Explain why the phrase "by ordinary means" was added to the Law of Conservation of Energy

➷ This is a true statement. The Mediterranean diet often replaces things such as butter with olive oil.

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True. Olives and olive oil are staples foods in the Mediterranean diet. I Mediterranean and i can guarantee you it 100%.

Metals - The close packing of the metal ions in the lattice and the delocalised electrons ensure it can carry kinetic energy through the lattice.

Non - metals have fewer free electrons and electrons are held tightly, meaning they're not allowed to move freely.

Final answer:

Metals are good electrical conductors due to their free electrons that allow for easy flow of charge, while non-metals are poor conductors as their electrons are more tightly bound. This electron structure difference makes metals suitable for electrical wiring and non-metals for insulation.

Explanation:

Metals are generally good conductors of electricity because they have free electrons that can move easily between atoms, providing a path for electrical charge to flow. This is why metals like copper and gold are commonly used in electrical conducting wires. On the other hand, non-metals are typically poor conductors of electricity, as their electrons are more tightly bound to their atoms and do not move freely. Materials like plastic, wood, and glass are examples of non-conductors or insulators. Therefore, the fundamental distinction between metals and non-metals in terms of conductivity is based on how their electrons are structured and interact.

Properties of Metals and Nonmetals

Metals have a shiny lustre, are malleable and ductile, making them ideal for making jewellery and cooking utensils.

Non-metals, such as sulfur and oxygen, are neither malleable nor ductile, and they usually do not conduct heat and electricity well.

Moving beyond electrical conductivity, materials can also be classified by magnetism, thermal conductivity, and other properties, emphasizing the versatility and range of uses for different elements based on their conducting abilities.

The resistance between the two sides of an outlet should be infinite. The two sides of the outlet are not connected to one another in any fashion as they are two sides of a circuit. The diagram below shows how this works. In an AC circuit, as shown below, the black wire provides AC power, the white is common, and the green is ground. Back in your breaker box, the common wires all go to one buss bar that is to earth ground and the ground wires go to earth ground as well by a separate path making sure that the residual voltage on the common doesn't cross over to the ground wire of another circuit. In the right hand diagram, they show how to connect wires for a series (daisy chain) to another outlet.

So my question is why are you trying to measure resistance here? Normally we would measure voltage. Are you trying to diagnose a circuit problem? In a 110vac system you should have 110vac from black to white and black to green and none from white to green (ideally if nothing is plugged into any outlets). With the breaker off, you should be able to measure the resistance between the two posts on the black side, and that should be 0ohms as they are the same point.

Current = (voltage) / (resistance)

Current = (240 V) / (12 ohms)

Current = 20 Amperes

Informal and formal learning both require effort and are significance. Neither is better than the other. So the answer is "One is more structured than the other."

Answer:False

Explanation:

False

Only the shape of the juice will change (C), because liquids take the shape of any container you pour them into.

Pouring the juice from the bottle into the glass doesn't change its mass, stat, or volume.  So why should pouring it from the glass onto the floor change any of those things ?

When Ashlee spills the orange juice on the floor, the characteristic that changes is the volume of the juice.

The characteristic of the juice that will change when it spills all over the floor is its volume. When the glass breaks, causing the juice to spill, the volume of the juice will no longer be contained within the glass.

The question is really specific enough, but I will take a guess. If nothing else changes (like the mass or the gravitational constant) then the Potential Energy  will increase with an increase in height. Ep will decrease with a decrease in height.

If you are talking about Ke, then the height does not matter unless the object is moving up. Then it slows down. When that happens the Ke decreases because the formula for Ke = 1/2 m v^2.   If v becomes less then Ke becomes less.

I suppose you could say if the object is going down and the distance is decreasing then the speed will increase. It's an inverse relationship.

I think you are best talking about Pe.

Answer: single replacement

Explanation: THIS IS THE RIGHT ANSWER I DID IT ON USA TEST PREP

This question pertains to a chemical reaction, represented by a chemical equation. These reactions are divided into categories such as precipitation, acid-base, and oxidation-reduction based on their behavioural patterns and can be presented through balanced chemical equations.

