From an apple tree 2 metres high, a 100g mass apple fell of the tree, what work did it do?

Answers

Answer 1

Answer:

Workdone = 1.96 Nm

Explanation:

Given the following data;

Mass = 100g to kg 100/1000 = 0.1Kg

Distance = 2m

To find the workdone;

First of all, we would determine the force acting on the apple

Force = mass * acceleration due to gravity

But, acceleration due to gravity is equal to 9.8m/s²

Force = 0.1 * 9.8

Force = 0.98N

Now, we can find the workdone using the formula;

Workdone = force* distance

Substituting into the equation, we have

Workdone = 0.98 * 2

Workdone = 1.96 Nm


Related Questions

Consider a gate whose Shape is a parabolic arch of height 3m and base width 3m. If the origin of the coordinate system is at the vertex, then what is the equation of the edge of the gate?​

Answers

Answer:

An arch in a memorial park, having a parabolic shape, has a height of 25 feet and a base width of 30 feet.

The equation of the parabolic arch with the height of 3m and base width of 3m is x²= 3/16 y.

What is parabolic equation?

Any point on a parabola is at an equal distance from both the focus, a fixed point, and the directrix, a fixed straight line. A parabola is a U-shaped plane curve. An essential component of a conic section is a parabola.

A parabola is formed by cutting a right circular cone in half along a plane perpendicular to the cone's generator. It is a locus of a moving point whose separation from the focus is equal to its separation from a stationary line (directrix) Focus refers to the fixed point, and directrix refers to the fixed line.

The equation of a parabola is x² = 4ay.

Height of the arch = 3 m

base width = 3 m

thus it goes through the point (3/2, 3)

then, (3/2)²  = 4 a 3

a =  9 / (4× 12) = 3 /16

Then the equation of the parabolic arch becomes  x² = 3/16 y.

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PLS ANSWER FAST WILL GIVE BRAINLY!!!


How can you know if something has energy?

Answers

Answer:

You'll see it without noticing

Explanation:

for example: Magnets can pull to one thing, but using the other side of the magnet with the other magnet can push away the magnets, and turn it to their way of pulling, also electricity, movement, were making energy everyday, just by moving

How is impact force and impact time related when describing the same impulse?

a) Inversely proportional
b) Directly proportional
c) They are opposite to each other
d) None of the above

Answers

Answer:

The correct option is (a)

Explanation:

Impulse is given by the product of force and time. It is denoted by J. So,

[tex]J=F\times t[/tex]

or

[tex]F=\dfrac{J}{t}[/tex]

It can be seen that the relation between the force and the impact time is inverse. Hence, the impact force and impact time possess inverse relation.  

What is the first step in cell division?

Daughter cells create copies of their components.

Daughter cells grow in an unregulated fashion.

Parent cells are created from daughter cells that split.

Parent cells create copies of their components.

Answers

Answer:

d

Explanation:

Answer:

D.)

Parent cells create copies of their components.

Explanation:

edge2021

PLEASE HELP ASAP
Three gases are at the same temperature and so have the same kinetic energy . The atomic mass of gas 1 is 10amu the atomic mass of gas 2 is 25 and atomic mass of gas 3 is 8. Which gas will have the greatest velocity ?​

Answers

Answer:

We mentioned in the study section of Lecture 2 that hydrogen and oxygen combine in the ratio of 1 to 8, but that this is not enough information for leading to the conclusion that two hydrogen atoms combine with one of oxygen to form a water molecule. A key idea is attributed to Avagadro who said that equal volumes of gas (at the same temperature and pressure) contain equal numbers of constituent atoms or molecules. Experiments show that two liters of hydrogen gas will combine with one liter of oxygen gas to form two liters of water vapor. Each hydrogen molecule in hydrogen gas consists of two hydrogen atoms bonded together. Likewise, two oxygen atoms bind to make a oxygen molecule.

A "model" of a physical process is used to represent what one actually observes, even though this is an "ideal" model and not expected to be correct in all respects. However, it is a good enough model to explain many of the properties of gases with sufficient accuracy.

