Answer: Ain't its because how light the feather is ? It's not as heavy.
Explanation: With air resistance, acceleration throughout a fall gets less than gravity (g) because air resistance affects the movement of the falling object by slowing it down. ... Usually, resistance is not very high at low speed or for small or sharp objects (Google Source if needed to prove yours answer)
types of polarization physics
Answer:
Linear polarization.
Circular polarization.
Elliptical polarization.
Eddie and Val observed the picture of an athlete running in a race.
A large group of runners participate 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.
Answer:
The Answer is C.
Explanation:
Both Eddie and Val are correct because chemical energy is a type of potential energy and mechanical energy includes kinetic energy.
What is Energy?This is defined as the capacity and ability to do work. Potential energy is a type of energy by virtue of its position and chemical energy falls under this category.
Kinetic energy on the other hand is the energy by virtue of movement or motion and mechanical energy falls under this too thereby making option C most appropriate.
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What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to 14 REarth before coming to rest momentarily
Answer:
v = 1.078 10⁴ m / s
Explanation:
To solve this exercise we can use conservation of mechanical energy
Starting point. Just clearing
Em₀ = K + U = ½ m v² - G m M / [tex]R_{e}[/tex]
Final point. At r = 14R_{e}
Em_{f} = U = -G m M / 14R_{e}
how energy is conserved
Em₀ = [tex]Em_{f}[/tex]
½ m v² - G m M /R_{e} = -G m M / 14R_{e}
½ v² = G M / R_{e} (-1/14 + 1)
v² = 2 G M / R_{e} 13/14
we calculate
v² = 2 6.67 10⁻¹¹ 5.98 10²⁴ / 6.37 10⁶ 13/14
v = √ (1,16 10⁸)
v = 1.078 10⁴ m / s
The launch speed of a projectile that rises above the earth will be
v = 1.078 10⁴ m / s
What is speed?
Speed is defned as the movement of any object with respect to the time the formula of speed is given as the ratio of the distance with time.
To solve this exercise we can use conservation of mechanical energy
Starting point. Just clearing
[tex]E_{mo} = K + U = \dfrac{1}{2}m v^2 - \dfrac{G m M} { r}[/tex]
Final point. At[tex]r = 14R_{e}[/tex]
[tex]Em_{f} = U = \dfrac{-G m M }{14R_{e}}[/tex]
how energy is conserved
[tex]E_{mo }= \dfrac{1}{2} m v^2 -\dfrac{-G m M }{R_{e}} = \dfrac{-G m M }{ 14R_{e}}[/tex]
[tex]\dfrac{1}{2} v^2 = \dfrac{G M }{ R_{e} (\dfrac{-1}{14} + 1)}[/tex]
[tex]v^2 = \dfrac{2 G M} { R_{e} \dfrac{13}{14}}[/tex]
we calculate
[tex]v^2 = \dfrac{2 6.67 \times10^{-11}\times 5.98 \times 10^{24}} { 6.37 \times 10^{6} \times \dfrac{13}{14}}[/tex]
[tex]v = \sqrt{ (1,16\times 10^8)}[/tex]
v = 1.078 10⁴ m / s
Hence the launch speed of a projectile that rises above the earth will be
v = 1.078 10⁴ m / s
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A 30-gram arrow, moving at 60 m/s, hits a stationary 240-gram apple. The arrow passes through the apple, and is measured on the other side, moving at 55 m/s. What is the final velocity of the apple?
Answer: ouch
Explanation:
HELPPPP QUESTION IS ABOVE
Answer:
discount rate
Explanation:
i could be wrong but i believe thats what it is
One cubic meter of a saturated soil sample has a total mass of 2400 kg. The solids have a specific gravity of 2.70. The dry density of the soil is most nearly:
Answer:
6480kg/m³
Explanation:
Specific gravity is expressed as;
S = density of substance being measured/Density of the reference sample
Reference sample is the saturated soil
Density of the saturated soil = Mass/Volume
Density of the saturated soil = 2400/1
Density of the saturated soil = 2400kg/m³
Given
Specific gravity = 2.70
Get the dry density of the soil
Dry density of the soil = Specific gravity * Density of the saturated soil
Dry density of the soil = 2.70 * 2400
Dry density of the soil = 6480kg/m³
Hence the dry density of the soil is most nearly 6480kg/m³
Define neutralization
Answer:
neutral
Explanation:
ization
Answer:
A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.
