For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration

Answer: D

Explanation:

First, we know that the acceleration is defined as the ratio of change of the velocity.

This means that, if we have a change in the velocity, then we also have acceleration.

And by Newton's second law we know that:

F = m*a

Force equals mass times acceleration.

So if we have acceleration different than zero, then we should also have force different than zero.

So we must have a nonzero net force acting on it.

The correct option is D

Hello!

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The statement in which correctly applies to a car that changes its velocity over a period of time would be "a nonzero new force is acting on it."

Hope this helps! Also, if you need help with the rest of this assignment, I make a study set on Quizlet that may help you out with the other question. Thanks and good luck!

Quizlet - Unit 6: Lesson 3 Newton's Second Law

h t t p s : / / q u i z l e t . c o m / 7 3 7 7 7 5 3 2 0 / u n i t - 6 - l e s s o n - 3 - n e w t o n s - s e c o n d - l a w - f l a s h - c a r d s / ? n e w

169 Kcalories are provided by a portion of food that has 25 grams of carbs, 6 grams of protein, and 5 grams of fat.

Kcalories mean kilo-calories. Basically, kilo-calorie or kcal refers to 1,000 calories. To get the Kcalories of food, you have to add the kcal of carbohydrates, protein, and fat.

Get the product by multiplying the number of grams of carbohydrate, protein, and fat by 4,4, and 9, respectively. So if you want to get the energy or Kcal available from a meal, you must then combine the outcomes.

Simply put it, take note of the following conversions:

So here's how to compute the Kcalories of food that contains 25g carbs, 6g protein, and 5g fat.

1.    25g x 4kcal/g = 100kcal

2.    6g x 4kcal/g = 24kcal

3.    5g x 9kcal/g = 45kcal

4.    100kcal + 24kcal + 45kcal = 169kcal!


Therefore, the food contains 169 kilo-calories!

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The capacitance of a parallel plate capacitor is 4.8 μF when charged with a potential difference of 1.25 V and a charge of 6.0 μC. In this calculation, the units are consistent.

The capacitance of a parallel plate capacitor can be calculated using the formula C = Q/V, where C is the capacitance, Q is the charge, and V is the potential difference. In this case, the charge is given as 6.0 μC and the potential difference is 1.25 V.

Substituting the given values into the formula, we have C = (6.0 μC) / (1.25 V). To simplify the units, we convert microcoulombs to coulombs by dividing by 10⁶, which gives C = (6.0 × 10⁻⁶ C) / (1.25 V).

Evaluating the expression, we find C = 4.8 × 10⁻⁶ F. Therefore, the capacitance of the parallel plate capacitor is 4.8 microfarads.

It is important to note that in this calculation, the units are consistent. The charge is in coulombs, the potential difference is in volts, and the capacitance is in farads.

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Answer:here you goo

Explanation:

A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. ... A rock is an aggregate of one or more minerals, or a body of undifferentiated mineral matter.

Answer:

Minerals are naturally occuring solid while rocks are naturally occuring substances consist of aggregate minerals clumped together with other materials

The incorrect option about the student's claim is option B which is his

claim about alternating current being correct.

This is the type of electron flow which involves a periodic reversal in

direction and changes in magnitude in the circuit.

In a circiuit electrons from the negative terminal to the positive one and

his claim mis correct about direct current which makes his claim wrong.

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The correct answer is d. 30 ft3. Office spaces should provide at least 30 ft3 per minute per occupant of clean outside air at minimum where smoking is not prohibited.

Office space should provide at least 20 ft3 per minute per occupant of clean outside air at minimum where smoking is not prohibited. The correct answer is c. 20 ft3.

Smoking bans or smoke-free laws are public policies that prohibit smoking in certain areas, including laws and safety practices, work, and health. However, the law will also prohibit smoking in open areas such as parks, beaches, pedestrian squares, universities, and hospitals, away from the patient, home entrances, and sometimes in private vehicles and many apartments.

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When the output does not meet the equilibrium quantity in a market, a situation known as disequilibrium occurs. Disequilibrium refers to a state where there is an imbalance between the quantity demanded and the quantity supplied of a particular good or service. In this situation, two possibilities can arise: Excess Demand and Excess Supply.

