Answer:The kinetic energy will decrease.
Explanation:As potential energy increases kinetic energy will increase, as kinetic or potential energy decreases, the kinetic or potential energy will decrease
A bar magnet cut in half will form a total of
poles.
a)four
b)eight
c)two
Answer:
A bar magnet is exactly 2 poles, if you cut it in half, you would have 4 poles.
Answer:
four
Explanation:
A yellow object on a blue background
appears as
[IE-05)
a. White
b.Black
c. Green
d. Red
How much heat is absorbed by 41 g iron skillet when its temperature varies from 9°C. to 20°C
Answer:
202.95J
Explanation:
The formulae for the energy absorbed by the iron skillet is;
q=m*c*ΔФ where q=energy absorbed, m is mass of iron skillet, c is specific heat capacity and ΔФ is change in temperature
Given that;
m= 41g
ΔФ=20°-9°=11°
c=0.45 J/g°C
q= 41×0.45×11
q= 202.95 J
A person walks 25.0° north of east for 3.10 km. How far due
north and how far due east would she have to walk to arrive at
the same location?
Explanation:
Use sine and cosine to find the vertical and horizontal components.
31.0 km × sin 25.0° = 13.1 km north
31.0 km × cos 25.0° = 28.1 km east
She would have to walk 13.1 km north and 28.1 km east.
you add 800 ml of water at 20c to 800 ml of water at 80c what is the most likely final temperature of the mixture ?
a. 100c
b. 60c
c. 25 c
d.50c
Answer:
d. 50 C
Explanation:
In this problem, we have to add 800 ml of water at 20 Celsius to 800 ml of water at 80 Celsius.
According to the 2nd law of thermodynamics, heat transfers from hot to cold temperature.
The quantity of both the different waters is equal so this makes it very easy. All we have to do is find the mean of both the temperatures:
Final temperature = (20 C + 80 C)/2
= 50 Celsius
Answer: D. 50 C
Explanation:
The metric unit of electrical power is the _____. watt volt ampere ohm
The answer is the second option "watt." Watt is the unit of power measured by one joule per second. Watts are a amount of electrical power and measured by the rate of energy transfer between two things.
Hope this helps.
Four different observers are standing in a straight line on a street and hear a siren from a police car. Each person recorded their observations in the chart shown.
If the people are all lined up on the street at different blocks, and the police siren starts at block 3, which statement describes what block each person is standing at?
Wycleff is on block 1, Lilly is on block 4, Quincy is on block 12, and Emilia is on block 17.
Lilly is on block 1, Wycleff is on block 4, Quincy is on block 12, and Emilia is on block 17.
Lilly is on block 1, Wycleff is on block 4, Emilia is on block 12, and Quincy is on block 17.
Wycleff is on block 1, Lilly is on block 4, Emilia is on block 12, and Quincy is on block 17.
Answer:
D
Explanation:
Wycleff heard a low pitch sound the whole time, so the police car must have been moving away from him. So he was at block 1.
Lilly observed a Doppler effect (change in pitch) first. So the car must have passed her first, so she was at block 4.
Emilia observed a Doppler effect after Lilly. So the car passed her after it passed Lilly, so she was at block 12.
Quincy heard a high pitch sound the whole time, so the police car must have been moving toward him. So he was at block 17.
Wycleff is on block 1, Lilly is on block 4, Emilia is on block 12, and Quincy is on block 17. Therefore, the correct option is option D.
What is doppler effect?The apparent change in frequency caused by an observer moving relative to the wave source is called as that of the Doppler effect, Frequency deviation, or simply Doppler, according to the circumstances. The phenomenon is named after Christian Doppler, the Austrian physicist who originally observed it in 1842.
The entire time, Wycleff would hear a low-pitched sound, suggesting that the police car was moving away from him. As a result, he was in block 1.
The very first thing Lilly saw was a Doppler effect (a pitch change). Due to her position in block 4, the car should really have bypassed her first.
Emilia saw a Doppler effect after Lilly. She was at block 12 whenever the car passed Lilly before overtaking her.
Quincy had been hearing a high-pitched sound the entire time, which signaled that perhaps the police car was coming. As a result, he was in block 17.
