Answer:
0.78 m
Explanation:
us the formula
speed = frequency x wavelength
343 = 440 x wavelength
343 / 440 = wavelength
wavelength = 0.78 m
I think the last option, you wrote wrongly, it is supposed to be 0.78 not 0.078 .
if you think I am wrong please do tell me, I will redo this.
hope this helps
Your personal hygiene is more important to avoid you becoming ill, more so than spreading germs.
True
False
PLEASE HELP ASAP!!
Select the correct answer.
According to this map, which county in Florida is most in need of safe rooms and hurricane ties?
A.
Hillsborough
B.
Jefferson
C.
Palm Beach
D.
Miami-Dade
Answer:
I think it's Miami-Dade
Explanation:
i hope this helps
Answer:
it is miami-dade!
Explanation:
Use the scenario below for questions 4-7.
A rocket launched at a 60-degree angle has a launch velocity of
31.00 m/s.
4. What is the magnitude of the rocket's initial vertical velocity?
a. 10 m/s
b. 15.5 m/s
c. 26.85 m/s
d. 31 m/s
What is the net force acting on a jet that has a mass of 130,000kg and it accelerates at a rate of 6m/s as it takes off
SOMEONE PLEASE HELP ME
The average kinetic energy of the particles of two pieces of iron at the same temperature and mass would be __________.
Question 1 options:
Different
The same
Not equivilent
With in 500 degrees of eachother
Answer:
The same.
Explanation:
Temperature is a measure of the average kinetic energy of a substance; if two pieces of iron have the same temperature, then their particles will have the same amount of average kinetic energy.
Answer 1 - The average kinetic energy of the particles of two pieces of iron at the same temperature and mass would be the same
Answer 2 - The particles of an object move FASTER when the temperature increases
Answer 3 - When a tight fitting lid is run under hot water, the lid
E/X/P/A/N/D/S as the temperature increases.
Answer 4 - I dont know sorry!
Answer 5 - What happens when something reaches absolute zero?
The p a r t i c l e s completely stop moving
What is the cheetahs momentum?
Answer:
Momentum is mass*velocity. Cheetah: 74*31 = 2294 kg-m/s.
HELP PLEASE
44. Two wave pulses are traveling along a string
toward each other as represented in the diagram
below.
(D is interference)
The phenomenon of interference occurs when two wave pulses are traveling along a string toward each other. Option D is correct.
What is the interference of waves?The result of two or more wave trains flowing in opposite directions on a crossing or coinciding pathways. This phenomenon is known as the interference of waves.
The effect is the sum of the individual wave amplitudes at each site where more than one wave is present.
When two wave pulses are traveling along a string toward each other. They meet and the phenomenon is occur known as interference.
Hence the phenomenon of interference occurs when two wave pulses are traveling along a string toward each other.
To learn more about the interference of waves refer to the link;
https://brainly.com/question/16098226
What has more kinetic energy 15 kg ball rolling north at 15 m/s or a 15 kg ball rolling backwards at 7m/s
Answer:
15 kg ball
Explanation:
Classify each substance as either a conductor or insulator.
A sample of mercury:
✔ conductor
A piece of glass:
✔ insulator
A rubber hose:
✔ insulator
A negatively ionized lithium paste:
✔ conductor
The correct classification of each substance is as follows:
A sample of mercury: conductorA piece of glass: insulatorA rubber hose: insulatorA negatively ionized lithium paste: conductorWhat are conductors and insulators?A conductor is a substance that can transmit electricity, heat, light or sound while an insulator is a substance that does not transmit heat, sound or electricity.
Conductors are usually metals while insulators are usually non-metals. Examples of conductors include;
IronAluminumCopperExamples of insulators include;
GlassPaperWoodSilkTherefore, the correct classification of each substance is as follows:
A sample of mercury: conductorA piece of glass: insulatorA rubber hose: insulatorA negatively ionized lithium paste: conductorLearn more about conduction at: https://brainly.com/question/18084972
#SPJ1
Answer:
Explanation:
E2020
Help!Yall get brainliest
Answer:
Explanation:
Good sources include barley, oatmeal, beans, nuts, and fruits such as apples, berries, citrus fruits, and pears. Many foods contain both soluble and insoluble fiber. In general, the more natural and unprocessed the food, the higher it is in fiber. There is no fiber in meat, dairy, or sugar.
What determines the speed of a wind?
o The difference in air pressure between air masses.
O The moisture content of air over land.