Excess Demand: If the quantity demanded exceeds the quantity supplied, it creates a situation of excess demand or a shortage. Consumers are willing to purchase more of the product at the prevailing price than what is available in the market. This can lead to increased competition among consumers, rising prices, and a potential loss of potential sales for suppliers.

Excess Supply: On the other hand, if the quantity supplied exceeds the quantity demanded, it creates a situation of excess supply or surplus. Suppliers are producing more of the product than what consumers are willing to purchase at the prevailing price. This can lead to price reductions, decreased profitability for suppliers, and a buildup of unsold inventory.

In either case, the market is not in equilibrium, and there is a discrepancy between the quantity demanded and the quantity supplied. In response to disequilibrium, market forces such as price adjustments, changes in consumer behavior, or shifts in production levels may occur in an attempt to restore equilibrium.

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Answer:

Preoperational

Explanation:

According to Piaget's theory of cognitive development, the preoperational stage is the second stage. This stage includes children between the age group of 2 to 7 years. Children can understand conservation tasks and learn to manipulate various symbols during this stage.

So, the answer is the preoperational stage.

Answer:

B Preoperational

Explanation:

This is the answer the person above is correct!

This is for edge 2021/2022

Hope this helps!!

Answer:

no.

Explanation:

A sequence diagram is a type of UML (Unified Modeling Language) diagram that shows the interactions between objects or components of a system as they occur in a chronological sequence.

It is a graphical representation of the interactions that take place between objects or components of a system, depicting the order of messages that are exchanged between them.

Sequence diagrams are used to visualize the flow of a system's functionality, as well as the communication and collaboration between the various components of the system. They are especially useful in understanding complex systems and identifying areas that may require improvement or optimization. Sequence diagrams are also often used to document and communicate the design of a system to stakeholders or development teams.

In summary, a sequence diagram shows the timing of interactions between objects or components of a system as they occur. It is a valuable tool in understanding and communicating the behavior and functionality of complex systems.

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Copernicus's model of the universe differs from Ptolemy's because Copernicus believed the Sun is at the center of the universe and majority of the bodies in the universe revolves around the Sun.

The universe is defined as the open place that contains the planets, stars, galaxies, and all other forms of matter and energy.

There are different models of the universe including which contains the Copernicus's model and Ptolemy's model.

The Copernicus's model of the universe differs from Ptolemy's because Copernicus believed the Sun is at the center of the universe and majority of the bodies in the universe revolves around the Sun.

While the Ptolemy's model of the universe differs from the Copernicus's model because Ptolemy believed that the Earth is at the center of the universe and everything in the universe revolves around the Earth.

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Answer:

589.3 g is the answer

Explanation:

Answer:

The answer for this would be 589.3g

Answer:

To determine the normal strain of the element with orientation θs = 31.3∘, we can use the formula:

ϵx′′ = εx cos²θs + εy sin²θs + γxy sin2θs

where εx is the strain in the x-direction, εy is the strain in the y-direction, and γxy is the shear strain.

Since we are only interested in the normal strain, we can ignore the shear strain and simplify the formula to:

ϵx′′ = εx cos²θs + εy sin²θs

We can also assume that the element is in a state of uniaxial stress, which means that there is no strain in the y-direction (i.e., εy = 0). Therefore, the formula becomes:

ϵx′′ = εx cos²θs

Substituting the given value of θs = 31.3∘, we get:

ϵx′′ = εx cos²31.3∘

We need more information to determine the strain εx.

The normal strain ϵx′′ of the element with orientation θs = 31.3∘, is ϵ × [1 + sin²(31.3∘)/2].

