A wave sent out from a source is reflected back
in 1x10 -3 sec. If the velocity of the wave
is 3x 10²m/s what is the distance of the reflecting
Surface from the source​

Answers

Answer 1

Answer:

Hdgdjdiehebhsiducggdgdhduudhd


Related Questions

What is a gear. Please give detailed explanation

Answers

Answer:

gear is part of vehicle.it helps.

Answer:

Explanation:

A gear is a device that transfers mechanical energy from on point to another.

10 A ship is made of 4000 m' steel of density
7900 kgm^3
a. What volume of fresh water
1000 kg m) would the ship need to
displace in order for it to float?

b. Explain how the design of the ship enables
it to displace this much water.​

Answers

Answer:

Explanation:

mass of ship = volume x density

= 4000 x 7900 = 316 x 10⁵ kg

The ship must displace water equal to weight of ship that is 316 x 10⁵ kg .

If volume of displaced water be V .

V x 10³ is mass of displaced water

V x 10³ = 316 x 10⁵

V = 31600 m³.

b ) Now the volume of steel making ship is only 4000 m³ so if it is in the form of a lump , it will displace only water equal to its volume ie 4000 m³ . So in order that it may displace water equal to volume 31600 m³ , it must be given shape so that it is hollow .

What do you use to write on a blackboard? ​

Answers

Answer:

Chalk, expo markers. Why?

Answer:

Chalk

Explanation:

please mark as brainliest

please help me anyone i will mark brainliest

Answers

Answer:

for 4.567 I can't tell if it x [tex]10^{3}[/tex] or x [tex]10^{5}[/tex] so:

answer using x [tex]10^{3}[/tex] = 0.0000644697N

answer using x [tex]10^{5}[/tex] = 0.00644697

Explanation:

use equation F = GMm/[tex]R^{2}[/tex]

RNA is ______________________stranded. It _______________ leave the nucleus, unlike DNA. It still consists of __________________, however the _____________ in the backbone of the strand is different than in DNA.
The nitrogenous bases are different in RNA; instead of Thymine, Adenine now pairs with _____________________.

Answers

Answer:

See below

Explanation:

RNA is single-stranded. It does leave the nucleus, unlike DNA. It still consists of strands, however, the ribose in the backbone of the strand is different than in DNA.

The nitrogenous bases are different in RNA; instead of Thymine, Adenine now pairs with Cytosine.

Explain the benefits of understanding sound waves properties in real life.

Answers

Answer:

The vibrations from sound waves cause our ears to send signals to our brains to create sound. The speed of sound waves will determine the sound's pitch, or how high or low something sounds. Sound waves are important because they allow us to hear important messages and emergency signals to protect ourselves.

Explanation:

I hope this helps :)

show that for a clósed organ pipe only odd harmonics are present wheras for an open organ pipe all the harmonics are present​

Answers

Answer:

For a closed organ pipe, the point at the closed end is always a node, 'N' while the open end is always an antinode, 'A'

Therefore, for a closed organ pipe, we only have;

NA = N↔A = First harmonics = f₁

NANA = NA↔AN↔ NA = Third harmonics, = f₃ = 3·f₁

NANANA = NA↔AN ↔ NA ↔ AN ↔ NA = f₅ = 5·f₁

It can also be shown that for a closed organ pipe, only f₇, f₉, f₁₁, ... are present

Therefore, a closed organ pipe has only odd harmonics present

For an open organ pipe, we have;

ANA = First harmonics = f₁

ANANA = ANA ↔ ANA = Second harmonics = f₂ = 2·f₁

ANANANA = ANA ↔ ANA ↔ ANA = Third harmonics = f₃ = 3·f₁

Similar relationship exist for f₄, f₅, f₆...

Therefore, for an open organ pipe, all harmonics, (multiples of the fundamental, f₁) are present

Explanation:

Two fixed charges, q1 = +1.07µC and q2 = -3.28µC, are 61.8cm apart. Where may a third charge be located so that no net force acts on it?

Answers

Answer:

12...lollll

Explanation:

.

Answer:

Can u re-write the question please, I dont understand?

Explanation:

What is the kinetic energy of a 0.500 kg toy car moving at a state of 1.50 m/s

Answers

Answer:0.563

Explanation:

The kinetic energy produced in a toy car is equal to 0.563 J.

What is the kinetic energy and potential energy?

The energy exhibited by a moving body because of its motion is said to be its kinetic energy. Work should be done which can change the kinetic energy of a moving object.