The motion of gas particles can be used to explain the pressure exerted and the temperature of a gas. The pressure on a surface is due to the force on that surface divided by its area. The force comes about from the multiple impacts of individual gas particles. Temperature, on the other hand, is DEFINED in terms of the average kinetic energy assocated with the motion of the gas particles. The greater the kinetic energy, the greater the temperature. See the apparatus shown in Figure 7.6 of the text which gives a simple way of measuring the distributions of speeds of atomic particles.

To visualize how gas particles colliding with a container create pressure, see Website II.

Gas particles move in all possible directions with differing speeds. The Kinetic Energy (KE) of a gas particle is equal to 1/2 its mass times its speeds squared. That is KE = 1/2 M x V2 , where M is the mass of the gas particle and V is its speed. The gas particles have a range of speeds, just like cars on a road, but it is the average of the speed squared times the mass, or the average kinetic energy which characterizes the temperature of a gas.

High temperature is associated with high kinetic energies and low temperatures are associated with low kinetic energies. However, keep in mind that the kinetic energy, and in this case the temperature, is proportional to the mass times the speed squared. So heavy particles moving more slowly will have the same kinetic energy as light particles moving more rapidly. Also, because the kinetic energy varies as the square of the speed, if two particles have the same mass, but one moves twice as fast as the other, it will have four times the kinetic energy (or temperature).

If temperature is associated with kinetic energy of a gas, one could ask at this point what controls the temperature of solids and liquids. It turns out that it is the kinetic energy of the constituent atoms and molecules that characterize the temperature of liquids and solids as well. We show in class a transparency picturing a solid with its atoms rigidly connected to each other. We will discuss more about liquids and solids in the next lecture, based on chapter 8. However, for now, let's keep in mind that the atoms or molecules in a solid, although bound to its neighbors in a rigid structure, can oscillate back and forth, and it is this motion that characterizes the temperature of a solid (or in a similar manner, of a liquid as well). As before, rapid oscillations mean high temperatures, and slower oscillations are lower temperatures.

4 - The Three Temperature Scales

There are three temperature scales. In the United States, we commonly use the Farenheit scale while in most other nations, the Celsius or Centigrade scale is used. Figure 7.10 shows these two scales side by side. Water boils at 212 degrees Farenheit or 100 degrees Centigrade. Water freezes at 32 degrees Farenheit or zero degrees Centigrade. However, the most important temperature scale for scientific calculations is the absolute temperature scale, or the Kelvin scale. Zero degrees Kelvin is the coldest possible temperature: it can be physically interpreted as the situation where the atoms or molecules have zero kinetic energy...so this is a very natural temperature scale. Zero degrees Kelvin is also -273 degrees Centigrade. Water freezes at +273 degrees Kelvin and zero degrees Centigrate. Hence, a difference of one degree is the same on the Centigrade and Kelvin scales, but the zero points are different.

R.S. Panvini

9/2/2002Explanation:

How is a mixture different from a compound?​

Answers

Answer:

MIXTURE

1 In a mixture two or more substances are mixed together (elements or compounds)

2Therd is no fixed proportion of the constituents

3 The mixture may or may not be homogenous

4 There is no chemical reaction between the constituent substances

5 There cannot be a chemical formula for a mixture

6 Heat or any other type of energy is not required or released during the formation of a mixture

7 The constituents can be separated using simple physical processes

8 The properties of the constituents are retaied

COMPOUND

1 Two or more elements form a compound

2 The constituent elements combine in a definite proportion to form a compound

3 The elements are in a definite proportion in any part or fraction of the compound

4 There is a chemical reaction in the formation of a compound

5 A compound has always a chemical formula for a compound

6 Heat orany other energy is often required for the formation of a compound or released during the formation of a compound

7 The constituent elements can't be separated using simple physical processes in case of a compound

8 The properties of the constituent elements are not retained in the compound

Which statements correctly identify chart of Earth and Jupiter?

