a mountain climber weighs 42.0 N. If he climbs a hill 100m high. Calculate the work done in joules​

Answers

Answer 1

Answer:

The answer is 4200 J.

Explanation:

The formula of work done is, W = F×D where F is the force of an object and D is the distance. Then you just substitute the values into the equation :

W = F×D

F = 42N

D = 100m

W = 42 × 100

= 4200 J

Answer 2

The work done by the mountain climber who weighs 42.0 N and climbs a hill 100 meters high is 4200 joules, calculated using the formula for work done W = Fd.

The student's question relates to the concept of work done, which is a topic in Physics. To calculate work done, you can use the formula W = Fd, where W is work, F is force, and d is displacement (in the direction of force). In this case, the displacement would be the vertical height the mountain climber ascends, which is 100 meters.

The force is the weight of the mountain climber, which is given as 42.0 N. Applying the formula W = Fd, we get W = 42.0 N * 100 m, which equals 4200 joules. This represents the gravitational work done by the climber as he elevates himself against the pull of gravity over a vertical distance of 100 meters.


Related Questions

Garrick rubs an inflated balloon against his hair. He then touches the balloon against a non-conducting wall.
Which picture shows how the charge on the balloon and the wall are distributed?

Answers

Answer:

Figure A

Explanation:

At first, the inflated balloon is rubbed against the hair.

In this situation, the balloon is charged by friction: because of the friction between the surface of the balllon and the hair, electrons are transferred from the hair to the surface of the balloon.

As a result, when the balloon is detached from the hair, it will have an excess of negative charge (due to the acquired electrons).

Then, the balloon is placed in contact with the non-conducting wall.

The non-conducting wall is initially neutral (equal number of positive and negative charges).

Because the wall is made of a non-conducting material (=isolant), the charges cannot move easily through it. Therefore, even though the charges on the wall feel a force due to the presence of the electrons in the balloon, they will not redistribute along the wall.

Therefore, the charges on the wall will remain equally distributed, as shown in figure A.

In the center of the Milky Way galaxy is a
a
Black hole
b
Neutron star
C
Supernova
d Nebula

Answers

The answer is...

a.) black hole

Answer:

A.Black hole

Explanation:

The Galactic Center is the rotational center of the Milky Way galaxy'; it is a supermassive black hole of 4.100 ± 0.034 million solar masses which powers the compact radio source Sagittarius A*

a driver's foot presses with a steady force of 20N on a pedal in a car as shown.

Answers

Answer:

160N

Explanation:

Moments must be conserved - so.

[tex]20 * 0.4 = F * 0.05[/tex]

[tex]F=\frac{20*0.4}{0.05} = 160[/tex]

A driver's foot presses with a steady force of 20 N on a pedal in a car, so the force F pulling on the piston is 160 N. Hence, option D is correct.

What is Force?

A force in physics is an input that has the power to change an object's motion. A mass-containing object's velocity can vary, or accelerate, as a result of a force. Intuitively, a pushing or a pull can also be used to describe forces. Being such a vector quantity, a force does have magnitude and direction. The SI unit metric newton is used to measure it (N). The letter F stands for force.

According to Newton's second law's original formulation, an object's net force is equal to the speed that its momentum is changing over time.

From the given data in the question,

The momentum must be conserved,

20 × 0.4 = F × 0.05

F = (20 × 0.4)/0.05

F = 160 N

Therefore, the force is 160 N.

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Can trees be replenished by nature?

Answers

Answer:

yes

Explanation:

While escaping from a building in which a fire is burning, 40 people pass through a smoky
room in which the CO volume fraction
1000 uL/L, the HCN volume fraction
uL/L, and the C02, volume fraction is
0.02. Despite some visible smoke in the
they cross the room in about 10 seconds.
Calculate the fractional effective dose of
narcotic gases each person has accumulated
and estimate whether all of them will make
to the exit door.

Answers

my bad  i clicked the wrong question to do sorry i wish i could help but im dumb lol

Which type of element seeks to gain electrons?

