Boojho saw a cracker burst at night at a distance from his house. He heard
the sound of the cracker a little later after seeing the cracker burst. Give the
reason for the delay in hearing the sound.​

Answers

Answer 1

Answer:

The primary reason of seeing the cracker burst and hearing the sound later is because the speed of sound and light. Speed of light is in the vicinity of 3*10^8m,/ sec while the speed of sound is at a distance of 332m/sec. It is similar to lightning that strikes before the sound.

hope this helped you

please mark as the brainliest (ㆁωㆁ)(ㆁωㆁ)

Answer 2
Light will travel faster than sound. Thus the delayed hearing

Related Questions


Why is it important that a satellite in orbit be above the earth's
atmosphere?

Answers

Explanation:

A stone is thrown upward neglecting air resistance. ... Why is it important that a satellite remain above Earth's atmosphere? The air resistance will slow it down and burn it. What happens to a satellite close to Earth's surface if it is given a speed exceeding 11.2 km/s?

An airplane accelerates down a runway at 3.10m/s^2 for 41.5 seconds from rest until it finally lifts off the ground . What is the displacement before take off

Answers

Answer:1720m

Explanation:

Uh

PLEASE I NEED TO KNOW
A mountain climber encounters a gap in an ice field. The opposite side of the gap is 2.75m lower, and is separated horizontally by a distance of 4.1m. To cross the crevasse, the climber gets a running start and jumps in the horizontal direction. (A) What is the minimum speed needed by the climber to safely cross the gap? (B) What is the climber's velocity right before landing?​

Answers

Answer:

A) 5.5 m/s

B) 9.2 m/s

Explanation:

A) Given in the y direction:

Δy = 2.75 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

2.75 m = (0 m/s) t + ½ (9.8 m/s²) t²

t ≈ 0.75 s

Given in the x direction:

Δx = 4.1 m

a = 0 m/s²

t = 0.75 s

Find: v₀

Δx = v₀ t + ½ at²

4.1 m = v₀ (0.75 s) + ½ (0 m/s²) (.75 s)²

v₀ ≈ 5.5 m/s

B) Find vᵧ.

v² = v₀² + 2aΔy

vᵧ² = (0 m/s)² + 2 (9.8 m/s²) (2.75 m)

vᵧ ≈ 7.34 m/s

Find v.

v² = vₓ² + vᵧ²

v² = (5.5 m/s)² + (7.34 m/s)²

v ≈ 9.2 m/s

How many millimeters are in .075cm ?

Answers

Answer: 0.75

Explanation:

take away the 0

0.75 millimeters :) you can solve this by multiplying the length value by 10. hope this helps

On what factors does the quantity of heat of an object depend?​

Answers

Explanation:

This quantity is known as the specific heat capacity (or simply, the specific heat), which is the heat capacity per unit mass of a material. Experiments show that the transferred heat depends on three factors: (1) The change in temperature, (2) the mass of the system, and (3) the substance and phase of the substance.

HELP. A river flows South with a speed of 8m/s. From the shore, you see a boat moving South with a speed of 10 m/s. From their frame of reference, how fast are the rowers moving?

Answers

Answer:

18 m/s

Explanation:

Given that,

Speed of river is 8 m/s due South

From the shore, you see a boat moving South with a speed of 10 m/s. Both boat and river are moving in same direction. The resultant velocity will add up.

v = 10 m/s + 8 m/s

v = 18 m/s

Hence, the rowers are moving with a speed of 18 m/s.

Which types of changes observe the law of conservation of mass?
A.only changes of state
B.only physical changes
C.only chemical changes
D.physical changes and chemical changes

Answers

Answer:

I think it might be umm... b

The correct answer is actually D

Explanation: i got it right on my district assignment! :)

A dog chase is a cat until the dog gets tired. A graph of its velocity overtime is shown below. What is the dogs average acceleration from 0-12 seconds?

Answers

Answer: 0.67 m/s^2

Explanation:

Bc it is trust me

Answer:

.67 m/s^2

Explanation:

khan academy

What kind of things would Physics be able to answer? I. How does a hair dryer work? II. How does a lightning bolt form? III. How far will a cannon ball fly through the air? IV. What happens to a person after they die? I and III I, II, and III I only I, II, IV

Answers

Answer:

physics answers everything to understand biology you need to understand chemistry which is connected to physics which is connected to mechanics like fluid mechanics or quantum mechanics which is connected to math and all of that is science not particularly physics but physics can answer all of the questions you asked and more.

Explanation:

Answer:

sorry im only in fifth grade

Explanation:

Evidence of a chemical change includes
A) change in size.
B) change in color.
C) change in shape.
Eliminate
D) change in weight.