Answers

Answer:

b

Explanation:

Answer:

The first box, second box, and fourth box are correct. I think the fifth might be correct...not completley sure about the fifth box.

Explanation:


When Maria rubbed her solid graphite pencil against paper, it easily left a clear streak on the paper. Which model could represent graphite?

Answers

Answer:

B

Explanation:

:p

Option B is the correct answer.

Graphite has a layered structure, every layered structure has rings which consists of six carbon atom.

What is Graphite and what are its characteristics?

   Graphite can be also known as black lead. As it can be structured with hexagonal shape it was also made as octahedral and tetrahedral which is known to be as diamond. Graphite is formed by carbonaceous compound, which can be solidified as magmatic carbon. Graphite can be taken from several ancient rocks, marbles, quartzite, under the soil, etc..  The graphite can be found easily by seeing the honeycomb shape, hexagonal structure, a molecule with six carbon atoms. These were also used in pencil leads, batteries, nuclear reactors, polishes, etc..

So, when Maria rubbed her solid graphite pencil against paper, it easily left a clear streak on the paper because of the atom presence and it hexagonal honeycomb structure.

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An optical device that reflects light ?

Answers

Answer:

Mirror

Explanation:

an optional device that reflects light is a mirror

pls pls pls pls help!!!!!
A 96 kg man is standing in an elevator. The man experiences a net force when the elevator moves at an acceleration of 4.0 m/s2 upward and downward. Find both net forces

Answers

Answer:

The net upward force the man experiences is approximately 1,324.8 N

The net downward force the man experienced is approximately 556.8 N

Explanation:

The given mass of the man, m = 96 kg

The acceleration of the elevator, a = 4.0 m/s²

According to Newton's third law of motion which states that action ad reaction are equal and opposite, when the elevator moves upwards, we have;

The net force the man experiences, F = Gravitational force, m·g + The force of the elevator pushing upwards, m·a

∴ ↑F = m·g + m·a

Where;

F = The net force the man experiences

m = The mass of the man = 96 kg

g = The acceleration due to gravity ≈ 9.8 m/s²

a = The acceleration of the elevator = 4 m/s²

∴ ↑F = 96 kg × 9.8 m/s² + 96 kg × 4 m/s² ≈ 1,324.8 N

The net upward force the man experiences ≈ 1,324.8 N

When the elevator moves downwards, we have;

The net force the man experiences, F = Gravitational force, m·g + The loss of the gravitational force as the floor moves further downwards, -(m·a)

∴ F = m·g + -(m·a) = m·g - m·a

F = m·g - m·a

∴ ↓F = 96 kg × 9.8 m/s² - 96 k × 4 m/s² ≈ 556.8 N

The net downward force the man experienced ≈ 556.8 N

If 16,700 J of work is done to shoot the human cannonball down a 3.05 m barrel, then how much force is applied to the person to fire them out the cannon?

Answers

Answer:

[tex]5,480\:\text{N}[/tex]

Explanation:

The formula for work is given by [tex]W=F\Delta x[/tex], where [tex]F[/tex] is the force applied over a distance of [tex]\Delta x[/tex].

Plugging in given values, we get:

[tex]16,700=F\cdot 3.05,\\F=\frac{16,700}{3.05},\\F\approx \boxed{5,480\:\text{N}}[/tex](three significant figures).

The Escape speed at the surface of a certain planet is twice that of the earth. If the planet has radius twice of the Earth. what is its mass in unit of earth's mass?​

Answers

Answer:

1.32 × 1022 short tons

Explanation:

hope this helps

The required mass of the planet is 8 times the mass of the earth.

Given that,
The Escape speed at the surface of a certain planet is twice that of the earth. The planet has a radius twice of the Earth. what is its mass in unit of earth's mass is to be determined.

What is escape velocity?