Answers

Isotopes each of two or more forms of the same element

Answer:

Non-metals

Explanation:

when they form ionic compounds do so by gaining electrons. This due to the fact that they have high ionization energies and high electron affinities (referring to their ability to collect electrons). When they do form ions, they are of negative charge and are called anions.

if the pH of a solution decrease's, is the solution getting more acidic or lees acidic

Answers

Answer:

The solution becomes more acidic.

Explanation:

As the pH of a solution decreases, the concentration of hydrogen ions [H+] increases. Acidic solutions have a higher concentration of hydrogen ions and a lower pH.

I hope this helped. :)

17. Which sound has the highest pitch? 156 Hz (hertz); 258 Hz (hertz); 14 dB (decibels): 563 dB

Answers

Answer:

258Hz

Explanation:

as 14 and 563 are measurings of decibels which are loudness. 156Hz is a lower pitch than 258Hz

Final answer:

The highest pitch among the given options is 258 Hz, as pitch is related to frequency. The higher the frequency, the higher the pitch. Decibels (dB) measure loudness, not pitch.

Explanation:

The sound with the highest pitch among the options given, 156 Hz (hertz) and 258 Hz (hertz) is 258 Hz. Pitch is directly related to the frequency of the sound. The higher the frequency, the higher the pitch. Therefore, a sound wave with a frequency of 258 Hz is perceived as a higher pitch than one with a frequency of 156 Hz. However, the units dB (decibels) mentioned are units of loudness or intensity of the sound, not pitch, so they cannot be compared in terms of pitch.

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A compound composed of a metal and nonmetal is exposed to an electric current
attached to a light bulb. What do you expect should happen?
A.Light bulb turns on
B.Light bulb turns off
C.Light bulb flickers dimly
D.Light bulb gets colder

Answers

Answer:

A light bulb turns on

Explanation:

When a metal-nonmetal compound conducts electricity, the connected light bulb will turn on, indicating that the electric current is flowing through and the substance is an electrical conductor.

When a compound composed of a metal and nonmetal is exposed to an electric current and connected to a light bulb, the expected observation is that the light bulb will shine, indicating that the electric current is flowing through the compound. This implies that the substance being tested is an electrical conductor. Examples provided in the background information highlight that the flow of currents can lead to various results such as the warming of a wire in a circuit, which might lead to a continuous flow of electricity in the case of a thermocouple, or the attraction between warm and cold ends of a compound wire.

When a light bulb is connected in a circuit and current flows through it, the filament of the bulb heats up and emits light due to its resistance. In some cases, as with incandescent lights, this is not energy-efficient due to the heat produced. However, if the resistance in the circuit increases, we would expect the bulb to emit redder light, as the temperature of the filament would decrease, shifting the color spectrum towards the red end due to a decrease in energy emission.

Thus, for the choices provided, the answer would be A. Light bulb turns on, as long as the circuit remains closed and the substance allows for sufficient current to flow.

The atomic number of an element is 22 while its mass number is 48. How many neutrons does the element have

Answers

Answer:

The answer is 26 neutrons

Explanation:

Final answer:

The element with an atomic number of 22 and a mass number of 48 has 26 neutrons. This is calculated by subtracting the atomic number from the mass number.

Explanation:

The question asks how many neutrons does an element have, given that its atomic number is 22 and its mass number is 48. In chemistry, the atomic number represents the number of protons in an atom, in this case, 22. The mass number represents the sum of the number of protons and neutrons. Therefore, if you subtract the atomic number (protons) from the mass number (protons + neutrons), you will get the number of neutrons.

Mathematically, this can be represented as: Neutrons = Mass number - Atomic number. In this situation, the number of neutrons would be 48 (mass number) - 22 (atomic number), which equals 26 neutrons.

