Help!!
Hurry!!!?!?!?
I don't know!!!!!​

Help!!Hurry!!!?!?!?I Don't Know!!!!!

Answers

Answer 1

Answer:

KE = 1/2 M V^2 = 35 kg / 2 * (10 m/s)^2

KE = 17.5 * 100 kg m^2 / s^2 = 1,750 Joules

(B) is the correct answer


Related Questions

Infrared radiation is part of a 'family' of waves that also includes visible light and radio waves. What name is given to this 'family'? Give the full name, not the abbreviation.

Answers

Electromagnetic spectrum

Infrared radiation is a part of electromagnetic waves,which also include the visible light and radio waves.

What are electromagnetic waves?

The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.

Learn more about electromagnetic waves,here:

https://brainly.com/question/8553652

#SPJ2

Viewed from a distance, how would a flashing red light appear as it fell into a black hole?.

Answers

Explanation:

Light rays that pass close to the black hole get caught and cannot escape. so what ends up happening to the light is that it starts bending due to the strong gravitational force of the black hole.

Levi observed properties of three different waves and recorded observations about each one in his chart. which statement is best supported by the table? wave w and y are light waves. wave x is a sound wave. wave w is a light wave. waves x and y are sound waves. waves y is a sound wave. waves x and w are light waves. wave w is a sound wave. waves x and y are light waves.

Answers

For the three different waves observed and recorded, Waves X and Y are light waves. This is further explained below.

What is a wave?

Generally, A wave is simply defined as a disturbance that propagates through a medium from one point to another.

In conclusion,  Wave Z is impossible to classify, Waves X and Y are light waves, and Wave W is a sound wave.

Read more about Wave

https://brainly.com/question/23271222

Answer:

D

Explanation:

How much work do you do on a 25- kg backpack when you walk a horizontal distance of 100m ?

Answers

Answer:

2,500

Explanation:

describe the ways that people are trying to use technology to protect the environment and increase sustainability.

WILL NAME BRAINLIEST please help

Answers

Answer:

One way people are using technology to protect the environment is:

Using digital devices for communicating and storing information means that there is less reliance on paper, which reduces deforestation. Since trees are an important source of oxygen and also absorb carbon dioxide, this further reduces climate change.

Environmental technology has enabled us to capture this naturally occurring energy and convert it into electricity or useful heat through devices such as solar panels, wind, and water turbines.



Explanation:

Have a great of your day
#TheWizzer

Please help answer the following questions ASAP

Answers

Answer:

renewable are fuels that can be reused while non renewable are fuels that can not be used again

Which of the following can explains convection?
A.Hot air is less dense than cold air.
B.The wind blow takes place from higher position to lower position
C.The particles in hot air are lighter than those in cold air.
D.The gas pressure of hot air is greater than that of cold air.
E.The particles in hot air move quicker than that of cold air.

Answers

Answer:

A) would be the best explanation because hot air is less dense and would rise to the top of a column of air

Two thermometers are calibrated, one in degrees Celsius and the other in degrees Fahrenheit. At what temperature are their readings numerically the same

Answers

Answer:

To change degrees Celsius in degrees Fahrenheit, the formula is:

F = 1.8C +32F=1.8C+3

Explanation:

C = 1.8C +32C=1.8C+32

C = -40C=−40

T=-40+273.15=233.15\ KT=−40+273.15=233.15 K

What is the momentum of an object that has a mass of 0.03 grams and a velocity of 1200 m/s2

Answers

answer is 36

because the formulae of momentum is

mass×velocity

Do people actually see me inverted?☹​

Answers

Answer:

of course is clear

Explanation:

very clear

Please help me with the blanks

Answers

Answer:

wavelength and frequency

Explanation:

wavelength is the distance between waves while frequency is the number of times in which the wave occurs.

For brainliest and 100 points
Ben is pushing a small trolley 10 N to the north and but Gary is pushing the trolley 5 N to the south. What is the total applied force on the trolley?

