Your friend is flying a remote control jet in your yard, as seen in the diagram above. As it flies past you, you notice that the sound changes. You ask your friend to fly the jet faster and fly it past you again. Which of the following changes would you expect as it flies towards you at a higher speed and why?

Answers

Answer 1

Answer:c

Explanation:


Related Questions

if the speed is 343 m/s and the wavelength is 10m than what is the frequency?

Answers

Frequency = speed / wavelength
frequency = 343/10 = 34.3 Hz

Why learning SI base unit are important to understanding the sizes of a different object?

Answers

A base unit (also referred to as a fundamental unit) is a unit adopted for measurement of a base quantity. A base quantity is one of a conventionally chosen subset of physical quantities, where no quantity in the subset can be expressed in terms of the others. The International System of Units (SI), commonly known as the metric system, is the international standard for measurement. ... The SI is made up of 7 base units that define the 22 derived units with special names and symbols. The units and their physical quantities are the second for time, the metre for measurement of length, the kilogram for mass, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity. The various features and future prospects of the International System of Units (SI) are described. The SI is based on seven selected base units, corresponding to the seven quantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity. Units are of two types: Fundamental units. Derived units. or powering the base units in various combinations, For example:
mechanical work is force applied multiplied by distance moved and has the unit newton metre written as Nm.
speed is distance divided by time and has the unit metre per second written as ms. The three measures are descriptive, diagnostic, and predictive. Descriptive is the most basic form of measurement.

How can you use a Position vs. Time graph to describe an object’s speed or direction of motion

Answers

Answer:

In a position-time graph, the velocity of the moving object is represented by the slope, or steepness, of the graph line. If the graph line is horizontal, like the line after time = 5 seconds in Graph 2 in the Figure below, then the slope is zero and so is the velocity. The position of the object is not changing.

Explanation:

hop it helps

What is the chemical symbol for C6H12O6

Answers

The Answer is D-Glucose.
D-Glucose is the answer

ASAP
In an experiment, students were given an unknown mineral. The unknown mineral was placed in 150 ml of water. Once in the water, the volume went up to 165 ml. Then when the same object was dried, then massed on a balance. It had a mass of 225 grams. What is the density of the unknown mineral? Note: You only have to fill in the numerical answer.

Answers

Answer:

15

Explanation:

225/(165-150)=15g/cm3

As a United States citizen, the requirement to serve on juries if called upon is considered which of the following?

Answers

Answer:

if u are caught by the jews u die

Explanation:

Answer: An obligation

Explanation: Because I got it right on Prepworks!

How do you calculate relative velocity?

Answers

Answer:

Vab=Va-VbVab=Vb-VaExplanation:

Vab is velocity of a relative to b

Vba is velocity of b relative to a

Heart rate refers to the number of times your heart beats in one minute
True
False

Answers

Answer:

true

Explanation:

Answer:

true

Explanation:

how does speed affect the amount of kinetic energy an object has?

Answers

Answer:

The faster an object moves, the more kinetic energy it has. The more mass an object has, the more kinetic energy it has

Hope this helps! Please mark Brainliest!

Explain how a car moving around a traffic island at a steady speed of 20 mph is constantly accelerating.

Answers

constantly moving, i don’t get what you are asking but it’s constantly moving so i’m guessing accelerating?

A scientific theory is a hypothesis supported by many experiments

True or False

Answers

Answer:

I believe it is True... I hope it is correct :)

Explanation:

Answer : False

Explanation :

What is the magnitude of the total displacement of the school bus from the start to the end of its trip?

Answers

Answer:

With the given information, we can assume that the start and the end of the trip are the same place. (Suppose, a tour where the bus starts at the school, then it goes to a given location, and then it returns to the school)

Now, the definition of displacement is:

The difference between the final position and the initial position.

But if the start and the end of the trip are the same place, then the initial and final position must be the same. Then the difference between the final position and the initial position is zero.

This means that the displacement of the school bus from the start to the end of its trip must be zero.

What is happening to the heat in freezing?

Answers

Answer:

Heat is released.

Explanation:

Freezing is almost always an exothermic process, meaning that as liquid changes into solid, heat and pressure are released. This is often seen as counter-intuitive, since the temperature of the material does not rise during freezing, except if the liquid were supercooled.

A ball moving horizontally across my desk rolls off at a velocity of 3.3 m/s. Assuming my desk is a height of 0.81 m, how long will the ball be in the air?

Answer in units of seconds. Assume acceleration due to gravity is -9.81 m/s^2

Answers

Answer:

girl what- I can't answer this but I need points so I'ma just put this random lol sorry tho . ask the tutor

what is the volume of a bar of soap that is 9 cm long, 5 cm wide, and 2 cm high?

Answers

Answer:

90cm

Explanation:

2x5=10

10x9=90

Answer:

90 cm

Explanation:

To find volume, the formula is V=LWH

L is the length, W is the width and H is the height:

9 x 5 x 2 = 90

So V = 90 cm

Hope this helps you out! : )

One difference in the formation of the small solid planets and the larger gaseous planets is that the gaseous planets formed
A) much closer to the Sun.
B) beyond the frost line in the nebula.
C) from condensed metals in the outer nebula.
D) as a result of icy individual nebula in space.