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Modern dual-processing theory is the idea that our minds have —
tracks.
O
A. conscious and unconscious
O
B. emotional and rational
O
C. conscious and preconscious
O
D. subconscious and conscious

Answers

Modern dual-processing theory is the idea that our minds have conscious and unconscious tracks. A

Answer:

conscious and unconscious

Explanation:

What areas in the United States are most like the grasslands of Kenya?

Answers

In United states,  the grasslands are seen in the great plains, prairies, and in the intermountain west regions. They are mostly seen in Oklahoma, Kansas, Nebraska, South Dakota etc.

What are the main area of grass lands in united states ?

The grasslands of Kenya are part of the East African savanna, which is characterized by warm temperatures, seasonal rainfall, and a mix of grasses and scattered trees. In the United States, similar grasslands are found in several regions, including:

The Great Plains: This region covers much of the central and western United States, and includes states such as Texas, Oklahoma, Kansas, Nebraska, South Dakota, and North Dakota. The Great Plains are characterized by a mix of grasses and scattered trees, and experience seasonal variations in rainfall.

The prairies: These are grasslands found in the central and western parts of the United States, including states such as Iowa, Illinois, Minnesota, Missouri, and Wisconsin. Like the Great Plains, the prairies are characterized by a mix of grasses and scattered trees.

The Intermountain West: This region covers parts of the western United States, including states such as Colorado, Wyoming, Montana, and Idaho. The Intermountain West is characterized by high-elevation grasslands and scrublands, which are adapted to the region's arid climate and rocky soils.

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The Great Plains in the United States are most similar to the grasslands of Kenya, as both are characterized as temperate grasslands dominated by grasses.

The areas in the United States that are most like the grasslands of Kenya, particularly the savannas of the Taita Hills Wildlife Sanctuary, are the Great Plains. The Great Plains region stretches across the central part of the US and is characterized by vast grasslands. This similarity is due to both regions being temperate grasslands, where the dominant vegetation is grasses and rainfall is moderate, creating an environment that does not support dense forests but does support a rich variety of grasses and herbaceous plants. The climate and ecology of the Great Plains share similarities with the Kenyan savannas, though there are also distinct differences in terms of specific flora and fauna due to geographical separation and varying climate conditions.

A personal career profile form evaluates two sets of data

Answers

Answer: It evaluates personal information and career information.

Explanation:

Answer:

A.  personal information and career information

Explanation:

Thomas gets on an elevator on the 1st floor. He goes up 8 floors. Then he
continues up 2 additional floors. Finally, he goes down 5 floors before leaving
the elevator. On what floor does Thomas get off?
O
A. 2nd floor
O
O
O
B. 16th floor
C. 15th floor
D. 6th floor

Answers

he gets off on D the 6th floor

an object with a mass of 6.0 kg accelerates 4.0 m/s^2 when an unknown force is applied to it. what is the acceleration?

Answers

Answer:

24 N

Explanation:

F=ma

F= 6 × 4 = 24 N

that's it.

2. What is the percent composition of sulfur in H2SO4?
CA. 98.1%
OB. 65.2%
O C.32.7%
D.2.1%

Answers

Answer:

C. 32.7%

Explanation:

% composition = ( mass S / mass H2SO4 ) × 100 = 32.08/ 98.10 × 100 = 32.7 % pls mark brainliest

Which type of element seeks to gain electrons

Answers

Answer:

nonmetals

Explanation:

Non metals when they form ionic compounds to do so by gaining electrons

which cell structure is responsible for taking in and breaking down foreign particles and damaged organelles?

Answers

Answer:

lysosomes

Explanation:

why must you use temperature to specify how hot or cold something is?

Answers

At others time we need to k ow how hot or cold something is when we need to measure temperature correctly we need to use an instrument called a thermometer this measure temperature in degrees Celsius or degrees Fahrenheit

Temperature is crucial as it indicates the average kinetic energy of particles. Thermometers measure temperature using various material properties. Temperature scales allow for precise measurement of how hot objects are.