To determine the normal strain ϵx′′ of the element with orientation θs = 31.3∘ , we first need to know the strain in the x direction, which is given by ϵx = ϵcos²(θs) + ϵsin²(θs)/2. Plugging in the given value of θs, we get:

ϵx = ϵcos²(31.3∘) + ϵsin²(31.3∘)/2

Next, we can use the fact that normal strain is defined as the change in length divided by the original length, or ϵx′′ = ΔLx/Lx. We can express ΔLx in terms of ϵx and the original length Lx as:

ΔLx = ϵx × Lx

So, substituting the expression for ϵx that we found above, we get:

ΔLx = [ϵcos²(31.3∘) + ϵsin²(31.3∘)/2] × Lx

Simplifying, we get:

ΔLx = ϵ × [cos²(31.3∘) + sin²(31.3∘)/2] × Lx

ΔLx = ϵ × [1 + sin²(31.3∘)/2]× Lx

Finally, we can substitute this expression for ΔLx into the definition of normal strain to get:

ϵx′′ = ΔLx/Lx = ϵ × [1 + sin²(31.3∘)/2]

Therefore, the normal strain ϵx′′ of the element with orientation θs = 31.3 ∘ is given by ϵx′′ = ϵ × [1 + sin²(31.3∘)/2].

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When a wool sock is dragged across a rug, there is a buildup of static electricity on the wool sock. The type of particle transferred between the rug and the sock to cause this static is an electron.

Static electricity is the electrical charges generated by electric charges that are not moving. In an electrically neutral atom or molecule, electrons and protons exist in equal numbers. A loss or gain of electrons results in a net electrical charge, and static electricity is generated when there is a charge buildup in an insulator.

The generation of electric charge depends on the nature of the materials, their humidity, and their temperatures. Rubber, plastic, and silk, for example, are excellent insulators that accumulate static electricity. Static electricity may result from the rubbing of insulators together or from an imbalance in the transfer of electrons between insulators. Electrons are transferred from the rug to the wool sock when a wool sock is dragged across a rug.

As a result, the wool sock has a static electrical charge.

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The height of the cliff is 40.7m

a ) Considering the motion of the stone ,

\(v_{i}\) = initial velocity

   = 0 m/s

g = acceleration due to gravity

  = 9.8 m/s²

t = time taken to hit the water below

h = vertical height of the cliff

Applying equation of kinematics,

          \(h = v_{i}t + 0.5gt^{2}\\\\h = 0 (t) +0.5(9.8)t^{2}\\\\h = 0 +4.9t^{2} \\\\h = 4.9t^{2} \\\\t = \sqrt{\frac{h}{4.9}} ---(1)\)

b ) Considering  the motion of sound from water ,

\(v_{s}\) = Speed of sound

   = 343 m/s

\(t^{'}\) = time of travel for sound

Applying the values in the following equation,

\(h = v_{s}t^{'}\\\\ h = 343t^{'}\\\\t^{'}=\frac{h}{343} --- (2)\)

The total time = 3

 \(t +t^{'}\)   = 3

Applying (1) and (2),

\(\sqrt{\frac{h}{4.9}} +\frac{h}{343} = 3\\\\h = 40.7 m\)

The height of the cliff is 40.7m

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Answer:

Cornhole

Explanation:

Answer:

The electrical energy consumed in boiling the water is 0.0788 kWh

Explanation:

Given;

mass of the water, m = 600 g = 0.6 kg

power rating of the kettle, P = 1500 W = 1.5 kW

specific heat capacity of water, c = 4,200 J/kg⁰C

density of water, = 1000 kg/m³

time taken to boil the water, t = 3 mins + 9 s = (3 x 60s) + 9 s = 180 s + 9 s = 189 s = \(189 \ s \times \frac{1 hr}{3.600 \ s} = 0.0525 \ hr\)

The electrical energy consumed in boiling the water is calculated as;

E = P x t

E = 1.5 kW  x 0.0525 hr

E = 0.0788 kWh

Therefore, the electrical energy consumed in boiling the water is 0.0788 kWh

Answer:

Gravitational fields are determined only by the mass ( or mass-energy) of a body. ... magnetic fields are produced by charged particles in motion, and depend on the charge and velocity of these particles, but not on their mass. Magnetic fields are 'polar' fields with a North and South polarity.

Explanation:

Answer: Special Software

Explanation:

It's the only reasonable answer since B and D don't make sense. Also, a Xerox machine is used for duplicating images and documents.