Therefore, the correct option is option D.
To learn more about doppler effect, here:
https://brainly.com/question/9165991
#SPJ6
What frequency will you hear if a truck is driving toward you at 20 m/s sounding a horn of frequency 300 Hz. Assume the speed of sound to be 340 m/s.
Answer:
=319Hz
Explanation:
This question is on sound waves
General formulae;
Frequency of observer= f of source*[ (v of sound+ v of observer)/(v of sound-v of source)]
where f is frequency and v is velocity
Given;
Velocity of sound = 340m/s
frequency of source = 300 Hz
Velocity of observer=0m/s
Velocity of source/truck= 20m/s
Substitute values in the formulae;
Frequency of observer= 300× {(340+0)/(340-20)}
=300×{ 340/320}
=300×340/320
=318.75
=319Hz
The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?
Answer:
2.7
Explanation:
This is because fluorine has an atomic number 9
Answer:
2, 7
Explanation:
Fluorine has 9 electrons and electronic structures are written listing the amount of electrons in each shell/energy level starting from the first one.
The first one can hold a maximum of 2 electrons and the 2nd, 3rd and 4rth can hold a maximum of 8
Which best describes how fluids change as they travel through different portions of the convection currents? They change to solids at the outer portion of the convection currents. They change to solids at the inner portion of the convection currents. They become more dense at the outer portion of the convection currents. They become more dense at the inner portion of the convection currents
Answer:
Fluids become more dense at the inner portion of the convection currentsxplanation:
Fluids become more dense at the inner portion of the convection currents. This is driven by the cyclical pattern where warm, less dense fluid rises and cool, denser fluid sinks. Convection is a key mechanism of heat transfer seen in various natural phenomena.
Convection currents describe the movement caused by the variations in temperature and density within a fluid. **Differences in density** cause less dense, warm regions to rise while more dense, cool regions sink. This process creates a cyclical pattern known as convection. Specifically:
Warm fluid becomes less dense and rises towards the outer portion of the convection current.Cool fluid becomes denser and sinks towards the inner portion of the convection current.Therefore, the correct option is that fluids become more dense at the inner portion of the convection currents. This shows the fundamental principle of convection where heat transfer causes fluid motion, leading to the continuous rising of warm fluid and sinking of cool fluid.
Which of the following types of stars had the smallest initial mass? Blue main sequence Neutron star Red supergiant White dwarf
Answer:
White dwarf
Explanation:
The Hertzsprung-Russell Diagram shows the mass of stars, the color, temperature and their brightness.Stars that lie below the main sequence area such as the White dwarf have the smallest initial mass.A white dwarf star has a mass less than that of the Sun.
Answer:
White Dwarf
Explanation:
The ampere is a unit of which physical quantity?
For this case we have by definition, that the Ampere, is the unit of electric current intensity.
For its part, the electric current is a measure of the velocity at which the electric charge flows.
The symbol of the current is A. We have that 1 Ampere is equivalent to an electric charge of a coulomb per second.
[tex]1A = \frac {1C} {s}[/tex]
Answer:
[tex]1A = \frac {1C} {s}[/tex]
PLEASE HELP: Which of the following is true about comets in our solar system?
a. Being mini-stars, they are made of gas.
b. They were discovered in the 17th century.
c. They take roughly the same amount of time to orbit the sun.
d. They all orbit the sun due to the sun’s gravity.
Answer: I think the answer is D. I'm sorry if it is incorrect.
Haley noticed a small spot on her skin that turned out to be skin cancer. Which treatment is her doctor most likely to use?
Answer:
B.) superficial external beam radiation therapy
Explanation:
This is used for skin cancer, correct on edge.
Superficial radiotherapy refers to radiation that does not penetrate deep into your body. Superficial external beam radiation therapy is used by the doctor for skin cancer.
What is Superficial radiotherapy?External radiation includes superficial radiotherapy. It is used to treat cancer that has spread to or near the skin's surface.
The term "superficial radiotherapy" refers to radiation that does not penetrate deep into your body.
Subtle radiotherapy can be performed using low-intensity x-rays (photons) or electrons. Your doctor will determine which one you require.
This is determined by the size and depth of cancer, as well as its location in the body.