Answers

Evidence of a chemical change includes

change in color

in your ans
A jogger runs the first 250 m of a race in 13.5 sec. What is the jogger's
velocity(m/s)?

Answers

Answer:

S=250 m

t=13.5 sec

V=?

Explanation:

V=S/t

V=250/13.5

V=18.51m/s

differenciate between emf and potential difference ​

Answers

Answer: 1.Emf is the total voltage in the battery while the potential difference is the work done in moving a charge against the electric field between two specific points in the circuit. 2.Emf is always greater than the potential difference.

Explanation:

To me (electrical engineer since 1973), there is no difference. They are two different names for the same thing.

To work on muscular endurance, you should use?

Answers

Answer:

Arm Workouts- with Weights.

Pushups for Upper-Body Strength.

Lunges and Squats.

Explanation:  Lifting weights is one way to build muscular strength and endurance in your arms.

Pushups primarily work the pectoral muscles of the chest, starting directly below the neckline.    

Brainlist please?       and your welcome!

Can you ever absolutely prove that a hypothesis is correct? Explain.

Answers

Yes you can, with using scientific experiment.

Ask a question -- Do background Research -- Construct a Hypothesis --Test with an Experiment -- Procedure working? -- Yes or no? -- Analyze Data and Draw Conclusions

With an experiment you can discover if its correct or not.

Hope this helps ! <3

3. The value of frictional force on block in the given
diagram is (Take g = 10 m/s2)
5N
m = 3 kg
8.
u = 0.3
(1) 4N
(2) 5 N
(3) 6 N.
(4) 9 N​

Answers

I need help with my homework it’s due tomorrow and I feel like I failed can u help me bro

Which changes would result in a decrease in the gravitational force between two objects? Check all that apply.

increasing the distance between the objects
decreasing the distance between the objects
increasing the mass of one of the objects
increasing the mass of both objects
decreasing the mass of one of the objects
decreasing the mass of both objects

Answers

Answer:

- increasing the distance between the objects

- decreasing the mass of one of the objects

- decreasing the mass of both objects

Explanation:

Got it right on Edge 2020.

The gravitational force is decreased by increasing the distance between the objects or decreasing mass of one or both of the objects

According to Newton's law of Universal Gravitation;  The force of gravity is directly proportional to the product of the masses between two bodies and inversely proportional to the square of the distance between them.

F = Gm1m2/r^2

Where;

G = gravitational constantm1 and m2 are the masses of the objects r = distance separating the objects.F = gravitational force

We can see from the formula above, that the following will result in the decrease of the force between two objects;

increasing the distance between the objects decreasing the mass of one of the objects decreasing the mass of both objects

Learn more: https://brainly.com/question/999862

A plane takes off at an angle of 30 degrees at a speed of 150 km/h. Determine the horizontal
and vertical components of this velocity vector.

Answers

Answer:

Horizontal Component = 129.9 km/h

Vertical Component = 75 km/h

Explanation:

When a vector is resolved on the x-axis and the y-axis, the components so formed are called its rectangular components. The component along y-axis is called the vertical component and the component along x-axis is called horizontal component. These components can be given by following formulae:

Horizontal Component = v Cos θ

Vertical Component = v Sin θ

where,

v = velocity = 150 km/h

θ =  angle = 30°

Therefore,

Horizontal Component = (150 km/h)(Cos 30°)

Horizontal Component = 129.9 km/h

Vertical Component = (150 km/h)(Sin 30°)

Vertical Component = 75 km/h

a charge of 12 passes through the filament of a car head lamp bulb in 4 s. what is current?​

Answers

Answer:

3 A

Explanation:

[tex]current = \frac{charge}{time} \\ = \frac{12}{4} \\ = 3 \: amperes[/tex]

Two grocery carts have the same initial total momentum. The two carts collide, and now cart B has a greater final velocity.

Which best describes the final total momentum of both the carts compared to the initial total momentum?

It is less if cart B has a smaller mass.
It is greater if cart B has a greater mass.
It is the same if no external forces are added.
It depends on the masses of cart A and cart B.

Answers

Answer: The anser is C

Explanation:

It is the same if no external forces are added.

Based on the principle of conservation of linear momentum, the final total momentum of both carts compared to the initial total momentum is the same if no external forces are added.

The given information;

two carts have equal initial momentum beforeafter collision, cart B has greater final velocity

According to the principle of conservation of linear momentum, the total momentum before collision is equal to the total momentum after collision.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

where;

m₁ and m₂ are the masses of the two cartsu₁ and u₂ are the initial velocities of the two cartsv₁ and v₂ are the final velocities of the two carts after collision

Thus, based on this principle (conservation of linear momentum), the final total momentum of both carts compared to the initial total momentum is the same if no external forces are added.

