
8. Service lands in the opponent’s court without being touched. CAE
___ ___ ___
9. Clockwise movement of players following a side-out. OINTOTAR
___ ___ ___ ___ ___ ___ ___ ___
10. Scoring when a point is awarded on every serve regardless of which team is serving. ALYRL
The right back player hits the ball over the net to start play. EIVERCS
(((service)))
2. The score is 15-15. EDECU
(((deuce)))
3. Stopping the game for a rest period. MIET TOU
(((time out)))
4. The serving team fails to score. ODISTEU
(((outside)))
5. Two out of three games. TCAMH
(((match)))
6. A high pass near the net for a player to spike it. ETS
(((set)))
7. A hard driven ball from above the net. PKEIS
(((spike)))
8. Service lands in the opponent’s court without being touched. CAE
(((ace)))
9. Clockwise movement of players following a side-out. OINTOTAR
(((rotation)))
10. Scoring when a point is awarded on every serve regardless of which team is serving. ALYRL
(((rally)))
The right back player hits the ball over the net to start play. - SERVE
S E R V E _ _ _
The score is 15-15. - DEUCE
D E U C E _
Stopping the game for a rest period. - TIME OUT
T I M E _ O U T
The serving team fails to score. - SIDEOUT
S I D E O U T _
Two out of three games. - MATCH
M A T C H _
A high pass near the net for a player to spike it. - SET
S E T _
A hard driven ball from above the net. - SPIKE
S P I K E _ _
Service lands in the opponent’s court without being touched. - ACE
A C E _
Clockwise movement of players following a side-out. - ROTATION
R O T A T I O N _
Scoring when a point is awarded on every serve regardless of which team is serving. - RALLY
What is game ?A game is a systematic kind of play that is often done for enjoyment or amusement, however it may also be used as a teaching tool. A lot of games are also regarded as works of art. Sometimes people play games only for fun, while other times they play for recognition or reward.
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2. A 60-nc point charge is located at the center of a 'pi cube of side length m What is the electric flux through each of the faces of the cube?
Answer:
Bağışlayın, bəzi problemlərim olduğu üçün bunu edirəm.
Caleb does the following:
i. walks 4 m, south
ii. walks 8 m, east
iii. walks 4 m, north
iv. walks 8 m, west.
Her overall displacement is .....?