A pole 10 m long lies on the ground next to a barn that is 8 m long. AN athlete picks up the pole, carries it far away and then runs with it towards the barn at speed 0.8c. The athlete's friend remains at rest, standing by the open door of the barn.

Answers

Answer 1

Answer:

okay

Explanation:

but what is the question here?


Related Questions

According to Newton's second law, acceleration of an object depends on the mass of the object and:
a. The net weight of the object
b. The inertia of the object
c. the net force acting on the object

Answers

Answer:

C. The net force acting on the object

Explanation:

The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.

KIIS FM broadcasts at 102.7 MHz, what is the wavelength of that radio wave?

Answers

Answer:

2.92 m

Explanation:

As we know, frequency × Wavelength = Speed of light

so here frequency of 102.7 MHz can be written as 102.7× 10⁶ Hz..

So Lambda (wavelength) = 3×10⁸/ 102.7 × 10⁶ which gives 2.92 metres or 2.92 × 10¹⁰ Å

A boy kicks a football with a force of 420.0 N for a time of 22.3 s. What is the impulse and change in momentum?

Answers

Answer:

the impulse and change in momentum of the football is 18.83 N/s.

Explanation:

Given;

applied force, F = 420 N

time of force action, t = 22.3 s

The impulse and change in momentum of the football is calculated as;

J = ΔP = [tex]\frac{F}{t}[/tex]

where;

J is the impulse

ΔP is the change in momentum

J = ΔP = [tex]\frac{F}{t}= \frac{420}{22.3} = 18.83 \ N/s[/tex]

Therefore, the impulse and change in momentum of the football is 18.83 N/s.

How many seconds would it take to drive to Miami if I go 75 mph the whole way? (use 675 miles for the distance)

Answers

Answer:

32,400 seconds

Explanation:

675 (distance) / 75 mph = 9 hours of driving.

9 hours x 60 minutes = 540 minutes.

540 minutes x 60 seconds = 32,400 seconds

Energy does / does not change the phase of matter.

Answers

Answer:

does

Explanation:

What type of wave is this ?

Answers

It’s a sound wave but it can also be a mechanical wave!
Hope this helps!
:)

can someone help me please

Answers

Answer:

time

Explanation:

Answer:

hour measure time so their for it is time

What is the smallest part of an element?
A. A neutron
B. An atom
C. An electron
D. A proton
HELPPPO

Answers

An atom. :) Good luck! The atom is the smallest particle in an element.

Eating soda is used while cooking rice in the hotels ? why?​

Answers

Answer:

because it helps to neutralize acid in our body.

What is the reaction time

Answers

Answer:

"Mental chronometry"

Explanation:

Reaction time is a measure of how quickly an organism can respond to a particular stimulus. ... Many factors have been shown to affect reaction times, including age, gender, physical fitness, fatigue, distraction, alcohol, personality type, and whether the stimulus is auditory or visual."Hope this is fine for you"
the time from the stimulus occuring to the performer starting to mive in response to it

John slides down a hill at a 4 m height initially at rest. If all energy is conserved and friction is excluded, what is John's velocity at the bottom of the ramp?

Answers

The velocity at the bottom : v = 8.85 m/s

Further explanation

Given

height of the hill = 4 m

Required

The velocity at the bottom

Solution

The law of conservation energy :

ME₁=ME₂

(PE+KE)₁ = (PE+KE)₂

initially at rest⇒vo=0⇒KE₁=0

At the bottom⇒h=0⇒PE₂=0

So the equation becomes :

PE₁=KE₂

mgh=1/2.mv²

gh = 1/2v²

[tex]\tt v=\sqrt{2gh}[/tex]

v = √2x9.8x4

v = 8.85 m/s

decribe an experiment to show that pressure increase with decrease in the area of surface​

Answers

Answer:

for example the studs are made in football player boot because to increase pressure with descrease in area of surface

select one popular music either OPM or from other countries that you like most. a.why you like this music/song? b.What is the message/s of this song that affect you most? c.if you will be the writer of this song, will you change the title or not? why?​

Answers

Answer:

my favourite song is hym to the sea. That song reminds me of the innocent people who lost their lives in titanic a century ago. If I was the writer of that song ,i would not change the title of that song because I can feel the sound of ocean when I listen to that song.

