electromagnetic wav​

Answers

Answer 1

Answer:

e search mo sa utak mo kasi di mo alam


Related Questions

HELP!

Which of the following is true about having too little body fat?

Too little body fat can help increase your metabolism


Too little body fat is a health risk


Too little body fat can cause a heart attack


Too little body fat is good for your overall health


Which of the following is a Myth about fat loss?
Most people who are high in body fat eat too much


Any exercise that burns calories will cause the body's general fat deposit to decrease


You can lose body fat over time with regular physical activity if your calorie intake is less than calories burned in a given day


You can spot-reduce by exercising a specific body part to lose fat in that area

Which of the following statements is true about Metabolism?
Your metabolism speeds up naturally as you get older


Your basal metabolism is the amount of energy (calories) your body uses just to keep you living.


You can never speed up or slow down your body's metabolism


Your metabolism is not affected your heredity, age, and maturation

Answers

Answer:

too little body fat is a health risk

Explanation:

IF you do not have enough body fat you can have bad things happen to you

A golf club with mass 0.5 kg is swung at 23 m/s toward a stationary golf ball on a tee. The club barely slows down to 17 m/s, but the ball flies off the tee at 69 m/s. Calculate the mass of the golf ball in kg. Answer to 4 decimals. Help fast please. Will mark brainliest

Answers

Answer:

I gotchu fam. 0.0435 kg

Explanation:

m1v1+m2v2=m1v1f+m2v2f

(0.5)(23)+(m2)(0)=(0.5)(17)+(m2)(69)

11.5=8.5+69m2

3=69m2

0.0435 kg

A weight - lifter lifts a bell weighing 2 000 N and holds it in the air for 5 seconds. Has he done any work? Explain your answer.​

Answers

Answer:

No, he hasn't done any work.

Explanation:

In this scenario, the weightlifter hasn't done any work because even though he lifted the bell for a specific period of time, he didn't cover any distance.

Mathematically, work done is given by the formula;

Work done = force * distance

[tex] W = F * d[/tex]

Where,

W is the work done

F represents the force acting on a body.

d represents the distance covered by the body.

Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

[tex] Power = \frac {Energy}{time} [/tex]

A 1,500 kg car is at rest on a level track. The driver gives the engine gas and the car begins to accelerate forward. The car moves from 0 m/s to 27 m/s in 8 sec. What is the acceleration of the car?

Answers

Answer:

3.375 m/s²

Explanation:

Using equation of motion:

v = u + at

Here, v = 27m/s & u = 0m/s & t = 8 sec

Let the acceleration be a.

=> 27 = 0 + 8(a)

=> 27/8 = a

=> 3.375 m/s²

An experiment is carried out to measure the extension of a rubber band for different loads.

Answers

Complete question is;

An experiment is carried out to measure the extension of a rubber band for different loads.

The results are shown in the image attached.

What figure is missing from the table?

Answer:

17.3 cm

Explanation:

The image attached showed values for load, extension and initial length.

Now, the first length there is 15.2 cm and as such it's corresponding extension is 0 because it has no preceding measured length.

The second measured length is 16.2 cm. Since it's initial measured length is 15.2 cm, then the extension has a formula; final length - initial length.

This gives: 16.2 - 15.2 = 1 cm

This corresponds to what is given in the table.

For the next measured length, it is blank but we are given the extension to be 2.1 cm. Now, since the initial measured length is 15.2 cm.

Thus;

2.1 cm = Final length - 15.2 cm

Final length = 15.2 + 2.1

Final length = 17.3 cm

spheres are not perfect in space. But <> is in the cause of their shape. ​

Answers

Answer:

[tex] \boxed { \tt{gravitational \: pull(force)}}[/tex]

Which motions are the components of projectile motion? A and B B and C A and C None of these are correct combinations.

Answers

Answer:

its A and B

Explanation:

Answer:

A or A and B

Explanation:

correct on edge 2021

5. You are running at your maximum speed of 6m/s to catch a bus which is
standing at the bus stop. The bus move off with an acceleration of 1m/s when
you are 20 m from it.
A. Can you catch the bus?
B. Show graphically.​

Answers

jsudjdndkdjddjdjxixidjdjxjx

A player prefers to make high passes that lift the puck above the ice. Which stick should the
player choose?

Answers

Answer:

i dont know

Explanation:

hello


If the mass of each ball is 12 kg and they experience a gravitational force of magnitude 2.00
x 10-7 N between them, what is the distance between the balls ?