Answers

B) beyond the frost line in the nebula.

During what major athletic competition did the Munich Massacre occur?

Answers

Answer:

The answer is A

Explanation:

Answer:

A. Summer Olympics

Explanation:

Anyone get this if you do please help me step by step

Answers

Answer:

$7.95

Explanation:

$5.75 cost per bag ÷ 47 apples = unit cost of $0.1223. thus, each apple cost $ .1223.

.1223 × 65 apples= $7.95

note_rounding apples to .12*65=$7.8

what is the difference between distance and displacement? give an example of each.

Answers

Answer: Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

Explanation: hope it helps :)

A wave traveling at 50.0 m/s has a wavelength of 10.0 m. What is the frequency of the wave? Show your work below?

Answers

Answer:

The frequency of the wave is 5 Hz

Explanation:

Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).

Frequency is the number of vibrations that occur in a unit of time. Its unit is s – 1 or hertz (Hz).

The propagation velocity is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave disturbance propagates along its displacement. Relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation: v = f * λ.

In this case:

v= 50 [tex]\frac{m}{s}[/tex]f=?λ= 10 m

Replacing:

50 [tex]\frac{m}{s}[/tex] = f* 10 m

Solving:

[tex]f=\frac{50 \frac{m}{s} }{10 m}[/tex]

f=5 Hz

The frequency of the wave is 5 Hz

How many significant figures are in 0.0069

Answers

Answer:

2

Explanation:

Three students are fighting over a T-shirt. Student 1 exerts a constant force F⃗ 1=F0i^ on the shirt, student 2 exerts a constant force F⃗ 2=−3F0j^ and student 3 exerts a constant force F⃗ 3=−4F0i^+Gj^. (In these expressions F0 and G are positive constants with units of force.) As the three students exert these forces, the T-shirt undergoes a straight-line displacemen 2di^+dj^ where d is a positive constant with units of distance. Find the work done on the T-shirt by student 1.

Answers

Answer:

W₁ = 2F₀d

Explanation:

When a force is applied on a body, due to which the body displaced by some distance, then the work is said to be done. Hence, the work is the dot product of the force nd displacement.

W = F.d

where,

W = Work Done

F = Force Applied

d = Displacement

For student 1:

W = W₁ = ?

F = F₁ = F₀ i

d = 2d i + d j

Therefore,

W₁ = (F₀i).(2di + dj)

W₁ = 2F₀d(i.i) + F₀d(i.j)

W₁ = 2F₀d(1) + F₀d(0)

W₁ = 2F₀d + 0

W₁ = 2F₀d

define polarization (igcse answer please)

Answers

Answer:

the action of polarizing or state of being or becoming polarized: such as the action or process of affecting radiation and especially light so that the vibrations of the wave assume a definite form. Polarization, in Physics, is defined as a phenomenon caused due to the wave nature of electromagnetic radiation. There are two types of waves, transverse waves, and longitudinal waves.

plz mark brainliest

Jenny has 456 grains of rice. how many grains of rice are left after 234 grains are eaten?

Answers

Answer:

222 grains are left....lol such simple question

Can somebody google or use the info on the page to answer question 2 correctly!!! Plz thanks!
(WILL MARK AS BRAINLIEST)
:D

Answers

Answer:

Yes, Most living thing need oxegen, plants need light to grow(food).

plants and animals need water. temputre is important too, most living things need a  tempure range. therefor, all(most) living things need these 5 thing to live.

just rewrite this in your own word

Hope this helped you

Red.

I WILL MARK BRAINLIEST PLS HELP!!!!!
Which of these is an accurate statement about the strength of the force of gravity?
(1 Point)
It is strong distance force.
It is the strongest known force in the universe.
It does not exist in outer space.
It is relatively weak distance force.

Answers

i was wrong sorry

Explanation:

Answer:

it is relatively weak distance Force

ordered from strongest to weakest the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity

which sentence describe newton's third law?
A. the acceleration of an object is equal to the net of force divided by the mass of an object
B. for an object to slow down or speed up the forces acting on it must be unbalanced
C. forces always comes in pairs that act in opposite directions
D. an object that is moving at a constant speed and in a straight line is experiencing balanced forces

Answers

Answer:

C. Forces always comes in pairs that act in opposite directions

Explanation:

I got it right when I chose it.

Answer:

c

Explanation:

it's correct trust me

Use Hooke's Law and Newton's 2nd Law to derive a formula for the acceleration of an object of mass m on a frictionless surface which is attached to a spring with a constant k which is stretched a distance L. The acceleration should be in terms of m, k, and L.

Answers

Answer:

a = kL/m

Explanation:

Here we can use Hooke's Law to find out the force applied on the system. Hooke's Law states that when a spring is stretched by some force, the force applied is directly proportional to the displacement of spring. The formula is given as:

F = kL

Now, the Newton's Second Law of motion states that whenever an unbalanced force is applied to a body it produces an acceleration in the body, in its own direction. So, the force is given by the formula:

F = ma

Comparing both the forces, we get:

kL = ma

a = kL/m

Pls Answer I’m Being Timed!!