O The altitude of the warmer air mass.
The moisture content of air over water.
Answer:
Answer: The difference in air pressure between air masses.
Answer:
The difference in air pressure between air masses.
Explanation:
The difference in air pressure, just like letting the higher-pressure air out of a balloon, determines the speed of the wind.
What is the velocity of a 24 kg object with 108 kg m/s of momentum?
A) 3 m/s
B) 4.5 m/s
C) 6 m/s
D) 84 m/s
Answer:
The velocity of the object is 4.5 m/s
Explanation:
Momentum is equal to mass times velocity. We can rearrange that relationship to say that velocity is equal to momentum divided by mass. With that we can say:
v = 108 kg m/s / 24kg
v = (108 / 24) m/s
v = 4.5 m/s
DUE IN 4 HOURS! HELP! WILL MARK BRAINLIEST IF DONE WITHIN THE HOUR!
Maisey is running 12mph and comes to an abrupt stop in 3 seconds when she hears her name called. What is her acceleration?
Answer:
~ 0.001 m/s^2
Explanation:
If you convert 12 miles per hour to, miles per second, it makes this easier to calculate, so do that first
12m/ 1 hour * 1 hour/ 60 mins * 1 min/ 60 sec = ~0.003333 miles per second.
Next remember that acceleration = velocity/time
So our new velocity: 0.003333 over time: 3 seconds = the acceleration.
0.003333/3 = 0.001 m/s^2
what is the physical properties of radon
Answer:
1) Radon is colorless at standard temperature and pressure and it is the most dense gas known. At temperature below it's freezing point is has a brilliant yellow phosphorescence. It is chemically unreactive, it is highly radioactive and has a short half life.2) 7.5 times heavier than air and more than 100 times heavier than hydrogen. The gas liquefies at −61.8 °C (−79.2 °F) and freezes at −71 °C (−96 °F). On further cooling, solid radon glows with a soft yellow light that becomes orange-red at the temperature of liquid air (−195 °C [−319 °F]).Explanation:
I think this much is enough , as more information is given in other answer if more is needed just comment me I will answer you there only.An optical device that reflects light ?
Answer:
Mirror
Explanation:
2. The weights of four objects with different masses have been calculated to show how much each object would weigh on four different planets.Based on the table, which object would have the largest mass and greatest weight on Earth?
Weights of Four Objects on Four Planets
Planet 1
B 10 N
C 1 N
D 20 N
Planet 2
A 10N
C 0.2 N
D 4 N
Planet 3
A 100 N
B 20 N
D 40 N
Planet 4
A 5 N
B 1N
C 0.1 N
Answer:
d
Explanation:
Carbon (C) is an element found in living organisms. How would carbon be classified in the hierarchy of organisms?
Answer:
Explanation:
A cell
Тесты имеют различные нормы-шкалы значений: социальные, возрастные и т.П. Индивидуальный показатель теста соотносится с его нормой. Норма теста обычно определяется в результате тестирования большой выборки испытуемых определенного возраста и пола и усреднения полученных оценок с их последующей дифференциацией по возрасту, полу и ряду других показателей. Норма теста - это средний уровень развития большой совокупности людей, похожих на данного испытуемого по ряду социально-демографических характеристик. То есть, это средний диапазон значений на шкале измеряемого свойства.
Hank's mother got tired of everyone's cell phones ringing during dinner, so she wrapped all
of the cell phones in aluminum foil at dinnertime. Which of the following best explains how
Hank's mother solved her problem?
Cell phone signals are electromagnetic waves, which are absorbed by the aluminum foil
Cell phone signals are electromagnetic waves, which are reflected by the aluminum foil
Cell phone signals are mechanical waves, which are absorbed by the aluminum foil
O Cell phone signals are mechanical waves, which are reflected by the aluminum foil
Answer:
Cell phone signals are electromagnetic waves, which are reflected by the aluminum foil
Answer:
I think the best answer would be the first but am I the only one wondering why the mom didn't just turn off the phone but instead she had to be extra and wrap them up like a gift to give them after dinner.
A wave has a period of 4 seconds. Find it’s frequency.
Answer:
4 x the frequncy
Explanation:
So 4 x the number
A liquid has a specific heat of 9 J/g • °C and a solid has a specific heat of 3 J/g • °C. Which
substance, the solid or liquid will heat up faster? Which will cool down faster?