Answers

Answer:

[tex] {2 \times 10} - 7 = 12 {}^{2} \div x \\ x = 2 \times 10 - 7 \div 12 {}^{2} [/tex]

I'm just in jss2 but I read physics. this is what I think

10 pointss

For a two way mirror to work properly, light must be ___ on one side and ____ through the other side

a. reflected - transmitted
b. refracted - absorbed
c. absorbed- reflected
d. absorbed- transmitted

Answers

I think it’s reflected and then transmitted

which describes an object in projectile motion​

Answers

Answer:

Gravity acts to push the object sideways

Explanation:

projectile motion is a motion that moves along a curved path under the action of gravity only. Hope this helps!

Una pelota recorre 20 m hacia la derecha y luego 10 m hacia la izquierda, todo en un lapso de tiempo de 10 s , cual es si velocidad y rapidez?

Answers

Answer:

v = 1  i ^ m / s,   v = 1 m / s

Explanation:

In this problem we show the difference between vectors and scalars.

The average speed is

          v = Δx / Δt

The bold are vectors            

          Δx = 20-10 = 10 i^  m

           v = 10/10

           v = 1  i ^ m / s

the unit vector indicates that the velocity is on the x-axis

The average speed is

           v =Δx / Δt

           v = 10/10

           v = 1 m / s

in this case we have a scalar

list the factor that affect the speed of sound in gases​

Answers

Temperature, frequency, pressure and density

Caroline uses 20 N of force to move a box of books 10 m. How much work
did she do?

Answers

Work = (force) x (distance)

Work = (20 N) x (10 m)

Work = 200 Joules

Alannah added a strip of zinc to a beaker containing a solution of copper
sulfate, as shown in the photo. She expected to observe the immediate
formation of solid copper in the beaker but saw no evidence of a reaction.
Alannah predicted that the reaction was happening too slowly to observe.
Which statement could best explain this result?

Answers

The solution of copper sulfate was too cold

Explanation:

The lack of an observable reaction when adding a zinc strip to a copper sulfate solution could be due to the zinc not being reactive enough, the reaction occurring too slowly, or an experimental error.

What is the lack of an observable reaction?

The lack of an observable reaction refers to a situation where no visible or measurable change occurs when two or more substances are mixed or brought into contact with each other, even though a reaction was expected based on the chemical properties of the substances involved.

Here in the Question,

The lack of an observable reaction when Alannah added a strip of zinc to a beaker containing a solution of copper sulfate could be due to the following reasons:

Zinc and copper sulfate do not react: It is possible that the zinc strip and copper sulfate solution do not react with each other, leading to no observable change. This could occur if the zinc strip is not reactive enough to displace the copper in the copper sulfate solution.

Reaction is slow: Another possibility is that the reaction between zinc and copper sulfate is occurring but is happening too slowly to be observed. In this case, the reaction rate may be too low to produce an observable amount of solid copper in the beaker in a short period of time.

Experimental error: It is also possible that an error was made during the experiment that prevented the expected reaction from occurring. For example, the concentration of the copper sulfate solution may have been too low, or the zinc strip may have been coated with a layer of oxide that prevented it from reacting with the solution.

Therefore, Zinc may not be sufficiently reactive, the reaction may proceed too slowly, or there may have been a mistake in the experiment if there was no detectable reaction when a zinc strip was added to a copper sulphate solution.

To learn more about redox reaction click:

brainly.com/question/2671074

#SPJ2

In an example food chain, mice only eat plants, and then snakes eat the mice. These snakes are examples of consumers.

a Quaternary
b Primary
c Secondary
d Tertiary​

Answers

C snake are secondary

Answer all of these questions and you will get the brain list

Answers

Answer:

1. Mechanical energy = 298.4 Joules.

2. Mechanical energy = 2140 Joules.

3. Mechanical energy = 0.2838 Joules.

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.

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

[tex] P.E = mgh[/tex]

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Given the following data;

1. Kinetic energy = 182.2 J

Potential energy = 116.2 J

To find the mechanical energy;

Mechanical energy = kinetic energy + potential energy

Mechanical energy = 182.2 + 116.2

Mechanical energy = 298.4 Joules.

2. Mass = 40kg

Velocity = 3m/s

Height = 5m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the mechanical energy;

We would determine the kinetic and potential energy respectively.

K.E = ½mv²

K.E = ½*40*3²

K.E = 20*9

K.E = 180 Joules.