Hence Superficial external beam radiation therapy is used by the doctor for skin cancer.
To learn more about Superficial radiotherapy refer to the link;
https://brainly.com/question/21287072
A cold coke bottle is on the pan of a balance and is left open. What happens to its weight?
Answer:
It's weight would decrease over time.
Explanation:
The cold coke is going to stabilise in the room temperature. This causes the coke to heat up to room temperature. When the coke heats up, some molecules acquire enough kinetic energy that the evaporate. The evaporation of the molecules causes a decrease in weight.
Hope it helped!
Answer:
it's weight will decree over time
Explanation:
because the ice will tern to winter than it will evaporate
Fluids can flow and change shape to fit their containers. Which two states are
fluids?
Answer: the two states that are fluid are;-
#{1} liquid
#{2} gas
Explanation:
as we know that there are mainly three states of substance
but among them only two of them can fluid and takes the shape of the container that are liquid and gas
Liquids and gases are considered fluids because they flow and adapt to the shape of their containers. Solids do not exhibit this behavior. Hence, the correct answer is Option D.
Matter most commonly exists in four phases: solid, liquid, gas, and plasma. Each state has unique properties:
Solids have a definite shape and volume and resist shearing forces.Liquids have a definite volume but take the shape of their container.Gases have neither a definite shape nor volume and expand to fill their container.Plasmas also have neither a definite shape nor volume.Liquids and gases are considered fluids because they yield to shearing forces and can flow to adapt to the shape of their containers. Solids do not exhibit this behavior.
Therefore, the correct answer is Liquids and gases (Option D).
Complete question:-
Fluids can flow and change shape to fit their containers. Which two states are fluids?
A. Solids and plasmas
B. Gases and solids
C. Solids and liquids
D. Liquids and gases
A vector has an x-component
of -309 m and a y-component
of 187 m.
Find the magnitude of the
vector.
Explanation:
The magnitude of a vector v can be found using Pythagorean's theorem.
||v|| = √(vₓ² + vᵧ²)
||v|| = √((-309)² + (187)²)
||v|| ≈ 361
You can find the angle of a vector using trigonometry.
tan θ = vᵧ / vₓ
tan θ = 187 / -309
θ ≈ 149° or θ ≈ 329°
vₓ is negative and vᵧ is positive, so θ must be in the second quadrant. Therefore, θ ≈ 149°.
Answer:
2 answers. Pay attention
Explanation:
Acellus asks you to find Magnitude and vector. The questions are in separate answers. Type in 361 whenever it asks for Magnitude. When it asks for Vector type in 149.
Magnitude is 361
Vector is 149
V-I graphs for two wires A and B are shown in the figure. If we connect both the wires
one by one to the same battery which of the two will produce more heat per unit time?
Justify your answer
В
(2)
state the right hand rule of the direction of magnetic field in a conductor carrying current
Answer:
The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.
Explanation:
gooogle.......
A block of size 20m x 10 mx 5 m exerts a force of 30N. Calculate the
maximum & minimum pressure exerted by the block on ground?hello yeah tell me the answer of this question
Answer:
We know that force applied per unit area is called pressure.
Pressure = Force/ Area
When force is constant than pressure is inversely proportional to area.
1- Calculating the area of three face:
A1 = 20m x 10 m =200 Square meter
A2 = 10 mx 5 m = 50 Square meter
A3 = 20m x 5 m = 100 Square meter
Therefore A1 is maximum and A2 is minimum.
2- Calculate pressure:
P = F/ A1 = 30 / 200 = 0.15 Nm⁻² ( minimum pressure)
P = F / A2 = 30 / 50 = 0.6 Nm⁻² ( maximum pressure)
Hence greater the area less will be the pressure and vice versa.
An unbalanced force can cause an object to change its speed and/or
An unbalanced force can cause an object to change its speed and/or direction. This change in momentum is governed by Newton's second law of motion. Examples of such changes can be observed in phenomena like non-circular motion.
Explanation:An unbalanced force can cause an object to not only change its speed, but also its direction. This phenomenon is explained by Newton's second law, which describes force in terms of its ability to change momentum over time. A force, which can be understood as a push or a pull, always has a size and direction. If we apply a force to an object, the momentum of the object changes in the direction of this applied force.