The kinetic energy of a moving object can be determined from the formula mentioned below:

K.E. = ½mv²     where ‘m’ and ‘v’ is the mass, velocity of the object.

Potential Energy (P.E.)is energy that is stored in an object due to its position and can be expressed as P.E = mgh where h, m, and g are the height, mass, and gravitational acceleration respectively.

Given, the mass of the toy car =, m = 0.500 Kg

The velocity of the toy car, v = 80 m/s

The kinetic energy = (1/2)× 0.500 ×(1.50)²

K.E. = 0.563 J

Learn more about kinetic energy, here:

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On Earth, a scale shows that you weigh 585 N. What would the scale read on the Moon (g = 1.60 m/s2)? N

Answers

Answer:

95.51 N

Explanation:

First, find the mass in kg:

Fg = 585 N

Fg = m*g

585 N = m*9.8 m/s^2

m = 59.69 kg

Then, to find your weight (Fg) on the moon, you use the same equation of

Fg(moon) = m*g, except this time g = 1.60 m/s^2

Fg(moon) = 59.69 kg * 1.60 m/s^2

Fg(moon) = 95.51 N

Hope this helps!! :)

what are some activities you can do on a regular basis? Physical education​

Answers

activities you can do on a regular basis for physical education​?

If so

WalkingGardeningDancingBicyclingSwimmingYoga

20 points + Brainliest. Please help!

Which process represents a charge from disorder to order?
A. The free expansion of a gas into a vacuum
B. The condensing of a gas to a liquid
C. The melting of an ice cube in warm water
D. The flow of heat from the interior of a refrigerator to the exterior.

Answers

Answer:

C. the melting of an ice cube in warm water

Answer:  d,a,b,c

i think i dont know if u asked for this answr. but i hope this helped

Explanation:

1. Calculate the momentum of each car before the collision: SHOW YOUR WORK!

Pred p = mxv> (1 kg) x (+5) = +5 kg m/s

Pblue: P = mxv

(1 kg) x (0) = 0 kg m/s

Answers

Answer:

Momentum of red car = 5kgm/s

Momentum of blue car = 0kgm/s

Explanation:

Momentum = mass × velocity

For the red car

Mass = 1kg

Velocity = 5m/s

Momentum of the red car = 1kg × 5m/s

Momentum of the red car = 5kgm/s

For the blue car.

Mass = 1kg

Velocity = 0m/s(shows that the blue car is stationery)

Momentum = 1kg ×0m/s

Momentum of the blue car = 0kgm/s

The speed of a 1200 kg car increases from 5 to 29 m/s in 12 s.
What force accelerated the car?

Answers

Answer:I think I’m not sure But I think that the force that would be accurated the car would be friction or something like that and to solve the equation you would do f/m

Explanation:

It just makes sense

4. Determine the net force for the free-body
diagram
Fnorm = 40N
Ffrict =28N
Fapp =44N
Fgrav = 40N

Answers

Answer:

Fapp =44N is the correct answer

Explanation:

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Example 4:
Find the index of refraction for diamond if the speed of light in diamond is 1.24 x 10m/s
Use the proper FORMAT

Answers

Answer:

Given speed of light in diamond =1.24*10m/s

speed of light (c) =3*10^8m/s

refractive index of diamond =3*10^8/1.24*10=2.41*10^7m/s

Emily is pushing a toy sand truck. She realizes it is much harder to push the truck when it is full of sand than when it is empty. What is the reason for this?

An object with a greater mass requires a smaller force to accelerate.
An object with a greater mass requires a greater force to accelerate.
An object pushed with a greater force has a greater mass.
An object pushed with a greater force has less mass.

Answers

Answer: An object with a greater mass requires a greater force to accelerate.

Explanation:

Answer:

An object with a greater mass requires a greater force to accelerate.

Explanation:

I took the test.

Which will increase the energy of motion of water molecules?