The question refers to a type of chemical reaction. In chemistry, reactions are categorized based on patterns of behavior. Three main categories of reactions include: precipitation, acid-base, and oxidation-reduction (redox). These reactions can be symbolized by chemical equations, using formulas of substances that change (reactants) and are generated by the change (products). Each substance is separated by an arrow and preceded by integer coefficients to indicate their relative numbers. When the coefficients result in equal numbers of atoms for each element in the reactants and products, the equation is balanced.

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a. Sweet corn and possibly d. okra.

Spinach is the crop least likely to do well in very hot temperatures due to its preference for cooler temperatures and increased likelihood of bolt when exposed to high heat.

The crop that is least likely to do well when the temperatures are very hot is spinach.

Spinach is a cool-season vegetable that prefers temperatures between 35 and 75 degrees Fahrenheit. When exposed to high temperatures, spinach is more prone to bolting, which means it quickly produces flowers and seeds instead of growing leaves. This affects the flavor and texture of the spinach, making it less desirable.

Sweet corn, tomatoes, and okra, on the other hand, are warm-season crops that are better adapted to hot temperatures and can tolerate higher heat without significant negative effects.

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Non-market distribution method

non-market distribution methods, hope this helps. Have a good day.

A.

Waves can transfer energy but they can’t transfer matter

Tue statement that is false about waves is that waves can transfer energy to matter. That is option D.

A wave is defined as a disturbance in a medium that carries energy without a net movement of particles.

The main properties of a wave include the following:

The above properties possessed by waves makes it possible for it to be able to transfer an object, change its direction and interact with each other but not to transfer energy to matter.

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Potential difference is measured using a device called a voltmeter . Just like ammeters, some types have a pointer on a dial, but most have a digital display. However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.

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It is just simply called a Voltmeter, and it reads potential differences.

Answer:

RESISTANCE

Explanation:

Answer:

Resistance

Explanation:

In a circuit, voltage source (cell or battery), key (for closing and opening circuit), resistance and a conducting wire are main components. Ohm's law states that current flowing in the circuit is proportional to the potential difference across the two ends.

V = I R

Where R is the resistance. Current also depends on the resistance. Greater resistance means lesser current would flow.

A light bulb and toaster represent resistance. These devices are based on Joule's Heating. When current passes through a resistance, it heats up and energy is lost as heat in case of toaster and as heat and light in case of light bulbs.

They all have the same number of electrons in the electron cloud.

Answer:

51.9 m/s, horizontal

Explanation:

The horizontal and vertical components of the initial velocity of the projectile are given by:

[tex]v_x = v cos \theta=(65.0 m/s)(cos 37^{\circ})=51.9 m/s\\v_y = v sin \theta=(65.0 m/s)(sin 37^{\circ})=39.1 m/s[/tex]

In a projectile motion, the horizontal component of the velocity does not change (because there are no forces acting in the horizontal direction), while the vertical velocity changes according to:

[tex]v_y(t)=v_{0y}-gt[/tex]

where g=9.8 m/s^2 is the acceleration due to gravity. However, at the point of maximum height, the vertical velocity is zero (because it is the point at which the projectile starts falling down), so the magnitude of the resultant velocity will simply be equal to the horizontal component:

v = 51.9 m/s

and the direction will be horizontal.

The magnitude of the velocity at the maximum height is 52.0 m/s and the direction is horizontal.

To determine the magnitude and direction of the velocity at the maximum height of a projectile, we need to analyze its motion. At the maximum height, the vertical component of the velocity becomes zero, while the horizontal component remains constant. Since the initial velocity is given as 65.0 m/s at an angle of 37º above the horizontal, we can use trigonometry to determine the horizontal and vertical components of the velocity.

The horizontal component of the initial velocity can be calculated as: Vx = initial velocity * cos(angle) = 65.0 m/s * cos(37º) = 52.0 m/s

At the maximum height, the vertical component of the velocity is zero. We can calculate the vertical component of the initial velocity as: Vy = initial velocity * sin(angle) = 65.0 m/s * sin(37º) = 39.0 m/s

Therefore, at the maximum height, the magnitude of the velocity is 52.0 m/s and the direction is horizontal or along the x-axis.

Here is your answer

D. III only

REASON:

1) The degree of curveness at the poles is maximum.