A clear illustration of this principle can be found in nonuniform circular motion, where a particle can move in a circle and speed up, slow down, or change direction due to an external force. In other words, any change in velocity, meaning in speed or direction, requires an outside force according to Newton's first law, also known as the law of inertia.
Learn more about Force and Momentum here:https://brainly.com/question/31707268
#SPJ12
The proper order of the cycle of addiction is
Answer:
The answer would be drug use, addiction, dependence, tolerance, and withdrawal.
Answer:
D. drug use, tolerance, dependence, addiction, and then withdrawal
Explanation: took the test rn on edge 2020
Jason is a body builder. Despite being more fit, he weighs more than his brother Ryan, who is the same height. Which is a possible reason?
A.
Jason has more muscle mass than Ryan does.
B. Jason has more body fat than Ryan does.
c. Jason has more muscle mass and body fat than Ryan does
D. Jason has less body fat than Ryan does.
Answer: C. Jason has more muscle mass than Ryan
Explanation:
21
22
23
24
25
Time Remaining
01:34:03
Which shows the correct order of steps during the formation of an ionic bond?
Ions are attracted to each other → Electrons are transferred → An ionic compound forms
An ionic compound forms → Ions are attracted to each other → Electrons are transferred
Electrons are transferred → Ions form → Ions are attracted to each other
Ions form → Electrons are transferred → Ions are attracted to each other
Answer:
Before I answer I want to say this Calibri is the superior font and green is the only highlight color.
The correct answer is C: Electrons are transferred → Ions form → Ions are attracted to each other
Explanation:
Generally, an ionic compound is formed between electropositive and electronegative elements.
Normally every element wants to occupy the inert gas configuration in order to be stable. During the ionic bond formation the electropositive metal will lose the electrons and forms cation. The electronegative metal will gain electrons and forms anion.
The cation is positively charged and the ion is negatively charged. Due to the coulombic force of attraction, the ions will be attracted to each other and forms an ionic compound.
One can take the example of NaCl where Na will lose one electron and form. Chlorine will take one electron and form. These ions are attracted and sodium chloride is formed.
Hence the formation of an ionic compound follows these steps-
1- First electrons are transferred.
2-The ions are formed
3-The ions are attracted to form the compound
a 230-newton box rests on a plank 5 meters long. One end is 1.2 meters higher than the other end. Find the components of the force the box exerts
Answer:
55.3 N, 223.3 N
Explanation:
First of all, we can find the angle of the inclined plane.
We have:
L = 5 m the length of the incline
h = 1.2 m is the height
We also have the relationship
[tex]h = L sin \theta[/tex]
where [tex]\theta[/tex] is the angle of the incline. Solving for the angle,
[tex]\theta= sin^{-1} (\frac{h}{L})=sin^{-1} (\frac{1.2 m}{5 m})=13.9^{\circ}[/tex]
Now we can find the components of the weight of the box, which is the force that the box exerts on the plank. Calling W = 230 N the weight of the box, we have:
- Component parallel to the incline:
[tex]W_{par} = W sin \theta = (230 N)(sin 13.9^{\circ}) =55.3 N[/tex]
- Component perpendicular to the incline:
[tex]W_{per} = W cos \theta = (230 N)(cos 13.9^{\circ}) =223.3 N[/tex]
using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?
The acceleration of the skateboarder on road A, road B and road C is 7,75 m/s² , 3,87 m/s² and 9,68 m/s².
Further Explanation
Given
mᴀ = mʙ = mᴄ = 62 kg
Fᴀ = 480N
Fʙ = 240 N
Fᴄ = 600 N
Asked
aᴀ, aʙ, aᴄ = ?
Solution
Based on the question, we know that the mass of road A, road B and road C are same. And, the formula of acceleration is
[tex]\boxed{\text{a} = \frac{\text{F}}{\text{m}}}[/tex]
so, we can calculate the acceleration of road A, road B and road C.