P.E = mgh

P.E = 40*9.8*5

P.E = = 1960 Joules

Mechanical energy = K.E + P.E

Mechanical energy = 180 + 1960

Mechanical energy = 2140 Joules.

3. Mass = 0.002kg

Height = 3m

Velocity = 15m/s

To find the mechanical energy;

K.E = ½mv²

K.E = ½*0.002*15²

K.E = 0.001*225

K.E = 0.225 Joules.

P.E = mgh

P.E = 0.002*9.8*3

P.E = = 0.0588 Joules

Mechanical energy = K.E + P.E

Mechanical energy = 0.225 + 0.0588

Mechanical energy = 0.2838 Joules.

what color of colors of light does red glass absorb

Answers

Red glass transmits red light and absorbs blue and green light.

I hope this helps! (^_^)

PLEASE HELP—ITS PHYSICS AND I NEED ANSWERS ASAP

Answers

The answer is Point D.

Brainliest for correct answer :))

Answers

Choose the 2nd Option.....

Second. They fall freely At an acceleration of 10ms^-2 troughout

Brainliest for correct answer :)

Answers

Answer:

B

Explanation:

The answer is b that is the final speed - initial speed divided by the time taken

Please mark as brainliest

B. If unread carefully, that is the only answer that works.

To 3 significant digits, what is the period of the pendulum using the equation for the period of a simple pendulum? Hint, the information you need is on the right side of the screen. The equation for the period of a pendulum is: T = 24 V​

Answers

Answer:

1.42 seconds

Explanation:

T=2*pi*(sqrt length over gravity)

T=2*pi*(sqrt 0.5/9.8)

T=1.4189

Round to 3 significant digits

T=1.42 seconds

Explain why tissues in multicellular organisms are supplied with nutrients using a circulatory system.

Answers

Answer:

The tissues in a multicellular organism requires a circulatory system in other to deliver oxygen and food to the tissues while also removing carbon dioxide and metabolic wastes due the complexity of these activities

Explanation:

Multicellular organisms are organisms that are made of more than one cell. the more cells an organism has the more complex certain activities might be for the organism hence the tissues in a multicellular organism requires a circulatory system in other to deliver oxygen and food to the tissues while also removing carbon dioxide and metabolic wastes

Ocean breezes are due to which method of heat transfer?
A. conduction
B. convection
C. greenhouse gases
D. radiation
E. geothermal energy

Answers

It’s convection. Land warms and cools faster than water, so At night the heat moves from the land into the ocean. That kind of movement is called convection, where heat moves to cool places.

Ocean breezes are primarily due to convection, which is the transfer of heat through the movement of fluids or gases.  The correct option is B.

What is convection?

Convection is a method of heat transfer that occurs in fluids (liquids and gases) and involves the movement of material carrying thermal energy. In convection, heat is transferred by the movement of hot fluid from one place to another, which then causes the transfer of heat from the hot fluid to the cooler fluid or surface it comes into contact with.

Convection can occur in two ways:

Natural convection: It occurs due to the density differences caused by temperature variations within a fluid. When a fluid is heated, its density decreases, making it lighter and causing it to rise. As it rises, it cools, becomes denser and falls back down, creating a cycle that is known as a convection current.

Forced convection: In this type of convection, a fluid is forced to flow over a surface or through a channel, by an external agent like a fan or pump. The forced flow enhances the rate of heat transfer from the surface or through the channel, as compared to natural convection, where the fluid flow is driven only by buoyancy forces.

Convection is a very important process for heat transfer in many natural and industrial applications, including heating and cooling systems, meteorology, oceanography, and more.

Here in the Question,

Ocean breezes are primarily due to convection, which is the transfer of heat through the movement of fluids or gases. As the sun heats up the surface of the ocean, the air above it also heats up and rises. This creates a low pressure area that draws in cooler air from over the land, resulting in a breeze that blows from the ocean towards the shore. This is why sea breezes are generally felt during the day, when the land is warmer than the sea, and why they tend to die down at night, when the opposite occurs.

Therefore, The correct answer is B i.e convection.

To learn about the difference between conduction and convection click:

https://brainly.com/question/13104912

#SPJ7

Calculate the amount of heat needed to convert 0.8 kg of ice at -19 °C into water at 29 °C.

Answers

i’m not sure maybe attach a image or something

Convection currents will transfer heat throughout a gas until what condition arises?