Explanation:
substances have been in direct sunlight for up to 60 minutes. ... cool the fastest? ... 0.60 J/g °C. Match & then label each substance with its specific heat capacity ...
difference between sold and liquid
Explanation:
Solids have closely packed particles and vibrate about a fixed position, they also have a fixed volume.
liquid have close particles but which are able to move with a bit of kinetic energy, for this reason they have no fixed volume but take the volume of the container or vessel
How many significant figures does 1740200 have?
A book is sitting on a table. Which of the following is true about the table? O A. It is pushing up on the book. O B. It exerts no force on the book at all. O C. It is pulling down on the book. D. It can affect the mass of the book.
Answer:
yes it does exert a force, it pushes it up
Explanation:
this is called normal force
if it didn't exert a force the book would keep going down
according to newton every force has an equal amd opposite reaction
so the book exerts a force on the table and vice versa
hope this helped
name one material through which continuous flow of charge can be produced from chemical energy
Answer:
Battery.
Explanation:
A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell. A battery can be made up of one or several (like in Volta's original pile) electrochemical cells
Please answer quick - You find a chain of volcanoes along a coast on land, not too far inland from
the ocean. The region experiences frequent large earthquakes. What type of
plate boundary is this? What types of plates are involved? Where is this type of
boundary found in California?
Question 1 of 14 Which of the following statements describes a perfectly inelastic collision? O A. An ice hockey player picks up a trophy as he slides past it. O B. A baseball bat hits a baseball into the outfield. O C. A surfer falls off of his surfboard when a wave hits him. D. Two birds collide in midair and fly off in different directions.
Answer: A. An ice hockey player picks up a trophy as he slides past it
Explanation:
A PE X
The statement that best describes a perfectly inelastic collision is
C. A surfer falls off of his surfboard when a wave hits him.
What is collision?A collision is the interaction between two bodies in such a way that the momentum and velocity of one body gets changed due to the presence of other body. There are three types of collision-
1. Elastic collision
2. Inelastic collision
3. Perfectly inelastic collision.
In all types of collision , the momentum of the system before collision and after collision always remains same or we can say that momentum is conserved in collisions
What is elastic collisionAn elastic collision is the one in which kinetic energy is also conserved and coefficient of restitution is one. Both the bodies move separately with different velocities after elastic collision.
What is inelastic collision ?In inelastic collision there is a loss of kinetic energy and coefficient of restitution is less than one.
What is perfectly inelastic collision?In perfectly inelastic collision there is maximum loss of kinetic energy and coefficient of restitution is zero. Both the bodies stick together after collision and move with same velocity
What is coefficient of restitution ?Coefficient of restitution is the ratio of relative velocity of separation after collision to relative velocity of approach before collision.
A surfer falls of his surfboard when a wave hits him is an example of perfectly inelastic collision because in this when water hits the surfers he falls of and sticks to the water , and will also now move with the velocity of water .
So when the surfer falls off his surfboard when a wave hits him is perfectly inelastic collision.
To know more on collision here
https://brainly.com/question/13876829?
#SPJ2
HELPPPP WILL MARK B IF CORRECT!!!!
A tugboat is pulling a barge into a harbor. The barge is exerting a force of 3000 N against the tugboat.
Available options are:
A. –4500 N
B. –2500 N
C. 2500 N
D. 4500 N
Answer:
-4500 N
Explanation:
Given that we have F₁ = 3000N? (force of the barge)
the force of the tugboat is F '
To pull the barge, the force of the tugboat must be greater than or equal to the force of the barge.
Hence, according to Newton's third law which states that for every action or force in nature, there is an opposite reaction.
Therefore considering the available option the correct answer is "- 4500N, " this is because it is greater than the force of the barge and it's in opposition to the force exerted.
Answer:
The answer is -4500 N
Explanation:
. ........... is a mirror with a flat reflecting surface and is made of ordinary glass.
Answer:
Plane mirror.
Explanation:
A plain mirror is a mirror with a flat reflecting surface and is made of ordinary glass.
Reflection can be defined as a phenomenon which typically involves a change in the direction of a ray of light or waves as it falls on a smooth surface.
Simply stated, reflection occurs when a ray of light or wavefronts bounces off a smooth surface such as a plane mirror.
Generally, the angle of reflection equals the angle of incidence when a light ray strikes or hits a plane mirror.
The properties or characteristics of the images formed by a plane mirror include;
I. They are virtual and erect (upright).
II. It is the same size as the object formed.
III. It has the same distance from the plane mirror as the distance of the object from the mirror.