• for road A
[tex]\text{a}_A = \frac{\text{F}_A}{\text{m}}[/tex]
[tex]\text{a}_A = \frac{480 \text{N}}{\text{62 \text{kg}}}[/tex]
aᴀ = 7,7419 m/s²
aᴀ = 7,75 m/s²
• for road B
[tex]\text{a}_B = \frac{\text{F}_B}{\text{m}}[/tex]
[tex]\text{a}_B = \frac{240 \text{N}}{62 \text{kg}}[/tex]
aʙ = 3,8709 m/s²
aʙ = 3,87 m/s²
• for road C
[tex]\text{a}_C = \frac{\text{F}_C}{\text{m}}[/tex]
[tex]\text{a}_A = \frac{600 \text{N}}{62 \text{kg}}[/tex]
aᴄ = 9,6774 m/s²
aᴄ = 9,68 m/s²
-----------------------------
Learn More1. Learn More About The First Newton Law https://brainly.com/question/10454047
2. Learn More About Acceleration https://brainly.com/question/418785
-----------------------------
ANSWER DETAILGrade: Middle School
Subject: Physics
Chapter: Motion and Kinematics
Keywords: Motion, Mass, Acceleration, Newton, Newton Law, Force, Kinematics
To find the acceleration of the skateboarder, use the provided data and the equation: acceleration = (final velocity - initial velocity) / time. Plug in the values and ensure all units are consistent, then solve.
Explanation:To calculate the acceleration of the skateboarder, you need to use the data given in the table and the equations of motion. Assume the data provides initial velocity (Vi), final velocity (Vf), and time (t).
The acceleration can be calculated using the formula: acceleration (a) = (Vf - Vi) / t. Make sure the velocities are in the same units and the time is in seconds to get the acceleration in meters per second squared (m/s²).
Plug in the values from the table into this equation to find the acceleration. For instance, if Vi = 2 m/s, Vf = 4 m/s, and t = 1 s, Then the acceleration would be (4 m/s - 2 m/s) / 1 s = 2 m/s².
Learn more about Acceleration here:https://brainly.com/question/11789833
#SPJ2
Maya sets up two experiments as shown. What question is Maya most likely trying to answer? How does the type of material used in the core affect the strength of an electromagnet? How does the number of loops of wire affect the strength of an electromagnet? How does the speed at which an iron bar is removed from wire loops affect the strength of an electromagnet? How does the thickness of the wire affect the strength of an electromagnet?
Answer:
D
Explanation:
The correct answer is D
How does the thickness of the wire affect the strength of an electromagnet?
Answer:
How does the thickness of the wire affect the strength of an electromagnet
Explanation:
Generally, electromagnet strength increases with an increase in wire thickness. From the theory of electric circuit, the resistance of an electric wire is inversely proportional to the cross sectional area of the electric wire. Mathematically, we have:
R ∝ 1/A
Where:
R is the resistance of the electric wire; A is the cross sectional area of the wire. Therefore, for a large cross sectional area, the resistance will be very low, and the electric current passing through the electromagnet will be high. This will create a very high magnetic field. Thus, the question that Maya will most likely answer is: How does the thickness of the wire affect the strength of an electromagnet.
For any object, the greater the force that's applied to it, the greater its ____ will be.
Answer:
For any object, the greater the force that's applied to it, the greater its acceleration will be.
Explanation:
The statement can be explained using Newton's second law of motion that states, "A net Force 'F' applied on a body produces acceleration 'a' in it which is directly proportion to the Force applied and inversely proportional to the mass of the object."
We can conclude:
F ∝ a
Answer:
The other guy is correct. Acceleration
Explanation:
A car jack with a mechanical advantage of 6 needs to produce an output force of 600 N to raise a car. What input force is required? 6 N 100 N 600 N 3,600 N
Answer:
Input force = 100N
Explanation:
Formula
Mechanical Advantage = output force / input force.
Givens
MA = 6
Output Force = 600 N
Input Force = ??
Solution
6 = 600 / x
Multiply both sides by x
6x = (600/x)*x
6x = 600
The xs cancel. Now Divide by 6
6x/6 = 600/6
x = 100 N
Answer:
100n
Explanation:
A material that provides resistance to the flow of electric current is called a(an) (1 points)
Answer:
A Resistor.
Explanation:
Hope my answer has helped you and if not i'm sorry.