Temperature is a measure of how hot or cold an object is relative to another object. It is critical to specify how hot or cold something is because temperature indicates the average kinetic energy of the particles in matter, which directly affects various processes like chemical reactions.

Temperature is operationally defined to be what we measure with a thermometer. Thermometers rely on properties of materials like the expansion and contraction of liquid mercury or variation of resistance in wires to provide accurate temperature readings.

Using a temperature scale allows for quantitative measurement of how hot an object is, enabling us to understand changes in thermal energy content and the flow of heat between objects accurately.

How do scientists construct models of atoms and molecules?

Answers

Mr. Roentgen's x-rays allowed scientists to measure the size of the atom. The x-rays were small enough to discern the atomic clouds. This was done by scattering x-rays from atoms and measuring their size just as Rutherford had done earlier by hitting atoms with other nuclei starting with alpha particles.

In nature, hot air tends to rise and cool air tends to sink. This is behind the concept of convection heating that is used in ovens. Convection currents occur only in fluids such as liquids and gases but not in solids.

Which of the examples below is an example of convection?
A) rubbing your hands together.
B) heating a fish tank.
C) basking in the sun.
D) striking a match.

Answers

Answer: Heating a fish tank

Answer:

B

Explanation:

MODES OF HEAT TRANSFER

1) Conduction: This type of heat transfer happens when there is direct contact between the two object.

2) Convection: This type of heat transfer happens when there is a movement of fluid (liquid or gas).

3) Radiation: This type of heat transfer happens when there is direct transfer of energy through space.

A. Rubbing your hands together, is a type of energy transformation in which mechanical energy transforms to heat energy.

B. Heating a fish tank: Hot liquid tends to rise and cool liquid tends to sink and thus the fish tank heats.

C. Basking in the sun: is a type of radiation as the sun energy is transferred through space.

D. Striking a match: is a energy transformation in which mechanical energy transforms to heat and light energy.

please make me brainlist

Match the following.
1. circuit with only one current path
parallel circuit
Watt's law
2. circuit with two or more branches
equation that relates electrical power, current, voltage, and
resistance
3. equation
series circuit

Answers

Answer:

A) The current in a parallel circuit and the voltage in a series circuit

Explanation:

Answer:

1. series circuit

2. parallel circuit

3. Watt's law

Explanation:

hope this helps someone!

On Mars, how much would a 1kg object weigh

Answers

Answer:

Explanation:

On Mars, 1 kilogram would be about 3.5 Newtons. So, on Earth, the person would mass 77 kilograms, but weigh 754.6 Newtons. On Mars, the person would still mass 77 kilograms (because mass does not change with gravity), but weigh 269.5 Newtons.

Answer:

3.5 newtons

Explanation:

The weigh of the earths surface is 9.8 newtons so on mars it would be 3.5 newtons

Question 1
Joseph is conducting an investigation on how two objects compare in mass, volume, and force with each other. When determining the
gravitational force between the two objects, which of the following characteristics of the objects should be considered?
Mass
Volume
State of matter
Shape

Answers

Joseph is conducting an investigation on how two objects compare in mass, volume, and force with each other. When determining the  gravitational force between the two objects, the following characteristics of the objects should be considered :

MASS AND DISTANCE

Explanation:

The gravitational force is a force that attracts any two objects with mass. In fact, every object, including you, is pulling on every other object in the entire universe. This is called Newton's Universal Law of GravitationThe strength of the gravitational force between two objects depends on two factors, mass and distance. The force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.When two objects are gravitational locked, their gravitational force is centered in an area that is not at the center of either object, but at the barycenter of the system. The principle is similar to that of a see-saw.Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet's rotation.

The gravitational force between two objects is determined by their masses and the force of gravity. The volume, state of matter, and shape of objects do not impact gravitational force, as it is the interaction of objects' masses that matter.