5N
2N
20N
40N

Answers

Answer:

The total applied force on the trolley is 5 N toward the North.

Explanation:

yes

How would the removal of the rabbit population affect the other populations in

the ecosystem?

A.

B.

The field mouse population will decrease.

The snake population will increase.

The lizard population will increase.

The tree population will decrease.

C.

D.

Answers

C the lizard population will increase

15 points!! PLEASE ANSWER! I NEED IT QUICK!
What happens to the energy of a wave if the amplitude of the wave is doubled?

How does the frequency of a wave relate to the energy of the wave?

Answers

Answer:

See below ↓

Explanation:

We know that the energy of a wave is directly proportional to the amplitude of a the wave. That means it directly varies, so when one increases/decreases, the other does the same.

Therefore, when the amplitude of a wave is doubled, the energy of the wave is also doubled.

Similarly, in the case of the frequency of the wave, it is also directly proportional to the energy of the wave.

E ∝ ν

When observed from earth, the wavelengths of light emitted by a star are shifted toward the red end of the electromagnetic spectrum. This redshift occurs because the star is:.

Answers

Answer:

When observed from Earth, the wavelengths of light emitted by a star are shifted toward the red end of the electromagnetic spectrum because: the star is moving away from planet Earth.

A star is a giant astronomical or celestial object that contains a luminous sphere of plasma and bounded together by its own gravitational force.

A redshift can be defined as a displacement (shift) of the spectral lines of celestial or astronomical objects toward longer wavelengths (the red end of an electromagnetic spectrum), as a result of the Doppler effect.

Hence, a redshift is considered to be a subtle change in the color of visible electromagnetic radiation from stars (starlight), as observed from planet Earth.

In conclusion, a redshift occur when observing a star from planet Earth because the star is moving away from planet Earth.

Read more: brainly.com/question/17934476

Explanation:

have a great day :)

Please Help Physics!


1. Sound travels through a guitar string at 600 m/s, making a sound wave in the air with a speed of 333 m/s. In 1–2 sentences, explain how the wavelength and frequency of the wave in the string compare to the wavelength and frequency of the wave in the air.

Answers

The wavelength and frequency of the sound in the string is greater than the wavelength and frequency of the sound in the air.

Wavelength and freqeuncy of the sound

The wavelength and frequency of the sound is determined using the following formulas.

v = fλ

f = v/λ

λ = v/f

where;

f is the frequency of the soundλ is the wavelengthWavelength and frequency of the sound in the string

f = 600/λ

λ = 600/f

Wavelength and frequency of the sound in air

f = 333/λ

λ = 333/f

Thus, the wavelength and frequency of the sound in the string is greater than the wavelength and frequency of the sound in the air.

Learn more about wavelength and frequency here: https://brainly.com/question/10728818

A toy train is going around a circular track of a radius of 1.2 m as shown on the diagram. The train takes 9 seconds to complete one lap of the circular track.
(a) Calculate the speed of the train

(B) on the diagram draw in the train's velocity and acceleration vectors at B. Label clearly.


(c) For the train to move in a circle like this there
must be a centripetal force acting on it.
Explain how this force is being produced

Answers

Explanation:

r=1.2, Period(T) = 9s

a) Speed(V) = ωr

ω = 2 x Pi(3.142) x frequency

frequency = 1/period

therefore; the frequency will be 1/9 = 0.1Hz

Therefore Speed(V) = 2 x 3.142 x 0.1 x 1.2=0.75m/s

C) Centripetal and centrifugal forces are the forces experienced by rotating objects. The centripetal force keeps an object moving in a circle and is always pointed toward the center of that circle. For instance, the gravitational force of the sun is a centripetal force that keeps the Earth orbiting around it. Its direction is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path.

What are some downsides to fossil fuels? (Select all that apply.)

They release large amounts of carbon dioxide when burned.

They are in a limited supply.

They are expensive to extract compared to other forms of energy.

They do not replenish themselves.

Answers

Answer:

They release large amounts of carbon dioxide when burned.