An object with this velocity at the earth's surface will completely escape the earth's gravitational field, even after accounting for atmospheric losses.

here,
The escape velocity of the planet = 2 Escape velocity of the earth
[tex]\sqrt{{2GM_p}/r_p} = 2\sqrt{2GM_e/r_e}[/tex]
Substitute the values and square both sides,
[tex]{{2GM_p}/2r_e} = 4*{2GM_e/r_e}\\M_p = 8M_e[/tex]

Thus, the required mass of the planet is 8 times the mass of the earth.

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How does Newton's third law of motion apply to how the planets move?

Answers

According to Newton's third law of motion, every action has an equal but opposite reaction. When the force of thrust is exerted on an object, it will cause the equal but opposite reaction of moving the object through the air.

describe the steps that occurs in the process of fission

Answers

Answer:

--In the first step, a uranium-235 atom absorbs a neutron, and splits into two new atoms (fission fragments), releasing three new neutrons and a large amount of binding energy. -- In the second step, one of those neutrons is absorbed by an atom of uranium-238, and does not continue the reaction.

OR

Nuclear fission begins when a neutron hits the nucleus of an atom. The nucleus splits in two and releases thermal energy and releases more neutrons. The neutrons hits the nuclei of more atoms, splitting them and releasing more energy and neutrons.

I hope this helps!!

Dr. Lopez is Thomas's doctor. During his appointment, Thomas says he thinks
he has insomnia and wants to be on a specific drug. What should Dr. Lopez
do?
O A. Conduct an exam. Thomas might have a drug dependence.
O B. Dr. Lopez can't do anything at all. Thomas needs to talk to a
pharmacist about this.
O C. Trust Thomas and prescribe him the medication.
O D. Suggest Thomas use a different drug.

Answers

A. Conduct an exam. Thomas might have a drug dependence.

(Please mark Brainliest! :D)

what determines the color of light?

1. brightness
2. wavelength
3. amplitude
4. reflection rate

Answers

The answer is wavelength because The wavelength of visible light determines the color that the light appears. Light with the longest wavelength appears red, and light with the shortest wavelength appears violet. ... The wavelengths of visible light that an object reflects or transmits determine the color that the object appears to the human eye

Answer:

2. wavelength

Explanation:

Light moves in waves. Light waves are different from sound waves in that light travels in transverse waves (as opposed to longitudinal, which is how sound waves travel). A light wave that travels in a direction is called a light ray.

Just like other waves, light waves have a wavelength and amplitude. The wavelength determines the color; we will learn more about this in the lesson on color. The amplitude of a light wave determines the brightness. Just as large amplitudes in sound waves result in sounds with greater intensities (louder sounds), large amplitudes in light waves result in light with greater intensity (brighter light).


A car travels at 12 m/s. The car then accelerates at 3 m/s2 until it reaches a speed of 18m/s.
Use the formula: (final velocity)2 – (initial velocity)2 = 2 x acceleration * distance
Calculate the distance the car travels.
A
2 m
B
6 m
С
30 m
D
60 m

Answers

Answer:

С. 30 m

Explanation:

Given the following data;

Initial velocity, U = 12m/s

Final velocity, V = 18m/s

Acceleration, a = 3m/s²

To find the distance, we would use the third equation of motion;

V ² = U² + 2aS

Substituting into the equation, we have

18² = 12² + 2*3*S

324 = 144 + 6S

6S = 324 - 144

6S = 180

S = 180/6

Distance, S = 30 meters.

How many significant figures does 1740200 have?

Answers

It has 1772 singles figures and the internet is still available in the internet and the video.

motion is the act of ___
the options are movement, feeling, chemical engergy and sleep

Answers

it’s movement i believe :)

Answer:

hi

Explanation:

Explain What is electrical energy and why do we need this energy

Answers

Answer:

WHAT IS ELECTRICAL ENERGY?

Electrical energy is the most convenient form of energy for most human uses. Electrical energy is easy use and move from one location to another, but it is almost impossible to store in any large quantity. It can be used for running computers and most appliances, home heating, and even transportation.

ELECTRICITY is used by industry, households, and businesses—accounting for 18% of end use energy worldwide.