When determining the gravitational force between two objects, the characteristics of the objects that should be considered are their mass and the force of gravity that acts upon them. The volume, state of matter, and shape do not directly impact the gravitational force between objects. According to Newton's Law of Universal Gravitation, the force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Essential Knowledge in physics tells us that gravitational force describes the interaction of one object that has mass with another object that has mass. Therefore, it is the total quantity of matter—an object's mass—that influences the gravitational force. In contrast, the volume depends on the size of an object and its shape but does not affect gravity.

In your neighborhood, people are setting up a downhill soapbox derby race. As a safety measure, bales of hay are set up at the bottom of the hill as a barricade to stop cars and drivers. At what point on the car’s path will it have the most kinetic energy? A) at the very top of the hill B) at the midpoint of the hill C) at the very bottom of the hill D) after it collided with the hay

Answers

Answer:

  The answer is C) at the very bottom of the hill because the top of a slope has the most potential energy and as it goes down it is converted to kinetic energy, so at the very bottom there is more kinetic energy.

Explanation:

Since potential energy is most concentrated at the peak of a slope and is transformed into kinetic energy as it descends, there is greater kinetic energy toward the bottom of the hill. Hence, option C is correct.

What is Kinetic energy?

Kinetic energy is a type of power that a particle or an object possesses as a result of its motion. By exerting a net force on an item, work is done, which transfers energy; as a result, the object accelerates and obtains kinetic energy. A moving item or particle's ability to move depends on both its mass and velocity. This is known as kinetic energy. Translation (or movement along the path from one location to another), revolution about there being an axis, vibrations, or any combo of motions are examples of possible types of motion.

A body's squared translational kinetic energy, or 1/2mv², is equivalent to one the product of its mass, m, and its velocity, v.

Therefore, this concludes that option (C) is correct.

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What wave property is shown

Answers

Answer:

The answer is Refraction

Answer:

Refraction.

Explanation:

Refraction is where lighwaves are bent. your eye assumes that the object is where the light ray is coming from when it actually bent to come at your eye from that angle this is why straws appear slightly out of place in water.

(PLEASE HELP) Which of the following is the name for two or more types of atoms that are chemically bonded together?

A. Compound
B. Colloid
C. Element
D. Solvent

Answers

Answer: A

Explanation:

Answer:

A compounds

Explanation:


Visit this website and locate the element chlorine, whose
chemical symbol is Cl. Click on the square to read about
the element.
Why is it important to use caution when handling
chlorine?

Answers

Answer:

Chlorine is a respiratory irritant. The gas irritates the mucus membranes and the liquid burns the skin. As little as 3.5 ppm can be detected as an odor, and 1000 ppm is likely to be fatal after a few deep breaths. In fact, chlorine was used as a war gas in 1915.

Explanation:

Final answer:

Chlorine, with the chemical symbol Cl, should be handled with caution because it can be harmful. Chlorine gas can cause respiratory problems if inhaled, while liquid chlorine can cause skin and eye burns. It can also react to form more hazardous substances.

Explanation:

Chlorine, represented by the chemical symbol Cl, is an element often found in various compounds and used for a broad range of applications, including water treatment and disinfection in pools. However, it's important to handle chlorine with caution because it can be harmful to human health.

As a gas, chlorine is severely irritating and dangerous, causing issues with respiratory function if inhaled. Its liquid form can cause burns on the skin and eyes. Furthermore, chlorine can react with other chemicals, which might lead to the formation of substances more hazardous than the original chlorine.

This is why proper training, correct handling techniques, and safety measures should always be implemented when dealing with chlorine to minimize risks

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Which of the following types of electromagnetic radiation has the longest wavelength?

Answers

Answer:

Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.

Answer:

radio waves

Explanation:

The buoyant force on an object is dependent on _____.
a. the shape of the object
b. the volume of the object
c. the mass of the object
d. the object’s density

PLEASE ANSWER ASAP THANKS!!

Answers

Answer:

d. The objects density

Explanation:

Density is the measure of how much an an object will sink or float in liquid or gas. The density of the liquid or gas is also a factor in how much the object will sink or float.

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