A refrigerator having a power rating of 350W operates for 12 hours a day. calculate the cost of electrical energy to operate it for 30 days. the rate of electrical energy is rs4.50 per kWh. calculate the minimum fuse rating to be put in the refrigerator circuit if the supply voltage is 240V.​

Answers

Answer:

See the answers below.

Explanation:

The cost of energy can be calculated by multiplying each given value, a dimensional analysis must be taken into account in order to calculate the total value of the cost in Rs.

[tex]Cost=0.350[kW]*12[\frac{hr}{1day}]*30[days]*4.5[\frac{Rs}{kW*hr} ]=567[Rs][/tex]

The fuse can be calculated by knowing the amperage.

[tex]P=V*I[/tex]

where:

P = power = 350 [W]

V = voltage = 240 [V]

I = amperage [amp]

Now clearing I from the equation above:

[tex]I=P/V\\I=350/240\\I=1.458[amp][/tex]

The fuse should be larger than the current of the circuit, i.e. about 2 [amp]

Please answer. True or false and how do you know?

Answers

Answer:False

Explanation:

Answer: False

We know this as the acceleration of the ball would be dependent on the force used to throw it up.

Hope this helped!


A man fled 360 J of work as he pushes a crate 12.31 meters. How much force does he use? Round your answer to 2 decimal places.

Answers

Answer:

force*distance=work

Explanation:

force=work/distance

PLS ANSWER FAST WILL GIVE BRAINLEST!!!!

F= m x a



A tractor carrying hay bales has a total mass of 9 100 kg. What force is required to reach an acceleration of 4 m/ s2

Answers

Answer:

36400N

Explanation:

f =9100×4

f=36400N

PLS ANSWER FAST THIS IS TIMED TEST AND WILL GIVE BRAINLY!!!


Answer using mass m= F divided by a

Also use kilograms [kg]


A cannonball accelerates at 1000 m/s2 from an applied force of 5000 N . What is the mass of the cannonball?

Answers

Answer:

mass is 5 kg

Explanation:

F=m/a

M=f/a

F=5000

a=1000

5000/1000=5

PLEASE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP I WILL GIVE BRAINLIST

The specific heat capacity of the liquid:




The latent heat of fusion




The specific heat capacity of the solid




The specific heat capacity of the vapor




The latent heat of vaporization

Answers

Answer:

For liquid at room temperature and pressure, the value of specific heat capacity (Cp) is approximately 4.2 J/g°C.

Explanation: This implies that it takes 4.2 joules of energy to raise 1 gram of water by 1 degree Celsius. This value for Cp is actually quite large. This (1 cal/g.

PLS ANSWER FAST WILL GIVE BRAINLEST!!!



If a 25kg car accelerates at a speed 100m/ s2 s2, what will the force of the car be?
Plug in the numbers: Force=mass x acceleration

Answers

Answer:

2500 Newtons

Explanation:

If force equals the mass × acceleration then all should be quite simple

25kg is the mass of your car

100 m/s/s is the acceleration of you car

25kg • 100m/s/s = 2500 Newtons

Answer:

[tex]\boxed {\boxed {\sf 2500 \ Newtons }}[/tex]

Explanation:

The formula for force is the product of mass and acceleration.

[tex]F=m*a[/tex]

The mass of the car is 25 kilograms and the acceleration is 100 meters per square second. So,

[tex]m= 25 \ kg \\a= 100 \ m/s^2[/tex]

Substitute the values into the formula.

[tex]F= 25 \ kg * 100 \ m/s^2[/tex]

Multiply.

[tex]F= 2500 \ kg*m/s^2[/tex]

1 kilogram meter per square second is equal to 1 NewtonOur answer of 2500 kg*m/s² is equal to 2500 Newtons

[tex]F= 2500 \ N[/tex]

The force of the car is 2500 Newtons.

What are the five possible difficulties associated with ADD/ADHD?

Answers

Answer:

my cousin got that and i would say that some challenges with adhd/add is behavioral issues, meaning they dont pay attention and some people with adhd can get depressed or have anxiety also   Low self-esteem.