A.
The gas condenses and forms a liquid.

B.
The gas particles stop moving entirely.

C.
The gas has the same temperature throughout.

D.
The gas has no thermal energy in it.

Answers

Answer:

C

Explanation:

pls mark brainlest ty

have a good day

The gas has the same temperature throughout. (C)

Which is a disadvantage of using wind as an energy source?

It may be unreliable.
It is not naturally occurring.
It produces a lot of waste.
It generates large amounts of electricity.

Answers

Answer:

it produces

Explanation:

a lot of waste

In an ecosystem,disadvantage of using wind as an energy source  is that it produces a lot of waste.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/13979184

#SPJ7

A glass window (n = 1.52) has a
uniform layer of ice on it (n = 1.31).
What is the critical angle for a ray
trying to pass from glass to ice?
(Water n = 1.33, Air n = 1.00)
(Unit = deg)
HELP PLSS!!

Answers

Answer: 59.5 deg

Explanation: In this problem, we are giving 1.31 as n2 and 1.52 as n1. Using the formula of critical angle= arcsine(n2/n1) we get the equation critical angle=arcsine(1.31/1.52) from there, you divide 1.31 by 1.52, and get 0.862.

On your calculator you then should press 2nd and then the sine button to get sine^-1 (arcsine) and in the parenthesis after arcsine put in 0.862, the answer you get will be 59.5.

What is the equivalent resistance of a circuit that contains four 75.0 resistors connected in parallel with a 100.0 V battery?

Answers

Answer:

18.75 ohms.

Explanation:

From the question,

]When four resistors are connected in parallel in a circuit,

The equilvalent resistor is given as

1/R' = 1/R₁+1/R₂+1/R₃+1/R₄............................Equation 1

Where R' = Equivalent resistor.

Given: R₁ = R₂ = R₃ = R₄ = 75.0 ohms.

Substitute these values into equation 1

1/R' = (1/75)+(1/75)+(1/75)+(1/75)

1/R' = 4/75

R' = 75/4

R' = 18.75 ohms.

Hence the equivalent resistance = 18.75 ohms.

Answer:

18.8 ohms

Explanation:

apax

Other Questions
plsss help ill give brainliest if you give a correct answer 9. Which of the following is theleading use of computer? What does prior knowledge, as it is used in predicting, mean? a. Everything that I have ever learned c. Knowledge I was born with b. The knowledge that I already have on the subject d. none of the above Please select the best answer from the choices provided A B C D The pages of a book are numbered consecutively, beginning with 1. The digit 7 is printed 25 times in numbering the pages. What is the largest number of pages the book can have? 8 baseball players share 18 apples Read the following claims:1. Too much playing time on one sport causes injuries in athletes.2. Injuries are caused when athletes play too many different sports.Which claim is correct? Support your choice with relevant data or evidence from the article. Then, justify why the data or evidence supports the claim. List one limitation of the law of superposition. Five whole numbers are written in order.47xy11The mean and median of the five numbers are the same.Work out the values of x and y.(3 marks) Joseph Stalin placed a high value on motherhood because he wanted women to produce more workers. recognized the hard work involved in parenting. valued womens overall contributions to society. had great respect for his own mother. Which of these sentences uses words sparingly?It was a very special, wonderful day for Joe and the person who was with him, his best friend Marc.It was a special day for Joe and MarcAll of the wonderful, lovely, beautiful gifts that I received in the celebration of the day that I was born were wrapped and tied withbeautiful paper and ribbons.all of these What is the main idea of Katz v. United States? Why is that important to the DLK case? At the music store Katelyn bought 2 packs ofguitar strings and a music book. The book cost$18.00. Her total purchase was $46.00. Howmuch is one pack of strings? why do you think gladiatorial contests and public games were so popular among ancient Romans? Help ASAP If you know what to do comment if u dont Ill report you ! Points added Which one, the biography or the interview, presented MLKs perspective on non-violent protest the best? Justify your answer. Are there similarities with the musical instruments of South Asian and Middle East? Explain. What was the fear of the United States about both Korea and Vietnam at the end of World War 112They feared the two countries would become communist.BThey were afraid both countries would be taken over by the FrenchThey were afraid the two countries would threaten the new government of ChinaDThey worried that they would no longer be able to trade with Korea and Vietnam. Find the perimeter of the figure to the nearest hundredth. due today Danny reads for one half hour every day. At the end of four weeks, how many hours has Danny read? If the scale factor of Figure A to Figure B is 7:2 find the perimeter of Figure A.