Answer:
A) Increases by a factor of 2
Explanation:
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.
Given that mass, m = 2m
Substituting into the equation, we have;
K.E = ½mv²
K.E = ½*2mv²
Cross-multiplying, we have;
2K.E = 2mv²
Hence, if the mass of an object increases by a factor 2, kinetic energy is increased by a factor of 2.
Measure the mass of a coin using a triple beam balance.
Explanation:
The triple beam balance is used to measure masses very precisely; the reading error is 0.05g
Explain why a tractor's big tyres stop it sinking too
far into soft soil.
big tires
Explanation:
Answer: Tractors with big tyres have larger contact area on ground. Since the area is large, the pressure acting becomes small and it can roll on ground easily with out the danger of sinking in ground.
As horizontal force of 90.0N is required to push a 75.0kg along a horizontal surface at a constant
speed. What is the magnitude of the force of friction?if you answer pls show work thank you
Answer:
90.0N
Explanation:
According to Newtons second law;
F = ma
\sumFx = max
Fm - Ff = max
Given
Moving force Fm = 90.0N
Ff is the frictional force is the mass
ax is the acceleration = 0m/s^2 (constant speed)
Substitute
90 - Ff = 75(0)
90 - Ff = 0
Ff = 90 - 0
Ff = 90.0N
Hence the frictional force is 90.0N
A skydiver has jumped out of an aircraft but has not yet opened her
parachute.
Which of these statements best describes what is happening?
1. She is pushed towards the Earth by the force of gravity.
2.She is pulled towards the Earth by the force of gravity.
3.She is pulled towards the Earth by air resistance.
4. She is pushed towards the Earth by air resistance.
Answer:
2
Explanation:
She's attracted with a great force back to earth's surface
SOMEONE HELP Jeffery used a stream table as a model to show how water erodes soil. As he sprayed water on the stream table, some of the soil was carried to the end of the table.
Jeffery used his stream table to model an interaction between which two spheres?
A. geosphere and biosphere
B. biosphere and atmosphere
C. hydrosphere and atmosphere
D. geosphere and hydrosphere
Answer:
Hydrosphere and atmosphere
Explanation:
As a pendulum swings from the bottom position to the top position
kinetic energy is changed into potential energy
mechanical energy is changed into radiation
radiation is changed into friction
potential energy is changed into kinetic energy
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Power and Energy.
As a pendulum swings from the bottom position to the top position, it gains a height which means it gains the Potential energy.
hence we can say that, kinetic energy is changed into potential energy.
So, the Option A.) is correct.
Answer:
I think it's A)
Explanation:
it could be wrong i don't know hope it's not good luck!
explain in details the concept of economic geography
Answer:
In the words of Hartshorn and Alexander: “Economic Geography is the study of the spatial variation on the earth’s surface of activities related to producing, exchanging and consuming goods and services. Whenever possible the goal is to develop generalizations and theories to account for these spatial variations.”
Explanation:
Which of the following is an example of vibrational kinetic energy?
windmill
heat
pendulum
bouncing ball
Answer:
It's the Pendulum, it is because during its to and fro motion, it vibrates and simulataneously exhibit kinetic energy.
Explanation:
:)
Answer:
bouncing ball bc it has kinetic energy. the pendulum has potential energy.
Explanation:
The water hyacinth was a major weed in Australian
and overseas' waterways until biological control
was used. Looking at the photo below, what
impact would this weed have on biodiversity in the
waterways it infests?
Whoever answers i will give branliest
2. The car slows down from 36 m/s to 15 m/s over a 3.0 second time interval. What is its average acceleration?
Answer:
9 meter per second square
Explanation:
acceleration equation is final minus initial velocity divided by time in seconds.
36-15/3=9 meter per second square.
Answer:
wendys
Explanation:nutz go in yo mouth
Chlorine gas (Cl2) can be produced using this equilibrium reaction involving gaseous PCl5 and PCl3. Which change would drive this process toward the product side?
PCl5 + energy ⇄ PCl3 + Cl2
A.
Decreasing the temperature
B.
Increasing the pressure
C.
Decreasing the pressure
D.
Removing the PCl5 as it forms
Answer:
C. Decreasing the pressure
Explanation:
anatomy of a Wave worksheet can someone help me out with the answers????
MG
Examine the graphs below.
Ta seconds)
B
Time in seconds
D
Time in seconds)
Time in seconds)
Which of the graphs shows that one of runners started 10 yards further ahead of the
other? Explain your answer.
Answer:
Where are the graphs
Explanation:
List and describe the three elements of language.
Answer:
the three major elements of language include form, content, and use. form involves three sub-components of syntax, morphology, and phonology. content is also known as semantics and use can be known as pragmatics.