Poor grades.

also adhd is a disability

In the formula W=Fxd; W stands for

In the formula W=J/s; W stands for

*science*

Answers

Answer: Work and Power

Explanation:

The formula "Fxd = W" is the formula for work. It is the cross product of how much force given some distance.

The next part, Im not sure why they used a W. It is very confusing the way they wrote it. That 'W' would be the power. Power has units of joules per second.

URGENT PLZ HELPPP!

FM radio bands range from 88 MHZ through 108 MHz. The speed of light is 3 × 108 m/s.
What is the wavelength for the FM radio band at 96 MHz?
Answer in units of m.


(part 2 of 2)
What is the wavelength for the FM radio band
at 106 MHz? Answer in units of m

Answers

λ = 3.125 m

λ = 2.83 m

Further explanation

Given

Frequency of radio : 96 MHz and 106 MHz

Required

The wavelength

Solution

Wavelength : from the crest to the crest of the next wave or the trough to the trough

Frequency (f): number of waves in one second

v = λ x f

λ = v : f

Input the value :

f = 96 MHz = 96 x 10⁶ Hz

λ = v : f

λ = 3 x 10⁸ :  96 x 10⁶

λ = 3.125 m

f = 106 MHz = 106 x 10⁶ Hz

λ = v : f

λ = 3 x 10⁸ :  106 x 10⁶

λ = 2.83 m

How can the President check Congress' power to make law?
Group of answer choices. MUST PROVIDE EVEDENCE OR I WILL REPORT AND POINTS WOULD BE TAKEN AWAY

A. Congress can override the veto to get the law on health care passed.


B. The President can call a special session to extend Congress to get his law passed.


C. The President can approve or veto laws created by Congress.

D. The Congress can vote to 'ignore' the President's wishes.

Answers

Answer:

The President may veto bills Congress passes, but Congress may also override a veto by a two-thirds vote in both the Senate and the House of Representatives. Article I of the Constitution enumerates the powers of Congress and the specific areas in which it may legislate.

so its eaither      A or C hope that helped sorry if a m wrong

Explanation:

What equation/formula would you use to find the distance an object traveled?

a.distance = s x t
b.distance = s/t
c.distance = t/s

Answers

Answer:

a. distance = s x t

Explanation:

The equation we know for speed is speed = distance/time, shortened to s = d/t

If you want to find the distance, you'd rearrange the formula to make d the subject. To isolate d, multiply by t on both sides (since it's being divided on the right. This leads to

s x t = d, with d isolated on the right side.

Therefore, to find the distance an object travelled you'd use a. distance = s x t

Answer is “a. distance = s x t”

Have a good day!

When a 5 kg rock is dropped from a height of 6 m on Planet X, it loses 24 J of GPE. What is the acceleration due to gravity on Planet X?

Answers

Answer:

g = 1.25m/s²

Explanation:

Given the following data;

Mass = 5kg

Height = 6m

Gravitational potential energy = 24J

To find the acceleration due to gravity;

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.

GPE = mgh

Substituting into the equation, we have;

24 = 5*6*g

24 = 30g

g = 30/24

g = 1.25m/s²

Therefore, the acceleration due to gravity on Planet X is 1.25m/s².

Answer:

g=0.8m/s^2

Explanation:

M=5kg

h=6m

GPE=24J

GPE=Mgh

g=GPE/Mh

g=24J/(5kg)(6m)=0.8

g=0.8m/s^2

describe three small changes that you can make to your current eating habits to support a healthier lifestyle.

Answers

Answer:   Eat only when you're truly hungry instead of when you are tired, anxious, or feeling an emotion besides hunger.

Plan meals ahead of time to ensure that you eat a healthy well-balanced meal.

Keep more fruits, low-fat dairy products (low-fat milk and low-fat yogurt), vegetables, and whole-grain foods at home and at work.

Explanation:

Answer:

I know that some foods have a lot of sugar. I read online that I don’t need any more than 25 grams of added sugar a day. One kind of pop that I like to drink has 40 grams of sugar per can. I can start by drinking less pop. Next, I learned that some food makers are now putting nutrition keys on the front of their boxes. I love all kinds of breakfast cereal, so I can use the nutrition key to compare brands. Cereal high in fiber is good, but cereal high in sugar isn’t. I’ll be more careful, too, when ordering fast food. Sometimes fast-food places want to change the size of my order from medium to large for a higher price. From now on, I won’t pick the bigger meal. Picking the medium-sized meal should be better for me and can even save me money.