Explanation:
A pilot engages the control wheel steering (CWS) of a conventional autopilot and carries out a manoeuvre in roll. When the control wheel is released, the autopilot will:
Answer: Maintain the flight altitude obtained at that moment.
Explanation:
An autopilot is a system used without the pilot's direct assistance to guide an aircraft. Only a steady heading and altitude could be maintained by early autopilots, but modern autopilots are capable of monitoring any aspect of the flight envelope from just after take-off until landing.
Bicycle in its writers have combined a mass of 80 kg in a speed of 6.0 meters per Second what is the magnitude of the average force needed to bring bicycle in its writers to stop in 4.0 seconds please help !!!
Answer:
F = 120 N
Explanation:
Force x distance = energy
The bike has energy 1/2 . 80 . 6^2 = 1440 J
You are looking at an example of not reading the question properly.
Impulse = Force . time = change in momentum
F . 4 = 80 .6
F = 120 N
A sphere of volume 1.20×10−3m3 hangs from a cable. When the sphere is completely submerged in water, the tension in the cable is 29.4 N. What is the buoyant force on the submerged sphere?
Answer:
B = 62.9 N
Explanation:
This is an exercise on Archimedes' principle, where the thrust force equals the weight of the liquid
B = ρ g V
write the equilibrium equation
T + B -W = 0
B = W- T (1)
use the density to write the weight
ρ = m / V
m = ρ V
W = ρ g V
substitute in 1
B = m g -T
B = [tex]\rho_{body}[/tex] g V - T
To finish the calculation, the density of the material must be known, suppose it is steel \rho_{body} = 7850 kg / m³
calculate
B = 7850 9.8 1.20 10⁻³ - 29.4
B = 92.3 - 29.4
B = 62.9 N
Hooke's law describes a certain light spring of unstretched length 32.1 cm. When one end is attached to the top of a doorframe and a 7.94 kg object is hung from the other end, the length of the spring is 42.4 cm. (a) Find its spring constant. .7554 Correct: Your answer is correct. kN/m (b) The load and the spring are taken down. Two people pull in opposite directions on the ends of the spring, each with a force of 178 N. Find the length of the spring in this situation. .7923 Incorrect: Your answer is incorrect.
Answer:
[tex]0.75623\ \text{kN/m}[/tex]
[tex]55.6\ \text{cm}[/tex]
Explanation:
m = Mass of object = 7.94 kg
g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]
x = Change in length of the spring = [tex](42.4-32.1)\ \text{cm}[/tex]
F = Force on the spring
Force of gravity on the object and the force on the spring will be equal
[tex]mg=kx\\\Rightarrow k=\dfrac{mg}{x}\\\Rightarrow k=\dfrac{7.94\times 9.81}{0.424-0.321}\\\Rightarrow k=756.23\ \text{N/m}[/tex]
The spring constant is [tex]756.23\ \text{N/m}=0.75623\ \text{kN/m}[/tex]
F = 178 N
Force on spring is given by
[tex]F=kx\\\Rightarrow x=\dfrac{F}{k}\\\Rightarrow x=\dfrac{178}{756.23}\\\Rightarrow x=0.235\ \text{m}=23.5\ \text{cm}[/tex]
The length of the spring will be [tex]32.1+23.5=55.6\ \text{cm}[/tex].
About how far apart must you hold your hands for them to be separated by 1.6 nano-light-second (the distance light travels in 1.6 ns)? Assume that the speed of light is 2.998*108 m/s.
Answer:
d = 0.479 m
Explanation:
Given that,
The distance light travels in = 1.6 ns
The speed of light is [tex]2.998\times 10^8\ m/s[/tex]
The speed of an object is given by distance traveled divided by time.
[tex]c=\dfrac{d}{t}\\\\d=ct\\\\d=2.998\times 10^8\times 1.6\times 10^{-9}\\\\=0.479\ m[/tex]
Hence, the required distance is 0.479 m.