Explanation:
hope this helps! :)
A lift moves up and down with an acceleration of 3 metre per second square .in each case calculate the relation of the floor on each man of mass 50 kg standing on a lift.
Answer:
[tex]150\ N[/tex]
Explanation:
[tex]We\ are\ given:\\Acceleration\ of\ the\ elevator= 3\ m/s^2\\Assumed\ mass\ of\ the\ man\ standing\ on\ it=50\ kg\\We\ know\ that,\\Force=Mass*Acceleration\\Or,\\F=ma\\Hence,\\Substituting\ m=50, a=3\ m/s^2,\\Force\ acting\ on\ the\ floor\ of\ the\ elevator=3*50=150\ Newtons[/tex]
Imagine a negative test charge sitting at the coordinate origin (0,0). Two bunches of positive charges are located on the x-axis and the y-axis, respectively, so that the vectors of the respective electric forces, which the test charge experiences, point from the origin at points (1,0) and (0,1), respectively. The total force vector, which the test charge experiences, points from the origin at the point __________
Answer:
the total force vector, on test charge is points from origin to point C( 1, 1 )
Explanation:
Given the data in the question, as illustrated in the image below;
from the Image, OA = 1, OB = AC = 1
so using Pythagoras theorem
a² = b² + c²
a = √( b² + c² )
so
OC = √( OB² + AC² )
we substitute
OC = √( OA² + AC² )
OC = √( 1² + 1² )
OC = √( 1 + 1 )
OC = √2
Coordinate of C( 1, 1 )
Hence, the total force vector, on test charge is points from origin to point C( 1, 1 )
PLEASE HELP ASAP
Name at least two concrete, positive steps you can take to avoid contracting gastroenteritis (in other words, DOs not DON’Ts).
Answer:
Handwashing with soap has been shown to reduce the risk of gastroenteritis by up to 47%.
Of course, avoiding contaminated foods that could harbor toxic bacteria and parasites is also important.
Explanation:
Here's what I found on the web to further explain and give you more info :) , "Vaccinations are also effective, particularly for rotavirus. The rotavirus The use of clean water and good sanitation practices are important for reducing rates of infectious gastroenteritis.
vaccines have seen a marked decline in the rate and severity of disease in both developing and developed countries.
Oral rehydration is the cornerstone of treatment for those suffering from mild to moderate dehydration. This can be achieved through a solution containing water, salts, and sugar. For severe cases of dehydration, hospitalization and intravenous fluids may be required.
Antibiotics are generally not recommended unless the gastroenteritis is bacterial or parasitic and symptoms are severe.
I hope I helped! :)
Would appreciate Brainliest! ;)
Timed plz hurry
Research indicates that individuals experiencing depression often experience anxiety disorders.
Please select the best answer from the choices provided
T/f?
Answer:
True
Explanation:
Research indicating that individuals experiencing depression often experience anxiety disorders is a true statement.
What is Depression?
This health disorder is characterized by loss of interest in activities as a result of depressed mood.
Individuals who have depression often experience anxiety disorders such as panic attacks etc.
Read more about Depression here https://brainly.com/question/441267
#SPJ2
An ant is crawling on the sidewalk. At one moment, it is moving south a distance of 5.0 mm. It then turns southwest and crawls 4.0 mm. What is the magnitude of the ant’s displacement?
A) 8.3mm
B) 8.3cm
C) 8.3m
D) 8.3km
The correct answer is (A) 8.3mm.
The total displacement will be the vector sum of the two displacements given in the question.
let the displacement to the south represent vector A = 5mm in magnitude directed toward south.
let the displacement to the south-west represent vector B = 4mm in magnitude directed toward south-west.
The angle between vector A and vector B is 45°, the angle between south and south-west.
SO the resultant
R = vectro A + vector B
[tex]R=\sqrt{A^{2}+B^{2}+2ABcos(45) } \\\\R=\sqrt{25+16+40*\frac{1}{\sqrt{2} } } \\\\R=8.3mm[/tex]
The ant's displacement is 8.3 mm in magnitude.
Learn more about vector addition:
https://brainly.com/question/19420810
Random question, if Tanjoro, Zenitsu, and other Demon Slayers can conjure elements with their swords, then can we do the same?
A) HELL YA, WATER SURFACE SLASHHHHHHHHHHHHHHHHH
B) Their freakin' anime characters... oF cOuRsE wE cAn (⌐■_■)
C) These physics don't match up...
D) Their freakin' anime characters... of course not..