Cameron likely uses special software help her check for fakery in photography. Hence, option (A) is correct.

Software is a collection of computer programs along with supporting files and information. Hardware, on the other hand, is what the system is made of and what actually does the work.

Executable code is the lowest level of programming and is made up of machine language instructions that are supported by a single processor, usually a central processing unit (CPU) or a graphics processing unit (GPU). Machine language is made up of collections of binary values that represent processor instructions that alter the previous state of the machine.

Hence, Cameron likely uses special software help her check for fakery in photography. Hence, option (A) is correct.

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The energy required to heat 40.7 g of water (H2O) from -10°C to 70°C can be calculated as follows;Mass of water = 40.7 gTemperature change = 70 - (-10) = 80 °C Specific heat of ice = 2.06 J/g °CSpecific heat of water = 4.18 J/g °CHeat of fusion of water = 334 J/gAt first, we have to heat the ice from -10°C to 0°C using the formula;

q = mcΔTwhere m is the mass, c is the specific heat, and ΔT is the temperature change. For ice, c = 2.06 J/g °C, and the temperature change is 0 - (-10) = 10°C;

q1 = (40.7 g)(2.06 J/g °C)(10°C) = 839.42 J

This amount of heat energy is needed to bring the ice to its melting point. The amount of heat required to melt the ice at 0°C can be determined using the formula; q2 = mLfwhere Lf is the heat of fusion of ice, which is 334 J/g;

q2 = (40.7 g)(334 J/g) = 13590.8 J

Now, we have 40.7 g of water at 0°C.

To heat this water to 70°C, we use the formula;

q3 = mcΔT

where m is the mass, c is the specific heat, and ΔT is the temperature change. For water, c = 4.18 J/g °C, and the temperature change is 70 - 0 = 70°C;

q3 = (40.7 g)(4.18 J/g °C)(70°C) = 12123.94 J

The total energy required is;

\(q_total = q1 + q2 + q3 = 839.42 J + 13590.8 J + 12123.94 J = 26554.16 J\)

Thus, the energy required to heat 40.7 g of water (H2O) from −10∘C to \(70∘C is 2.66 x 10^4 J or 26.6 kJ\).

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Answer:

Masseter

The masseter runs from the temporal bone (that forms part of the sides and base of the skull) to the lower jaw (the mandible). It lifts the lower jaw, to close the mouth. The masseter is the strongest muscle in your body.

Temporalis

The temporalis begins on two bones of the skull, at the front (the frontal) and at the side and base (the temporal). It runs to the top of the lower jaw (the mandible). Like the masseter, the temporalis helps close the mouth.

Deltoid

The deltoids are the triangular muscles of the shoulder. The strongest point is the central section, which raises the arm sideways. The front and back parts of the muscle twist the arm. Deltoid comes from the Greek word deltoeides, meaning shaped like a (river) delta, which is triangular.

Pectoralis major

(The pecs!) The pectoralis major is a large, fan-shaped muscle. It covers much of the front upper chest, beginning at the breastbone (or sternum) including the second to the sixth ribs.

Adductor Longus

The adductor longus is located on the inner thigh. Adduct means move, so this muscle allows the thigh bone (the femur) to move inward and to the side.

Soleus

Located in the lower leg, the soleus runs from the lower leg bones (the tibia and fibula) to the heel (the calcaneus). The soleus muscle flexes the foot by moving the foot at the ankle. It also helps circulation by pumping blood back up towards the head.

Biceps brachii

The biceps brachii runs from the shoulder to the elbow. It is attached to the shoulder blade (the scapula), and extends along the front surface of the upper arm bone (the humerus). When the bicep contracts, the arm bends at the elbow. Notice that humerus sounds like humour – we call this area of the elbow the funny bone.

The Buccinator

The buccinator muscle compresses the cheek. This muscle allows you to whistle, blow, and suck; and it contributes to the action of chewing.

The Suprahyoid

The suprahyoid muscles raise the hyoid bone, the floor of the mouth, and the larynx during deglutition.