Water waves are waves because the wave moves up and down. transverse longitudinal
Answer:
it is transverse because longitudinal run lengthwise rather than across
hoped this helped lmk if it did
Compare the gravitational force the sun exerts on Earth to the gravitational force Earth exerts on the sun.
Answer:
as
Mass of sun > Mass of earthTherefore, the sun will exert more gravitational force on earth.
Explanation:
While comparing the gravitational force exerted by two objects, we need to observe which object has a greater mass.
The object with the greater mass exerts a more gravitational force on the other object.We know that mass of the sun is about 1.99 x 10³⁰ kg, and the earth's mass is only 6.0 x 10²⁴.
as
Mass of sun > Mass of earthTherefore, the sun will exert more gravitational force on earth.
Read each scenario and then answer the question. Scenario A: A 3 StartFraction N over m EndFraction spring is compressed a distance of 1.0 m. Scenario B: A 6 StartFraction N over m EndFraction spring is compressed a distance of 0.8 m. Scenario C: A 9 StartFraction N over m EndFraction spring is compressed a distance of 0.6 m. Scenario D: A 12 StartFraction N over m EndFraction spring is compressed a distance of 0.4 m. Which scenario generates the most elastic potential energy?
Answer:
The correct answer is B
Explanation:
Answer:
B
Explanation:
edge2o2o
Which has bigger inertia? Why? Elephant or ant sumo fighter or toddler pickup truck or 16 wheeler.
Answer:
16 wheelerExplanation:
"Inertial mass is a measure of an object resistance to acceleration when a force is applied. the inertial is a function of the mass of a body.
Given the following
1. Elephant
2. Ant sumo fighter
3. Toddler pickup truck
4. 16 wheeler.
The body of greater mass has greater inertia.
Of all the 4 items in the list, the 16 wheeler has the largest mass, hence it also has the greater inertial
the_____ climate is the coldest climate region and includes
Answer:
the POLAR climate is the coldest climate region and includes...
Explanation:
It includes the ice cap ,and Artic and tundra climates
Write one to two sentences explaining whether this passage from the story is exposition, rising action, climax, or resolution: “The announcer turned to point to the winner and found himself alone. Arm in arm the champions had already left the ring.”
Answer:
This passage is part of the resolution because it shows what happens after the climax. It wraps up the conflict, and then the story is over.
Explanation: cause I am smart thats why
A spacecraft heading for Pluto will take pictures of several other planets on its way. The above equation gives the distance, ddd, in millions of kilometers, of the craft from its first photo opportunity with Mars in terms of the time, ttt, in days. What is the meaning of the 212212212 in this equation
Answer:
The maximum number of days for the trip
Explanation:
Given
[tex]d = 1.06(212 - t)[/tex] --- Missing Equation
Required
What does d represent?
From the question, we understand that t represent the number of days;
So, by default 212 represent days
Going further:
For the equation, [tex]d = 1.06(212 - t)[/tex] to be valid; the value of t must be within the interval;
[tex]0 \le t \le 212[/tex]
When [tex]t = 0;[/tex]
that is the beginning of the journey
As t increases;
212 - t decreases
Until the point where t = 212,
This signifies the end of the journey
So: 212 - t indicates a particular day between 0 and 212.
Hence, 212 represents the maximum number of days for the trip.
What is the correct Lewis structure for group 5A element, arsenic?
Answer:
A
Explanation:
Because Arsenic is in group 15 it will receive 5 valence electrons Start out by adding one dot around the symbol for Arsenic. You'll end up with 4 around it and all you have to do is add another one.
Which one of the the following occurs when sodium forms an ionic bond?
Answer:
An atom of sodium (Na) donates one of its electrons to an atom of chlorine (Cl) in a chemical reaction, and the resulting positive ion (Na+) and negative ion (Cl−) form a stable ionic compound (sodium chloride; common table salt) based on this ionic bond.
Explanation:
All the info i can give you
Through what potential difference must an electron be accelerated from rest to have a de Broglie wavelength of 500 nmnm
Answer:
V = 6.04 10⁻⁶ V
Explanation:
The energy in a system is conserved so the potential energy of the system must be transformed into the kinetic energy of the electron.