Explanation: Plato

simple machines are in a mousetrap

Answers

Answer:

A mousetrap makes use of a simple machine called a lever.

Explanation:

In a second-class lever the effort force is at the other end, with the load in the middle. In a third-class lever, the load is at the end and the effort force is between the fulcrum and the load. When you set the mousetrap, you are using a second-class lever. Sorry if I get this wrong. I am in 5th grade! ♥

what do you call ends of a magnet​

Answers

Answer:

The end that faces the north is called the north-seeking pole, or north pole, of the magnet. The other end is called the south pole. When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another.

Explanation:

I hope this helps and pls mark me brainliest :)

Which type of wave interaction is shown in the diagram?
wave A
MAAAAA
wave B
MAAAA
wave A + B
PAMA
A. Destructive interference
B. Diffraction subtraction
C. Diffraction gradient
D. Constructive interference

Answers

Answer: Constructive interference

Explanation: Just took the test

Other Questions
qu'est- ce que tu (1) faire ce week-end? ma sur et moi (2) faire les magasins samedi matin. elle (3) trouver un nouveau sac dos, et moi, je (4) acheter un nouveau MP3. est-ce que tu (5) venir avec nous? et mes freres, ils (6) voir le nouveau film de Depardieu au Palais cet apres midi. je vais avec eux. tu viens Which organelle is most directly involved in energy transformations within cells?A. chloroplastB. nucleusC. ribosomeD. endoplasmic reticulum Who were Andrew Carnegie, J.P. Morgan, and John D. Rockefeller and what industries didthey control A water tank contains 320 litres of water, correct to the nearest 10 litres. 50 litres of water, correct to the nearest litre, are removed from the tank. Calculate the upper bound of the amount of water left in the tank. Thomlin Company forecasts that total overhead for the current year will be $10,282,000 with 194,000 total machine hours. Year to date, the actual overhead is $5,689,800, and the actual machine hours are 98,100 hours. If Thomlin Company uses a predetermined overhead rate based on machine hours for applying overhead, as of this point in time (year to date), the overhead is SIBLE POINTSThe perimeter of the larger rectangle is 2 meters greater than twice the perimeter of the smaller rectangle. What is the perimeter of the largerrectangle?3x - 1x + 14x - 5 3. Fill the blanks to make the equivalent ratios. :9 = 10: 45 a. b. : 3 = 3:9 Are there two species of humans in this world Really need help !!! Will mark brainly !!!! describe the radical design of john steuart curry painting baptism in kansas give at least two examples of personal experienced when you witnessed bias/prejudice and what you did? write your answer on given space below.1.______________________2.______________________ Basketball player Darrell Griffith is on record asattaining a standing vertical jump of 1.2 m (4 ft).(This means that he moved upward by 1.2 m afterhis feet left the floor.) Griffith weighed 890 N (200lb). g=9.8 m/s21- What is his speed as he leaves the floor? 2- if the time of the part of the jump before his feet left the floor was 0.300s, what was the magnitude of his average acceleration while he was pushing against the floor? helppp i need help on question 1) b and d2) d and e solve by factorizing x + 8x + 15 + 0 (sat prep) find the value of x If you lived in India right now and you were looking for a job, what would your job choices be? HELP ASAP !!!Professional certification is always optional.FalseTrue 6) The height of any child in Mr. Diaz's kindergarten class is no greater than 46 inches.Unknoe) Let h be the height in inches of a child in the class. Write an inequality that means thata height is no greater than 46 inches.h < 46Unkno) Graph the inequality h < 46.egunkno58605456505248464440420 0Crinmage the value of having balanced understanding about ones right and duite as we as acting accordingly One of the most effective ways to write descriptively is to incorporate ______. PLEASE HELP! :)Choose a topic that interests you. Put your topic in the form of a question that could spark a conversation or debate. Here are some topic suggestions, but feel free to choose a topic of your own:Should the school day start later?Do new technologies cause more harm than good?How do different countries approach education?Type your topic in the answer space.