Answer:
HELL YA, WATER SURFACE SLASHHHHHHHHHHHHHHHHH
Explanation:
-takes some random sword and tries to do water breathing- Nope, doesn't work q-q
Answer:
Explanation: BOTH A AND B
HELL YA, WATER SURFACE SLASHHHHHHHHHHHHHHHHH
Their freakin' anime characters... oF cOuRsE wE cAn (⌐■_■)
The magnetic field strength in an experiment is 5.0 x 10–4 Newtons per Amp meter (or 5.0 x 10–4 N A–1m–1), where the unit of force is the Newton (N = kg m s–2) and the unit of current is the Ampere (A = C s–1). A Coulomb, C, is a unit of charge. The electric field strength in another experiment is 1.8 x 104 N C–1. From these parameters, both the magnetic displacement and the electric displacement were each measured to be 6.0 cm. Calculate the velocity of the particles.
Answer:
The velocity of the particles is "0.36×10⁸ m/s".
Explanation:
The given values are:
Magnetic field strength,
B = 5.0×10⁻⁴ N/Amp
In another experiment,
F = 1.8×10⁴
By considering the Lorentz force, the velocity will be:
⇒ [tex]qE=qvB[/tex]
then,
⇒ [tex]v=\frac{F}{B}[/tex]
On substituting the given values, we get
⇒ [tex]=\frac{1.8\times 10^4}{5.0\times 10^{-4}}[/tex]
⇒ [tex]=0.36\times 10^8 \ m/s[/tex]
A parallel beam of light falls on two small slits 5x10-5 m apart.
A) If the distance between the central and 1st fringe is 0.06 m and the light is being
projected onto a screen 5 m away, what is the wavelength of the light?
B) Roughly what color is it?
Answer:
λ = 6 10⁻⁷ m, color orange
Explanation:
This problem is about the interference phenomenon, constructive interference occurs when the path difference is equal to an integer number of wavelengths
d sim θ = m λ
Let's use trigonometry, remembering that the angles for these experiments are very small.
Sin θ = y / L
tan θ = [tex]\frac{sin \theta}{cos \theta}[/tex] = sin θ
sin θ = y / L
we substitute
[tex]d \ \frac{y}{L} = m \lambda[/tex]
A) Donut length is requested
λ = [tex]\frac{d \ y}{m \ L}[/tex]
let's calculate
λ = 5 10⁻⁵ 0.06 /( 1 5)
λ = 6 10⁻⁷ m
B) let's express the wavelength in nm
λ = 6 10⁻⁷ m = 600 nm
this corresponds to the color orange
explain the main development stages of the tropical hurricanes/cyclones and discuss their impacts according to the Saffir Simpson Hurricane Wind Scale
Answer:
The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based only on a hurricane's maximum sustained wind speed. This scale does not take into account other potentially deadly hazards such as storm surge, rainfall flooding, and tornadoes.
The Saffir-Simpson Hurricane Wind Scale estimates potential property damage. While all hurricanes produce life-threatening winds, hurricanes rated Category 3 and higher are known as major hurricanes*. Major hurricanes can cause devastating to catastrophic wind damage and significant loss of life simply due to the strength of their winds. Hurricanes of all categories can produce deadly storm surge, rain-induced floods, and tornadoes. These hazards require people to take protective action, including evacuating from areas vulnerable to storm surge.
Explanation:
pls mark as branlist.
Tropical hurricanes or cyclones are usually destructive with great wind speeds of 3 and above according to the Saffir Simpson Hurricane Wind Scale with huge amounts of rainfall resulting in flooding.
What is the Saffir Simpson Hurricane Wind Scale?The Saffir Simpson Hurricane Wind Scale is scale that classifies wind based on wind speed using a scale of 1-5.
This scale does not take into account wind surge, amount of rainfall and other characteristics of storms.
Storms rated 3 and above are particularly strong and destructive.
Those rated below 3 are mild and less destructive.
Tropical hurricanes or cyclones are usually destructive with great wind speeds of 3 and above according to the Saffir Simpson Hurricane Wind Scale with huge amounts of rainfall resulting in flooding.
Learn more about cyclones at: https://brainly.com/question/1222463
please help me with this i dont know it
Answer:
no it would not. that is an open circuit and it would need to be closed at the switch for current to flow.
The area of a piston of a force pump is 8 X 10⁴m². What force must be
applied to the piston to raise oil (d = 780 Kg/mº) to a height of 6.0 m? Assume
the upper end of the oil is open to the atmosphere.
Answer:
Force of [tex]37.44 * 10^{8}[/tex] Kgm/s^2 must be applied to the piston to raise oil to a height of 6.0 m
Explanation:
As we know,
Pressure is the force per unit area
Or [tex]P = \frac{F}{A}[/tex]
Force [tex]= P * A[/tex]
Pressure is the product of density, gravitational constant and height
[tex]P = 780 * 10 * 6[/tex]
Force
[tex]= P * A\\= 780 * 10*6*8*10^4\\= 37.44 * 10^{8}[/tex]Kgm/s^2
The force that must be applied to the piston to raise oil will be 37.44 ×10⁸ N. Force is defined as the ratio of presure and area. Its unit is Newton.