[tex]E_{p}[/tex] = K
eV = ½ m v²
V = ½ m v²/e
Let's use the de Broglie relation
λ= h / p
the moment is
p = mv
let's replace
λ = h / mv
v = [tex]\frac{h}{m \lambda }[/tex]
hence the potential energy
V = ½ [tex]\frac{m}{e}[/tex] (\frac{h}{m \lambda })²
[tex]V = \frac{h^{2} }{2e m \lambda^{2} }[/tex]
let's reduce λ to sistem SI
λ = 500 nm = 500 10⁻⁹ m = 5 10⁻⁷ m
let's calculate
V = (6.63 10⁻³⁴)² / (9.1 10⁻³¹ 1.6 10⁻¹⁹ (5 10⁻⁷)² )
V = 6.04 10⁻⁶ V
Page 1:Page 2:
A web chart titled Map with a center circle connected to 4 outer circles.
Of the two organizational aids, which one would be the most useful for showing chronological order: the web or the sequence chart?
Answer:
or the other answer is venn diagram if your on another question
Explanation:
Answer:
the answer is c on edg
Explanation:
Help! My homework is due in a few minutes :(
Fernando is an engineer at an amusement park who is experimenting with changes to the setup for a magnetic roller coaster ride. In one ride, there are two identical roller coaster cars (red and yellow) that start on opposite sides of a large magnet located in the center of a station. He moves both cars, so each car ends up one space farther away from the large magnet.How did the potential energy of the two cars change? Did the potential energy of one car change more than the other? Why do you think so?
Answer:
I think that the potential energy of the cars will go down because the cars are moving farther away from the big magnet. Since the pols of the cars and big magnet are opposite and not the same they would want to attract if they got close to the big magnet, but since Fernando is pulling the carts away they loose that potential energy. I also think that the red cart changed more than the yellow cart because it is closer to the magnet which can have a lot of potential energy and he is now bringing the cart away from it. In conclusion, I think the red cart had a greater change in potential energy and the two cars changed in potential energy too.
Explanation:
- i hope this helps, i tried lol :)
A circuit is made up of a moving magnet, a wire coil, a battery, and
conducting wires. Which item is not required for the circuit to produce an
electric current?
A. The moving magnet
B. The battery
C. The conducting wires
O D. The wire coil
Answer:
the battery
Explanation:
I tried D and got it incorrect it said it was the battery
The battery is not required for the circuit to produce an electric current.
What is circuit?An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.
What is moving magnet?The magnet moves when a current flows through the coil or else movement of the magnet generates a current.
What is conducting wires?Conducting wire is a metal conductor that carries electricity over a distance.
Hence, the battery is the correct option for given question.
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An example of constant velocity
Lenders are prohibited from
using borrowers' information in a responsible manner.
explaining to borrowers why their application was rejected.
considering borrowers' sources of income other than salary.
considering borrowers 'race, sex and national origin.
Answer:
Considering borrowers race sex and national origin
Explanation:
Edge
Lenders are prohibited from considering borrowers' race, sex and national origin.
What is borrowing?Receiving something that will eventually be returned is the act of borrowing. In finance and economics, obtaining money is typically referred to as borrowing.
Simply put, borrowing is the act of obtaining money with the understanding that it will be required of the recipient to repay the same amount after a predetermined period of time. Most often, people or even various financial institutions may lend money.
The most dependable place to get financial aid is from banks. Apart from banks, consumers also frequently borrow money from consumer financing companies and other businesses.
Lenders are allowed to use borrowers' information in a responsible manner; explain to borrowers why their application was rejected, consider borrowers' sources of income other than salary. But lenders are prohibited from considering borrowers 'race, sex and national origin.
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angle between two straight lines is equal to angle between........................????
Answer:
acute angle between the lines
Explanation:
Select the correct answer.
Which of Newton's laws explains why your hands get red when you press them hard against a wall?
ОА.
Newton's law of gravity
OB.
Newton's first law of motion
O c.
Newton's second law of motion
OD.
Newton's third law of motion
Answer:
D. Newton's third law of motion
Why do you think the process of photosynthesis and respiration are interrelated?
Answer:
The processes of photosynthesis and respiration are interrelated because the products of such processes are used as reactants for one process. One product of photosynthesis is oxygen. This oxygen is used in the process of respiration as a reactant producing carbon dioxide which is used as a reactant for photosynthesis.