Substance Specific Heat (1 kg ? K')
Aluminum
900
Copper
390
Brass
380
Silver
230
Platinum
130
of the five metal samples, with equal masses, which would be the best material to use if you needed something to heat up quickly?

A aluminum
B. platinum
C. copper
D. gold

Answers

Answer:

Platinum

Explanation:

The specific heat of a substance gives the amount of energy it takes to raise the temperature.

The answer is a because because I just took took this so I’ve seen the answer

Hydrogen bonds are weaker than the bond that holds hydrogen to oxygen in a
water molecule.
A. True
B. False

Answers

Answer:

Your answer is false

Explanation:

Other Questions
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These cutoffs are based on the N(72, 10) distribution.A) Give the cutoffs for the grades in this course in terms of standardized scores.B) Give the cutoffs in terms of actual total scores. C) Do you think that this method of assigning grades is a good one? state the uses of coke ? Small, energy-efficient, Internet-centric, new computers are increasingly gaining popularity (The New York Times, July 20, 2008). Some of the biggest companies are wary of the new breed of computers because their low price could threaten PC makers already thin profit margins. An analyst comments that the larger companies have a cause for concern since the mean price of these small computers has fallen below $350. She examines six popular brands of these small computers and records their retail prices as given below:$322 $269 $373 $412 $299 $389Required:a. What assumption regarding the distribution of the price of small computers is necessary to test the analysts claim?b. Select the appropriate null and the alternative hypotheses to test the analysts claim.1. H0: = 350; HA: 3502. H0: 350; HA: > 3503. H0: 350; HA: < 350c. Calculate the value of the test statistic. d. At the 5% significance level, what is the critical value(s)? Is there anyone who can do my homework for me Its 30 questions I'm really busy with life this is why I ask if you can please friend me I also need the work Which of the following factors does not directly affect family size and composition? CHANGE THE GIVEN SENTENCES INTO INDIRECT SPEECH :- (i) He said to me,"Are you going to Patna ?" Logan and Nathan are shelving books at a public library. Logan shelves 5 books at a time, whereas Nathan shelves 6 books at a time. If they end up shelving the same number of books, what is the smallest number of books each could have shelved? What country designed their calendar around the flooding of the Nile River? in a company you are in charge of system maintainance. Justify with 5 reasons why your role is key The human body is composed of approximately 60% of water.T F A liquid at rest in a fixed container exerts a force perpendicular to the wall of the container. Two students make claims about the microscopic cause of this force. Student A says that the force exerted by individual molecules as they bounce off the wall is always perpendicular to the wall. Student B says that the molecules may strike the wall at angles that are not perpendicular. Which student is correct and why?A. Student A . If the molecules hit at nonperpendicular angles, there would be a component of force parallel to the wall exerted on them. The net result would be macroscopic motion of the fluid.B. Student A . The molecules in a liquid are in random motion at the microscopic scale, so they move in every direction. Near the wall the molecules collide with each other in such a way that the components of their motion not parallel to the wall cancel.C. Student B . The molecules in a liquid are in random motion at the microscopic scale. For every atom that hits at an angle to one side of perpendicular, there is likely to be another atom hitting at the same speed at the same angle on the other side of perpendicular. On average the nonperpendicular components cancel.D. Student B . The walls of the container cannot move, so near the walls the parallel component of the motion of the molecules is cancelled by the net force the wall exerts on the liquid. What is the value of a(b - c) when b = 3, c = -3 and a = -2? find the perimeter & area of the rectangle 100 POINTS + BRAINLIEST IF ANSWERED CORRECTLYThink about the character of Mercedes and how different she is from Buck. How might The Call of the Wild be different if the story were told from her point of view?Write two paragraphs as if Mercedes were the main character in The Call of the Wild. Pick a scene from Chapter 5, and write the narration from her point of view. Base your narration on what we know of Mercedes based on the text. Your response should be at least 150 words in length. Every day, Ann goes to the gym for 30 minutes and Max goes for 3 times longer. For how long does Max go to the gym every day? what did the cowboy say when he fell of his horse Five computer program modules are ranked as M1, M2, M3, M4, and M5 according to the ascending order of effort required to debug them, among which M1 requires the least amount of effort and M5 requires the most amount of effort. A software engineer must randomly select three program modules from the five modules. He (or she) does not know the amount of effort each module costs when selecting.A) What is the sample space? B) Let A be the event that one selected module requires the least amount of effort. List the outcomes in A, and calculate the probability of A. C) Let B be the event that the one selected module requires the most effort. List the outcomes in B, and calculate the probability of B. D) List the outcomes in the compound event AnB, and calculate the probability of it. E) List the outcomes in the compound event AUB, and calculate the probability of it. F) List the outcomes in the compound event AnB, and calculate the probability of it. G) List the outcomes in the compound event AUB, and calculate the probability of it. H) Are events A and B mutually exclusive? Explain why? What makes scientific investigations similar to other types of investigations?I need help!!!!