Electrical energy is very convenient, and as a result more and more of the energy used by a high energy society is in the form of electricity, see figure 1. The rate of electrical energy use is growing faster than the rate of electricity use, see figure 2.

WHY DO WE NEED ELECTRICAL ENERGY?

Electrical energy is used throughout the world to power devices, appliances and methods of transportation utilized in daily life. To make things operate, electrical energy must be emitted from energy sources such as power plants, to enable an object to consume the power it needs to function.

Which of the following choices is NOT a common injury in sports?
A.
concussion and muscle strains
B.
hemorrhage and arthritis
C.
ligament sprains and tears
D.
bone fractures and ankle sprains

Answers

B isn’t arthritis is caused when you get older but in this case it’s not b and hemorrhage is possible but not arthritis

The choice that is not a common injury in sports is hemorrhage and arthritis. Details about injuries can be found below.

What is sport?

Sport is any activity that uses physical exertion or skills competitively under a set of rules that is not based on aesthetics.

Injuries are bound to occur during sporting activities and they are as follows:

ConcussionFracturesLigament sprainsankle sprainsmuscle strains

Hemorrhage, which refers to the heavy release of blood within or from the body and arthritis, which is an inflammation of a joint or joints are not common injuries involved in sports.

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Independent practice
1.
a.
2.
Calculate the density p (in kg/m) for each of the following:
m = 10 kg and V=10 m3
b. m = 160 kg and V = 0.1 m3
C. m = 220 kg and V = 0.02 m3
A wooden post has a volume of 0.025 m' and a mass of 20 kg. Calculate its
density in kg/m
Challenge. A rectangular concrete slab is 0.80 m long, 0.60 m wide and 0.04
m thick. |
Calculate its volume in m?,
b. The mass of the concrete slab is 180 kg. Calculate its density in kg/m.
3.
a.

Answers

Explanation:

formula: Mass

Density x volume

2a) m=10kg v=0.3m³

10÷0.3=33.3 kg/m

2b) m = 160 kg V=0.1m³

160÷0.1=1600 kg/m

2c) m = 220 kg V = 0.02m³

220÷0.02=11000 kg/m

A wooden post has a volume of 0.025 and a mass of 20kg. Calculate its density in kg/m.

density = volume ÷ mass

20÷ 0.025=800 kg/m

Challenge: A rectangular concrete slab is 0.80m long, 0.60 m wide and 0.04m thick. Calculate its volume in .

Formula : Length x width x height = Volume

0.80 x 0.60 x 0.04 = 0.0192m³

B) The mass of the concrete slab is 180 kg. Calculate its density in kg/m.

density = volume ÷ mass

180 ÷ 0.0192 = 9375 kg/m

A body accelerates uniformly from rest at 2ms² for 5 seconds . calculate its average velocity in this time.​

Answers

Answer:

0.4

Explanation:

average velocity =d/t

2/5=0.4

0.4m

DUE IN 4 HOURS! HELP! WILL MARK BRAINLIEST IF DONE WITHIN THE HOUR!
Maisey is running 12mph and comes to an abrupt stop in 3 seconds when she hears her name called. What is her acceleration?

Answers

Answer:

~ 0.001 m/s^2

Explanation:

If you convert 12 miles per hour to, miles per second, it makes this easier to calculate, so do that first

12m/ 1 hour * 1 hour/ 60 mins * 1 min/ 60 sec = ~0.003333 miles per second.

Next remember that acceleration = velocity/time

So our new velocity: 0.003333 over time: 3 seconds = the acceleration.

0.003333/3 = 0.001 m/s^2

the court that has the executive power on review cases from regional trial courts​

Answers

Answer:

courts of appeals

Explanation:

hope this helps

what is a possible explanation for a set of facts that can be tested by further investigation called?

1. Questions
2. Hypothesis
3. Experiment
4. Summary

Answers

Answer:

Hypothesis.

Explanation:

Not a question, not a summary, and not an experiment.