What is force?Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.
The given data in the problem is;
A is the area of a piston = 8 X 10⁴m².
F is the force=?
h is the height = 6.0 m
Force is defined as the ratio of presure and area. Its unit is Newton.
[tex]\rm P = \frac{F}{A} \\\\ \rm F = P \times A \\\\ \rm F = 780 \times 10^6 \times 8 \times 10^4 \\\\ \rm F = 37.44 \times 10^8[/tex]
Hence the force that must be applied to the piston to raise oil will be 37.44 ×10⁸ N.
To learn more about the force refer to the link;
https://brainly.com/question/26115859
A constant current source supplies a electric current of 200 mA to a load of 2kΩ. When the load changed to 50Ω, the load current will be
8A
9mA
700mA
12A
Answer:
700ma
Explanation:
all u do is have to add them up.
Ohm's law allows us to calculate the result for the value of the current when we change the resistance of the circuit:
The current is: i = 8 A
Ohm's law establishes that voltage is proportional to current and we call the constant of proportionality resistance in a circuit.
V = i R
Where V is the voltage, i the current and R the resistance of the circuit.
They indicate that the source supplies a current of i = 200 mA = 0.200 A at a load of R = 2 kΩ = 2 10³ Ω
Let's find the source voltage.
V = 0.200 2 10³
v = 400 V
Now with this voltage let's find the current for the new load of R = 50 Ω
i = V / R
i = 400/50
i = 8 A
In conclusion using Ohm's law we can calculate the result for the value of the current when we change the resistance of the circuit is:
The current is: i = 8 A
Learn more here: brainly.com/question/12865879
Most individuals over 65 years of age
A 2500 kg truck traveling at 80.0 km/h comes to stop in a time of 4.25 seconds. What is the force exerted on the truck?
Answer:
First there is a need to convert 80.0 km/h to m/s. It is equivalent to (200 / 9) m/s. Because the body stops after 4.25 seconds, its acceleration is -(200/9/4.25) m/s^2. The needed force to stop the 2500 kg truck is equal to the product of its mass and its acceleration.
Solving for the net force to stop the 2500 kg truck
Force = mass * acceleration
Force = 2500 kg * -(200/9/4.25) m/s^2
Force = −13072 N or about −13.07 kN
The force exerted on the truck is −13072 N or about −13.07 kN
Two charges and are separated by 10cm on the x- axis. Q2 is at the origin and Q1 is 12cm to the right.
a. What is the net Electric Force (magnitude and direction) on Q2 due to Q1?
b. Calculate the magnitude and direction of the net electric field -2.0 cm to the left of Q2.
Answer:
Explanation:
Q₂ is at the origin and Q₁ is at 12 cm on x -axis
Force between Q₁ and Q₂
= K x Q₁ x Q₂ / .12 where k is a constant equal to 9x 10⁹
Force F = 9 x 10⁹ x Q₁ x Q₂ / .12²
= 625 x 10⁹ x Q₁Q₂ N
This is the force each one exerts on other . So electric force on Q₂ due to Q₁ is 625 x 10⁹ x Q₁Q₂ N . Its direction is towards left as both will repel each other.
b)
Electric field due to charge Q₂ at - 2 cm
= 9 x 10⁹ x Q₂ / .02²
= 22500 x 10⁹ x Q₂ N/C , towards left .
Electric field due to charge Q₁ at - 2 cm
= 9 x 10⁹ x Q₁ / .14²
= 459.18 x 10⁹ x Q₁ N/C , towards left
As both the fields are to the same direction
Net field = 75 x 10⁹ x Q₂ + 459.18 x 10⁹ x Q₁
10⁹ ( 22500 x Q₂ + 459.18 x Q₁ ) N/C .
Direction will be towards left.
Aphids are a type of insects that sucks the sap out of certain types of plants, including potatoes. Not only do they physically damage and weaken the potato plants, but they can also infect them with diseases.
Which of the following examples shows a relationship that is most like that of the aphid and potato plants?
Answer Choices:
A. Crop plants must compete with weeds for available resources like nutrients, water, and space.
B. Anemones protect clownfish from predators while benefiting from nutrients in the waste of the fish.
C. The mistletoe plant attaches to trees and extracts nutrients for itself, which stunts tree growth.
D. Remora fish attach to sharks, eat scraps off the shark's prey, and remove parasites from the shark's skin.