All categories

3 years ago

Work is being done in which of these situations? All motions are at a constant velocity (including velocity = zero).

Chemistry

2 answers:

tigry1 [53]3 years ago

5 0

Answer:

None of the above

Explanation:

Work is defined as the force that moves an object through a particular distance:

Workdone = force x displacement

At constant velocity, the force on a body is zero because such a body is not accelerating.

Force is a product of mass and acceleration. Acceleration occurs only when velocity changes with time. If no change in velocity, acceleration does not occur. Therefore, no force is being applied.

From all the situations given, the condition is set at constant velocity. At constant velocity, there is no acceleration. This implies that no work is done.

riadik2000 [5.3K]3 years ago

3 0

the answer is A.) Jessica pushes a 25 kilogram cart a distance of 10 meters. for plato users :)

You might be interested in

PLEASE HELP!!!!!!!!

olga_2 [115]

Answer:

Hey student your question is not proper arrange, i don't understand what you want us to do

5 0

3 years ago

What are the [H₃O⁺] and the pH of a buffer that consists of 0.20 M HF and 0.25 M KF (Kₐ of HF = 6.8X10⁻⁴)?

Charra [1.4K]

The pH of 0.20 M HF (Hydrofluoric acid) is 3.27. Whereas, [H₃O⁺] for the same is 6.8 X10 ⁻⁴

<h3>What is Hydrofluoric acid?</h3>

A hydrogen fluoride and water solution is hydrofluoric acid. HF solutions are colorless, corrosive, and acidic. The majority of fluorine-containing chemicals are made using it; examples include the substance PTFE and the widely used psychiatric drug fluoxetine. Aluminum, plastics, electrical components, pharmaceuticals, high-octane fuel, fluorescent light bulbs, and refrigerants are all made with hydrogen fluoride. The production of refrigerants uses 60% of the hydrogen fluoride used in manufacturing. corrosive due to the acid's H+ ions and poisonous due to the fluoride ions F-, which can penetrate deeply, chelate calcium and magnesium, and thus upset biological balances due to the destruction of the skin's or an eye's outermost layer.

To learn more about Hydrofluoric acid, visit:

brainly.com/question/24194581

#SPJ4

5 0

2 years ago

How does the corona of the Sun affect earth

SIZIF [17.4K]

Answer:

I don't think it does affect Earth

Explanation:

The sun is too far away to get corona let alone spread it.

6 0

3 years ago

Read 2 more answers

Horticulturists know that, for many plants, dark green leaves are associated with low light levels and pale green with high leve

nikitadnepr [17]

In the reduction process of photosynthesis, electrons are transported from water to carbon dioxide.

According to photon theory here the photons behave as light energy particle.
By capturing sun energy (photons), chlorophyll aids in this process.An electron in the chlorophyll molecule gets excited from a lower to a higher energy state when chlorophyll receives energy from sunlight.

Excessive sunshine is the main cause of leaves turning a darker green color. Lack of sunlight causes a plant's leaves to create more chlorophyll, which is what gives the plant its green hue.

The color of the leaf is darker green than typical because of the increase in chlorophyll concentration per unit area.

<h3>What is photon theory?</h3>

The photon theory of light states that photons have simultaneous particle and wave behavior. pass through empty space at a constant speed, or "the speed of light". possess rest energy and zero mass.

Learn more about photon theory here:

brainly.com/question/3479307

#SPJ4

7 0

2 years ago

What is the molarity of a 0.250 L MgCl2 solution that contains 0.175 mol MgCl2?

spayn [35]

Explanation:

we know that 0.250 L = 0.250 dm3

molarity = concentration in dm3/ volume

molarity = 0.175/0.250 = 0.7 mol/dm3

4 0

3 years ago