The Splenius

The splenius muscles originate at the midline and run laterally and superiorly to their insertions. From the sides and the back of the neck, the splenius capitis inserts onto the head region, and the splenius cervicis extends onto the cervical region. These muscles can extend the head, laterally flex it, and rotate it.

The function of transformers in power transmission lines is to step up or step down the voltage of electrical energy being transmitted.

High voltage transmission lines use high voltages to minimize energy loss due to heat during transmission. However, this high voltage is not suitable for use in homes and businesses. Therefore, transformers are used to reduce the voltage to a safer and more manageable level for consumers. A transformer consists of two coils of wire wound around a common core.

When an alternating current flows through the primary coil, it generates a magnetic field, which induces a current in the secondary coil. By varying the number of turns in the primary and secondary coils, the transformer can step up or step down the voltage of the electrical energy being transmitted. In summary, transformers play a critical role in enabling efficient and safe transmission of electrical energy from high voltage supply lines to consumers.

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--The complete question is, What is the function of transformers in power transmission lines between high voltage supply lines and consumers, such as households or homes?--

A substance that conducts electricity without resistance is called a superconductor, exhibiting zero resistance and lossless current flow at low temperatures.

A superconductor is a material that can conduct electric current without any resistance or energy loss. When a superconductor is cooled below a certain temperature, called the critical temperature or critical transition temperature, it undergoes a phase transition and enters a state known as superconductivity.

In the superconducting state, electrons can flow through the material with zero resistance, resulting in the absence of energy dissipation. This unique property of superconductors allows for the efficient transmission of electrical current and has various practical applications, such as in magnetic resonance imaging (MRI) machines, particle accelerators, and power grid systems.

The phenomenon of superconductivity is governed by quantum mechanical effects and is explained by the formation of Cooper pairs, which are pairs of electrons that are bound together at low temperatures. These Cooper pairs experience no scattering from impurities or lattice vibrations, leading to the lossless flow of current.

However, it's important to note that superconductivity is temperature-dependent, and most superconductors require extremely low temperatures to exhibit their zero-resistance behavior. Advances in research have led to the discovery of high-temperature superconductors that operate at relatively higher temperatures, but they still require cryogenic conditions.

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Answer:

none

Explanation:

none cause it's in space

An electron’s position cannot be known precisely. only its probability of being in a certain location can be known as c.  the electron cloud model.

Electron cloud model was developed in the 1920s by Erwin Schrödinger and Werner Heisenberg, and it is based on the idea that an electron does not have a definite location, but rather exists in a probability distribution around the nucleus of an atom.

In the electron cloud model, the probability of finding an electron in a certain location is represented by a cloud-like shape around the nucleus. The denser the cloud, the greater the probability of finding an electron in that area. This model is different from the Bohr model, which depicts electrons as orbiting the nucleus in fixed, circular paths. The electron cloud model is also different from Einstein's model, which does not specifically address the position of electrons.

In summary, the electron cloud model is the model that describes an electron's position as a probability rather than a precise location. It is different from the Bohr model and Einstein's model, and it is based on the idea that an electron exists in a probability distribution around the nucleus of an atom.

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Answer:

the electron cloud model.

Explanation:

Answer:

Elasticity

Elasticity is the ability of rubber, for example to return to it's natural shape after being bent and forced in different directions.

Answer:

Elasticity

Explanation:

just gooooooooogle search it

This principle is based on the observation that in undisturbed sedimentary rock formations, the oldest layers are at the bottom and the youngest layers are at the top.

What is Fossils Fuels?

Fossil fuels are a group of non-renewable energy sources that are formed from the remains of dead plants and animals that lived millions of years ago. Fossil fuels include coal, oil, and natural gas, and are used to generate electricity, power transportation, and heat buildings.

Coal is formed from the remains of plants that lived in swampy environments millions of years ago. Over time, these plants were buried and subjected to high pressure and temperature, which converted them into coal. Coal is primarily used to generate electricity in power plants.

The law of superposition is a basic principle of geology that states that in a sequence of sedimentary rock layers, each layer is younger than the one beneath it and older than the one above it.

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