Answers

A) add heat will be the answer

A hiker has determined which hiking path to take through a national forest (A is the starting point and B is the final destination). Below is the map of that trail. What does the red line most likely represent?
Total displacement from A to B
Total distance of the path from A to B
Both Total displacement and distance of path from A to B
The shortest path between A and B


In the following equation, Vi represents initial velocity and Vf represents final velocity. The equation for average acceleration is a = (Vf - Vi)/t. Solve this formula for t.
t = a/(Vf - Vi)
t = (Vf - Vi)/a
t = a(Vf - Vi)
t = (Vf - Vi)a

Select the 2 equations that show the same correct relationship between Average Velocity, Distance, and Time.
d = vt
t = v/d
v = t/d
v = d/t

NEED HELP ASAP PLEASE HELP

Answers

Haisjdbdjidwjsnididjhsuwiwkbicidjjss djdjdjbe djdisjs disioqke Baud je eifjenjeoe Didier ejdisjjw ejdisjnw ejdogolwmw. Fjivodkebrjivkenei rjridiwjw tjcijdnfuieiowjfn

If you are startled by a sudden loud noise, your (____)
activated.
nervous system is
A. autonomic
B. parasympathetic
C. somatic
D. sympathetic

Answers

Answer:

D. sympathetic

Explanation:

It would be C sympathetic since it was triggered by a event that was startling!

-A 180 kg hippo is riding a bicycle at a speed of 6.0

m/s. Out of nowhere, a chimpanzee runs out in the

hippo's path and he must slam on his brakes. If the

bicycle's brakes exert a force of 1600 N, how

long will it take to stop the bicycle? _s

Answers

Answer:

0.0675 seconds

Explanation:

From the question,

We apply newton's second law of motion

F = m(v-u)/t.................... Equation 1

Where F = force exert by the brake, v = final speed, u = initial speed m = mass of the bicycle, t = time.

make t the subject of the equation

t = m(v-u)/F................... Equation 2

Given: m = 180 kg, u = 6.0 m/s, v = 0 m/s (comes to stop), F = -1600 N ( agianst the dirction of motion)

Substitute these value into equation 2

t = 180(0-6.0)/-1600

t = -1080/-1600

t = 0.0675 seconds.

The Sex Equity in Education Act requires educational institutions to distribute a sexual harassment policy to:
A._ faculty and parents.
B._parents and administrators. C._students and administrators.
D._faculty and students.​

Answers

A.) faculty and parents

in a nuclear plant, 1 * 10 ^27 J of energy is available from mass conversion How much mass was lost ?

Answers

Answer:

[tex]1.2\times 10^{10}\ kg[/tex]

Explanation:

Given that,

The energy of the nuclear plant, [tex]E=10^{27}\ J[/tex]

We need to find how much mass wast lost.

The relation between energy and mass is given by :

[tex]E=mc^2[/tex]

Where

c is speed of light

[tex]m=\dfrac{E}{c^2}\\\\m=\dfrac{10^{27}}{(3\times 10^8)^2}\\\\m=1.2\times 10^{10}\ kg[/tex]

So, [tex]1.2\times 10^{10}\ kg[/tex] of mass was lost.

Is pulling a dog a contact force or a non contact force

Answers

A contact force since you are making physical contact with the dog

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Use the information and diagram to answer the following question.
A Physics student builds a circuit as shown with the help of a battery, wires, switch and 2 light bulbs as shown.
Which of the following circuit elements should the student use to cause the bulbs to dim but not go out?

Answers

Answer:b

Explanation:

Because I don’t know

The circuit elements should be placed according to the diagram given in option B to cause the bulbs to dim but not to go out. Thus, the correct option is B.

What are the elements of an electric circuit?

An electric circuit is the continuous closed path along which the electric current flows from the positive terminal of the circuit to the negative terminal of the battery. An electric circuit can be constructed easily by joining all the elements of the circuit together in order.

The components of an electric circuit are:

A cell or a battery, which is the source of electricity.

The connecting wires which act as conductor to flow electric current.

A key or a switch to control the current through the circuit.

A bulb or electric device which act as a load to the circuit.

The length of the electric wire increases the resistance through the circuit and decreases the current flowing through the circuit which in turn dims the bulb.

Therefore, the correct option is B.

Learn more about Electric circuit here:

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What is 6.02 x 10^4 in standard notation

Answers

I believe you mean 6.02*10^7 but you want to shift the decimal 7 times to the right which would be 60200000 (:

State galileo's law of inertia​

Answers

Answer:

Galileo's law of inertia states that; if no net force acts on an object, the object maintains its state of motion.