A student observes a shadow move across the sun during a solar eclipse. Which list represents the position of Earth, the sun, and the
moon during this event?

A.sun, Earth, moon

B.moon, sun, Earth

C.Earth, sun, moon

D.sun, moon, Earth

Answers

It goes sun moon earth the moon is blocking us from seeing the sun.

The position of the Earth, Sun, and moon during the solar eclipse, a student observes a shadow moving across the sun is Sun, moon, Earth, so option D is correct.

What is a solar eclipse?

When the Moon passes in front of the Sun, blocking all or part of Earth's view of it, a solar eclipse occurs. The Moon is closest to the plane of the Earth's orbit when there is a new moon and such an alignment. During a total eclipse, the Moon fully obscures the Sun's disk. Partial and annular eclipses only block out a section of the Sun. A solar eclipse occurs naturally. Solar eclipses were sometimes linked to supernatural sources or interpreted as an ill omen in several ancient and modern societies.

During a solar eclipse, the moon comes in between the earth and the sun therefore the shadow moves across the sun during a solar eclipse observed by the student, the position is Sun, moon, and earth.

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How fast is a 90kg man running if his kinetic energy is 720 J?

Answers

Answer:
4 m/s
Explanation:
KE=1/2mv^2
720=1/2(90)
720=45v^2
divide by 45
16= v^2
over the square root
4=v
v= 4m/s

A canoe moving down the river with a kinetic energy of 5J and a speed of 0.5m/s. What’s the mass of the canoe

Answers

4.16356553610438833654693

A power source of 6.0 V is attached to the ends of a
capacitor. The charge is 12 C.

Answers

...................................
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Which expression is equivalent to 4a+2b A.a+a+a+a+b+b B. 4+2+a+b C.6(a+b) D.4+a x 2+b 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? 3*3*3*3= 81 is an example of ___Exponential formStandard formExpanded formSlope-intercept form difference between plants and animal cell You are flying from Houston to Chicago. You leave Houston at 7:30 A.M. At 8:35 A.M. you fly over Little Rock, a distance of 455 miles. 27. Write a linear equation that gives the distance in miles, y, in terms of time, x. Let x represent the pumber of minutes since 7:30 A.M. 28. Approximately what time will you arrive in Chicago if it is 950 miles from Houston? HELP ME PLEASE!!! I NEED HELP! Is 0.3 greater than 0.09 Write in quadratic form f(x)=(x+2)^2 yall biology is not it i really need help with it 1/2x+4=20 solve for x.. Help? Where was Napoleon from? How did this affect him early in his career? What nations did Napoleon defeat in his early years? How old was he when he earned the rank of brigadier general? Describe Napoleons goals in conquering Egypt. Was he successful?What were the steps that occurred that ultimately led to Napoleon becoming emperor?What steps did Napoleon take to mend the bad relationship with the Catholic Church?What was the Napoleonic Code (1804)? What were positives and negatives of this Code?How was Napoleons bureaucracy set up? How about the aristocracy?What was Napoleons policy on freedom of the press?What nations did Napoleons armies defeat and did he rule over 1805-1812?What good things did Napoleons armies spread as they conquered countries? Why was Napoleon never able to defeat Great Britain? What happened at the Battle of Trafalgar (1805)? What was the Continental System? Why was it not successful?What is nationalism? How did Napoleon's armies unwittingly spread it across Europe? What Japanese attack on Hawaii, a US territory, prompted the U.S. to enter World War II? 4. An expression is shown.4x1062x 102Write an equivalent expression in scientific notation.x 10 What is the answer for this 5c + 9 -2c -7 If anyone could help me with this question that would be great Plz help............. A prism is 6 1 6 units.Volume = ______ units3 simplify the followinga) 5(3a - 45b) 4(a + 2b - 1 A square pyramid and a cube have the same total surface area. The width of the cube is 8 centimeters. The base of the pyramid is equal to base of the cube. What is the slant height of the square pyramid? If f(x) = 2x + 1 then f(3)=