Learn more here:  https://brainly.com/question/24424291

A car was traveling at a velocity of 8 m/s and then accelerated at a rate of 5 m/sr^2, reaching a velocity of 85 m/s. How far did the car travel at this acceleration rate?

Answers

Answer:

716.1 m

Explanation:

A car was travelling at a velocity of 8m/s

It accelerated at 5m/s^2

It finally reached a velocity of 85m/s

The distance can be calculated by applying the fourth equation of motion

V^2= U^2 +2as

V= 85m/s

U= 8m/s

a= 5m/s^2

85^2= 8^2 + 2(5)(s)

7225= 64 + 10s

7225-64= 10s

7161=10s

s= 7161/10

= 716.1 m

Hence the car travelled at a distance of 716.1 m

A block has two forces on it. One force is 15 N going north and the other is 22 N going east. What is the overall force pushing on the block with magnitude and direction?

Answers

Answer:

The overall force pushing on the block is 26.63 N in the direction of N 34° E

Explanation:

Given;

force going north, F₁ = 15 N

force going east, F₂ = 22 N

The resultant of the two forces is the hypotenuse side of the right angled triangle formed by the two forces.

Let the magnitude of the resultant force = F

F² = F₁² + F₂²

F = √(F₁² + F₂²)

F = √(15² + 22²)

F = 26.63 N

The direction of the force is the angle between the resultant force and the horizontal force.

tan θ = 15 / 22

tan θ = 0.6818

θ = tan⁻¹ ( 0.6818)

θ = 34°

Therefore, the overall force pushing on the block is 26.63 N in the direction of N 34° E

b. Study the given figure and calculate the area of the leaf
Area of each square
=1 cm, help me;-)​

Answers

Answer:

19 cm sq

Explanation:

you have to count one full and half area occupied by leaf in each box, then you have to multiply with 1 cm sq.

Which of the following examples describe an acceleration? (Check ALL that APPLY)

Group of answer choices

A car has to slow down as it approaches a slower truck in front of it

A car is sitting in a parking lot

A car maintains a speed of 15 mph as it turns around a corner

A car is stopped at a stop light, and speeds up when it turns green

A car drives straight down a road at 60 mph

Answers

Answer:#3,#4,#5

Explanation:they each don't stop

For work to be accomplished we must have?


A. an action which causes movement and an opposite reaction

B. an action which causes no movement or reaction

C. a force and a movement in the opposite direction of the force

D. a force and a movement in the same direction as the force

Answers

Answer:

a force and a movement in the same direction as the force.

Explanation:


The nucleus of most atoms is composed of which of the following sub-atomic particles?

Answers

Answer:

protons (+ charge) & neutrons (neutral charge)

however protons has a positive charge so it determined what atom it is.

Answer:

tightly packed protons and neutrons

Explanation:

Represent the following sentence as an algebraic expression, where "a number" is the
letter x. You do not need to simplify.
The product of 5 and the difference of 9 and a number.

Answers

Answer:

não sei.................

One fifth of the difference between a number and one is given to us in this line. This must be written as an algebraic expression. Now that this number is expressed as a letter x difference.

What algebraic expression number is the letter x?

Thus, a number that is 5 more than x is equal to x+5. As a result, “5 more than a number” is represented by the algebraic expression “x+5”. The right response is therefore “x+5”.

We don't know what the value of the variable x is, but it can have any value. Since it is a constant number that is utilized with the variable term and is clearly defined, 5 is referred to as the coefficient of x.

Therefore, It can be calculated as 1, divided by 5, multiplied by the entity that is present. For the response to the query is 1 multiplied by x, minus 1, multiplied by 5 divided by 1.

Learn more about algebraic expression here:

https://brainly.com/question/953809

#SPJ2

If i wanted to determined what part of your brain that you needed not just used in order to respond to the sound of your voice which brain analysis technique should i use

Answers

Answer:

The brain analysis technique which allows for identifying which part of the brain is functional per human activity is Neuroimaging.

Explanation:

Brain Imaging (or Neuroimaging) involves the use of direct observation in a living organism of the structure, function and anatomy of its central nervous system.

Cheers!

You accidentally throw your car keys horizontally at 8.0 m/s from a cliff. If yours keys land 28 m from the base of the cliff, how high was the cliff? Question 10 options: 17.15 m 60 m 45 m 28 m

Answers

Answer:

[tex]45m[/tex]

Explanation:

Let [tex]V_0[/tex] be the horizontal speed of the keys and D be the horizontal distance covered by the keys.