(The first law of motion is also known as Galileo's law of inertia)

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

Answers

see below

Explanation:

let One Direction to be the positive and the other direction be negative

let right = positive

left = negative

up = positive

down = negative

a) 100 - 50 = 50N

b) 500 - 330 = 170N

c) 70 - 70 = 0 N

hope this helps

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10. CALCULATE: Find the amount of power used in
each of the following examples. Show your
calculations.
a. You use a force of 10 N to move a box
100 m in 10 seconds.
b. An athlete lifting weights does 900 J of
work in 1 second.
c. A truck does 30,000 J of work in
15 seconds.
d. A furniture mover uses a force of 150 N to
push a large trunk 5 m across the floor in
5 seconds.

Answers

Answer:

Please find attached pdf

Explanation:

What is an example of reference point

Answers

Answer:

An example of a reference point that is moving is when you look out the window of a car and notice that you are moving faster than the car next to you. You use that other car as a reference point to determine that your car is moving.

Explanation:

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describe what movement causes an electric current in a wire A 6 Sentence paragraph that compares the beliefs/values in Sparta and Athens Does Anjana owe any money? into statement Dion is a police officer who gets called to a disturbance at a retail store. A teenager has been begging for money, and the store owner wants the teenager arrested for harassing customers. Dion knows the teenager lives with his grandfather and the family has not been able to make ends meet financially. Dion decides not to arrest the teenager. Instead Dion gives the teenager a warning and provides him with some information on where to go to for help. A.Ethical B.Unethical C.illegal Your reasons : 1.2.3. The cost to produce the master disc of a DVD is $2000, while additional discs costs $4 each. Determine a profit function P that results if the DVDs are sold for $15. Find the profit from selling 2800 DVDs. Find p(x) At your first job you make $1200 a month of that you save $200 a month. Your goal is to save 20% did you reach your goal? ASAP PLEASEWhich of the following would be an effective way for Mexico to decrease the number of its citizens migrating away from the country? A. Guatemala builds a wall across its border with Mexico. B. Mexico enforces fewer anti-drug laws. C. United States increases anti-poverty efforts for residents of the USA. D. Mexico uses tax money to build more schools. Which three side lengths best describe the triangle in the diagram? 936 292 round to the nearest hundred thousand Sometimes Earth's layers are called crust mantle, and core. These are the names of Earth's layers based on their ___ composition. Give an example of a sports performer that would require a high level of CV endurance. Caroline took a math test and got 15 out of 25 correct. What was the percent of questions she gotcorrect Solve the linear system of equations using addition. Graph the equations to verify your solution. -4x = y + 3 y=-4x - 3 Why is pH so important to maintain life?A small change in pH in the ocean can be very harmful to sea lifeHuman blood is kept at a constant pH otherwise we would dieThe pH of soil is very important for plant to be able to grown in itOr all the above What is the answer for this? Please help What 3 items are needed for photosynthesis to occur?Question 1 options:Carbon Dioxide, water, sunlightSunlight, nutrients, waterGlucose, water, soilOxygen, glucose, sunlight Discuss the role of the United Nations. White Diamond Flour Company manufactures flour by a series of three processes, beginning with wheat grain being introduced in the Milling Department. From the Milling Department, the materials pass through the Sifting and Packaging departments, emerging as packaged refined flour.The balance in the account Work in Process-Sifting Department was as follows on July 1:Work in Process-Sifting Department(900 units, 3/5 completed):Direct materials (900 $2.05)$1,845Conversion (900 3/5 $0.40)216$2,061The following costs were charged to Work in Process-Sifting Department during July:Direct materials transferred from Milling Department:15,700 units at $2.15 a unit$33,755Direct labor 4,420Factory overhead 2,708During July, 15,500 units of flour were completed. Work in Process-Sifting Department on July 31 was 1,100 units, 4/5 completed.Required:1.Prepare a cost of production report for the Sifting Department for July. If an amount is zero, enter "0". Round your cost per unit answers to the nearest cent.2.Journalize the entries for costs transferred from Milling to Sifting and the costs transferred from Sifting to Packaging. Refer to the chart of accounts for the exact wording of the account titles. CNOW journals do not use lines for spaces or journal explanations. Every line on a journal page is used for debit or credit entries. Do not add explanations or skip a line between journal entries. CNOW journals will automatically indent a credit entry when a credit amount is entered. Use the date July 31 for all journal entries.3.Determine the increase or decrease in the cost per equivalent unit from June to July for direct materials and conversion costs. Round your answers to the nearest cent.4.Discuss the uses of the cost of production report and the results of part (3) it is familiarly used by beginners or children in most of their activities in school So my teacher wants me to Evaluate the expression when x=20 and z=7 z times x=HELP PLEASE