They are expensive to extract compared to other forms of energy.

They do not replenish themselves

Explanation:

Consider the following statements.

A. Heat flows from an object with higher
thermal energy to one with lower thermal energy;

B. Heat flows from an object at higher tem-
perature to an object at lower temperature;

C. Heat flows from an object in liquid state
to an object in solid state.

Which statements are true?

Answers

Answer:The heat flows from an object at a higher temperature to the object at a lower temperature. Thus the option A is correct.

Explanation:What is heat flow?


The flow of heat is the transfer of heat that concerns its generation, use and conversion, and exchange.The heat flow follows the laws of the thermodynamics. Heat will flow from the body that is at a higher temperature and will move towards a body of a lower temperature. Thereby maintaining an equilibrium state. As energy is needed to warm or heat up the cold body there is an exchange of energy that takes place.

1. What is the approximate age of the fossil described in the activity?
1.8 million years
18 million years
.9 million years
90 million years

Answers

Answer:

B.

Explanation:

It should be B. 18 million years ago.


I apologize if it is incorrect-

I hope it helps! Have a great day!

Anygays-

Answer:

B. 18 million years

Explanation:

The answer is B. 18 million years


I hope it helps! Have a great day!

Muffin ^^

A scientist adds different amounts of salt to 5 bottles of water. She then measures how long it takes for the water to boil. What is the responding variable in this experiment? 0 A. The kind of bottles used O B. The brand of salt used O C. The amount of salt added to the water O D. The time it takes for the water to boil

Answers

Answer:

d.the time it takes for the water to boil

Explanation:

it is because salt was added to the water.so the responding variable is the time taken to boil the water

Which is an example of current electricity

Answers

it would be d as your answer

What will happen to the period of a ball-on-a-spring if the ball is replaced by a smaller one with half the mass

Answers

When the ball on a spring is replaced by a smaller ball with half the mass :  The period decrease by 29%

Calculate the Period

We will apply the formula below to calculate period

T = [tex]2\pi \sqrt{\frac{m}{k } }[/tex]

 where :

T₁ / T₂ = [tex]\sqrt{\frac{m_{1} }{m_{2} } }[/tex]    where m₂ = m₁ / 2

Therefore :

T₂ = [tex]\frac{T_{1} }{\sqrt{2} }[/tex]   = 0.71 T

Hence we can conclude that the period will decrease by 29% ( i.e 100 - 71 ).

Learn more about Period calculation : https://brainly.com/question/10728818

Since many wavelengths of light are measured in nanometers, it's useful to know that planck's constant (h) multiplied with the speed of
light (c) is equal to 1240 eVnm.
This is useful, as E = hf, or otherwise written as E= .
With this information in mind, solve the following:
A photon has 1.6 eV of energy. What is the wavelength of this photon?
O a
410 nm
Ob
775 nm
Ос
1984 nm
Od
306 nm

Answers

Answer:

E = h f      and since f = c / λ     we have E = h c / λ

Thus  λ = h c / E

Also, 1 ev = 1.6E-19 C

λ = 6.63E-34 * 3.0E8 / (1.6 * 1.6E-19)

λ = 6.63 * 3.0 / (1.6 * 1.6) * E-7

λ = 7.77E-7 = 777 nanometers

(B) is correct

(b) Fig. 7. 2 shows a metal sphere on an insulating support.

C

Fig. 7. 2

A student has available two rods, one charged positively and one charged negatively. Using

one of these rods, she gives the sphere a uniform negative charge by induction

State which rod she chooses, and describe the procedure she follows.

Answers

The rod she chooses, to give the sphere a uniform negative charge by induction is the positively charged rod.

Charging by induction

Charging an object by induction is a process of inducing a charge on the object by bringing another charged object close to it.

Charge on the sphere

When a positively charged rod is brought near a neutral sphere (equal negative and positive charge),  the positive charge of the rod will repel the positive charge of the sphere, leaving the sphere with excess negative charge.