[tex]V_0= 8.0 \frac ms[/tex]

[tex]D= 28 m[/tex]

The initial velocity in the vertical direction is [tex]0[/tex].

Let [tex]g[/tex] be the acceleration due to gravity, which always acts vertically downwards, so, it will not change the horizontal direction of the speed, i.e. [tex]V_0[/tex] will remain constant throughout the projectile motion.

Let [tex]t[/tex] be the total time of flight in seconds. So,

[tex]D= V_0t[/tex]

[tex]\Rightarrow 28=8t[/tex]

[tex]\Rightarrow t=3 s \; \cdots (i)[/tex]

Let [tex]H[/tex] be the hight of the cliff.

Now, from the equation of motion

[tex]s=ut+\frac 1 2 at^2\;\cdots(ii)[/tex]

Where is the displacement is the direction of force, is the initial velocity in the direction of force,   is the constant acceleration due to force and is the time of flight.

Here, , and  (negative sign is for taking the sigh convention positive in the direction as shown in the figure.)

From equation (ii)

[tex]-H=0\times t + \frac 1 2 (-g)t^2[/tex]

[tex]\Rightarrow H= \frac 1 2 gt^2[/tex]

Take [tex]g= 10 \frac m{s^2}[/tex] and put the value of [tex]t[/tex] from equation (i), we have

[tex]H=\frac 1 2 \times 10\times 3^2[/tex]

[tex]\Rightarrow H= 45 m[/tex].

Hence, the height of the cliff was [tex]45 m[/tex].

What information does a distance time graph provide

Answers

A distance/time graph will provide you with how much distance will be covered in a certain amount of time.


Hope this helps

human activities can have positive and negative effects on the environment. Humans can benefit natural areas by
A. throwing waste products in these areas.
B. removing all the vegetation from theses areas.
C. polluting the areas by burning fossil fuels.
D. preserving the natural resources that they provide.​

Answers

the answer would be D , the rest are ways humans basically destroy nature
Other Questions
ANSWER THIS QUESTION WITH WORKING PLEASE :>!!! how do u say plz in german Function h is a transformation of the parent exponential function, $(=) = 2*h(t) = -3 2-Which statement is true?O AFunction h is a horizontal translation of function f.OB.Function h is a reflection and a translation of function f.C.Function h is a vertical translation of function f.D.Function his a reflection and a dilation of function f. A portrait without its frame has a height 1.5 times its width w, in inches. The width of the frame is 4 inches on all sides. What is the area of the frame Jody's English quiz scores are 56, 93, 72, 89, and 87. What is the median ofher scores?a. 72b. 87C. 56d. 85.6 Which of the following is a homogenous mixture? a. water b. chicken c. raisin bread d. salad CAN YOU GUYS ALSO LOOK AT MY OTHER QUESTIONS I NEED HELPP\small \overrightarrow{QS} bisects \small \angle PQR. If \small m\angle PQS=5x-11 and \small m\angle RQS=3x+7, than what is \small m\angle PQR? \small m\angle PQR= 8x-4 degrees x +2y = 55x -y = 3 I need help with my homework please anyone please helppp The correct equation is S=2r+7 verify this equation matches your table for r=1 r=2 and r=3 hi i need a definition of adaptation, camouflage, habitat, hibernation, migration, mimicry, niche, predator, prey, reproduction, and species. !!! I will give you that crown thing if you get this correct thank you !!! Which subject pronoun replaces "Sophie, Lise, Cristelle, Isabelle et Rober"'? 1. They decorated the gym before dance 5. Which one of the following best defines a network server?O A A type of network system that provides resources to network clientsB A type of system where all devices on the network are clientsC A type of network with one server and multiple clientsO D A type of device that connects all all other network devices together What was the federalist response to the anti-federalist? Regina is walking to school after 10 minutes, jen has walked 3/10 mile.Find her speed in miles per hour A 2.5 miles B 1.3 miles C 1.8 miles per hour D 3miles per hour * What Enlightenment ideas are reflected in the Declaration of Independence? * Reasons why separation from Britain was necessary? * What does the Declaration of Independence say about the values of the American people? How did the controversy over the election of 1876 affect Reconstruction?(A) It drove the Supreme Court to restrict the scope of the Fourteenth Amendment and ended Reconstruction,(B) It drove a compromise that ended Reconstruction.(C) It drove the Supreme Court to uphold the Slaughterhouse Cases, which revivalry Reconstruction.(D) It ended the domination of southern Democrats, which revived Reconstruction. 2x-3 = -x+3 what does x equal WHAT IS -(-2z+5y) HELP MY HOMEWORK IS DUE IN 50 MINUTES PLEASE Explain why geographers often break the world into cultural regions. What can they learn by doing this , and how can they use this information