Thus, the rod she chooses, to give the sphere a uniform negative charge by induction is the positively charged rod.

Learn more about charging by induction here: https://brainly.com/question/8418256

Please Answer this question

Answers

Answer:

T = 14.7 N

Explanation:

When released the two blocks will accelerate

See diagram below  (hope it is not too confusing or unclear)

What is the angular speed, in rad/s, of a flywheel turning at 813. 0 rpm?.

Answers

Answer:

The angular speed will be 85.13 rad/sec

Explanation:

Distinguish between infrasonic and ultrasonic sound waves.

Answers

How we could distinguish them is that the infrasonic sounds are the lower limit of human hearing while ultrasonic sound is above human hearing. The sound of frequency more than 20,000Hz are called ultrasonics while the frequency less than 20Hz are called infrasonics.

Explanation:

I hope it helps! Have a great day!

Anygays-

The worker in the picture is
a.) letting the pulley do all the work
b.) not doing work because he is using a pulley
c.) doing work because he is moving the bale of cotton
d.) transforming mechanical energy to potential energy

Answers

Answer:

the worker is doing work because he is moving the bale of cotton

Copper (II) chloride reacts with magnesium nitride

Answers

Answer:

I don't know

Explanation:

because I'm not smart

Other Questions
Which is an example of an inherent power of the federal government? Which term describes the exchange of oxygen and carbon dioxide between the blood and the cells of the body?External respirationInternal respirationAerobic respirationAnaerobic respiration Our early atmosphere was anoxic- without free oxygen; how did this change?A primitive organisms carrying out chemosynthesisB primitive organisms carrying out photosynthesisC primitive organisms carrying out cellular respirationOR A AND B How does information technology impact the economic sector? choose three answers. economists are better able to predict how resources should be allocated. governments can make better economic policy decisions. it has become more difficult for businesses to identify when shortages will occur. the amount of time to share data between locations has steadily increased. employment in information technology sectors has grown. can you guys help me plss thank you Demarcus has to wrap a gift for his friend's birthday party. the gift is in a rectangular box with the dimensions shown below. he's trying to figure out how much gift wrap he needs to cover the entire box. should he calculate the total surface area or the lateral surface area? pick the right measurement and then calculate it for him. in your answer, specify whether he should use total surface area or lateral surface area. calculate the one you choose, give that measurement of the box, and then explain how you calculated it. grade 5 mathematics item specification c1 ti John told me he would be . Minutes late. A. A little B. Little C. A few D. Some help please!!!!!11!!!1!! why does a week have seven days Which outcome is most likely to occur along a transform boundary?earthquakesdeep-sea trenchesrugged mountain rangeshot spots Use point-slope form to write the equation of a line that has a slope of and passes through (-3,-1). Write your final equation in slope-intercept form. Show work Infants grab large things before they can pick up tiny objects. What type of development does this represent A bag with 12 marbles has 12 blue marbles. A marble is chosen from the bag at random. What is the probability that it is blue?Write your answer as a fraction in simplest form. Melanie is designing a new board game, and is trying to figure out all the possible outcomes. How many different possible outcomes are there if she rolls a fair die in the shape of a pyramid that has four sides labeled 1 to 4 and spins a spinner with 5 equal-sized sections labeled Monday, Tuesday, Wednesday, Thursday, Friday? Which of the following actions is aimed at protecting forests for the future?A.reforestationB.clear-cuttingC.deforestationD.forestry If m/n = 5, then what is the value of m^2 - 25n^2? Which recursive sequence would produce the sequence 2, 11, 38,...? Plot the image of triangle AABC under a reflection across the y-axis. Which american poet received more than 50 honorary degrees?. When it is 8:00 a.m. in damascus, it is 4:00 p.m. in vladivostok. if your plane departs from vladivostok at 10:45 a.m. local time and lands in damascus at 12:30 p.m. local time, how long was the flight? a. 1 hour, 45 minutes b. 5 hours, 45 minutes c. 9 hours, 45 minutes d. 13 hours, 45 minutes