2) The density of field lines at and near poles is maximum.

Thus, magnetic field strength is maximum at the magnetic poles.

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4 m/s²

When both forces point due east  then;

the resultant force will be; 10 + 30 = 40 N due east

But; From second Newton's law of motion;

F = ma

Thus;

a = F/m ; F= 40 N and mass = 10 kg

  = 40/ 10

  = 4 m/s² to wards east

1 m/s²

when 10 N force points due east and 30 N force points due west then;

the resultant force will be; 30 N - 10 N = 10 N due west

But; From second Newton's law of motion;

F = ma

Thus;

a = F/m

   = 10 /10

   = 1 m/s² , towards the west direction

Explanation:

Given that,

First force = 10 N

Second force = 30 N

Mass of box = 10 kg

(1). When both forces point due east

Then the net force will be

[tex]F_{net}=F_{1}+F_{2}[/tex]

[tex]F_{net}=10+30[/tex]

[tex]F=40 N[/tex]

We need to calculate the acceleration

Using newton's second law

[tex]F= ma[/tex]

put the value into the formula

[tex]40=10\times a[/tex]

[tex]a=\dfrac{40}{10}[/tex]

[tex]a=4\ m/s^2[/tex]

The box accelerate towards east.

(2). When 10 N force points due east and 30 N force points due west.

Then the net force will be

[tex]F_{net}=F_{2}-f_{1}[/tex]

[tex]F_{net}=30-10=20\ N[/tex]

We need to calculate the acceleration

Using newton's second law

[tex]F= ma[/tex]

[tex]20=10\times a[/tex]

[tex]a=\dfrac{20}{10}[/tex]

[tex]a=2\ m/s^2[/tex]

The box accelerate towards west.

Hence, This is the required solution.

The answer would be:

X convex mirror

Y concave mirror

Here's more about it:

Convex mirrors are used in side mirrors in cars because it has a wider field of view than others. This is because convex mirrors bend the light it reflects. The more it bends the light. The further the object is from the mirror, the image that will be produced will be smaller. That's why the side mirrors usually say that objects are closer than they appear.

A concave lens on the other hand, reflect light inwards, away from the light source. That's why they are used in telescopes, ,because they are used to collect light. The images that concave mirrors produces are enlarged.  

C stands for carbon. The O stands for oxygen. CO2 is one carbon atom and two oxygen atoms

begin with vibrations of the eardrum. Sound waves cause the eardrum to vibrate. Cells in the cochlea detect the vibrations and send a message to the brain.

Answer:

Sound must have a means by which it can be transported, for example air. That is why there is no sound in space.

The way our brain perceives sound is through the ears. The tympanum that the human being has is connected to three bones and when the air vibrates, the tympanum also vibrates, causing these vibrations to pass through those bones towards the inner part of the ears and from there to our brain.

That is the way the brain perceives sound.

B) Velocity

The spring's displacement determines the amplitude. Maximum displacement therefore means maximum amplitude.

Answer:

When a mass on a spring is at maximum displacement, velocity is at a minimum.

(b on edge)

The term that describes the number of thoughs that pass a point in a given amount of time is FREQUENCY.

In wave theory, frequency refers to the number of wave that pass through a fixed point in a given amount of time. Frequency is usually measure in Hertz. The mathematical formula for finding frequency is:

F = Velocity of wave / wavelength of wave.

B is a speed.

A is an acceleration.

C and D are velocities.

The example of speed, with the unit as m/s (meter per second) in the following options is, option B. The option B has speed of 2 meter per second.

Speed of an body is the distance traveled by it with respect to time. Speed of a object is the ratio of total distance traveled by the object to the time taken by it. It can be given as,

[tex]s=\dfrac{x}{t}[/tex]

Here, (x) is the distance traveled by a body and (t) is the time taken by it.

As the distance is measured in the meters and time is measured in the second. Thus the speed of an object is measured in meter per second (m/s).

When the distance travelled by an object with respect to time is represented with its direction, then it is called the velocity of the object in that direction.

The rate of change of velocity is called the acceleration. It is represented in the meter per squared second (m/s²).

In the given option,

The example of speed, with the unit as m/s (meter per second) in the following options is, option B. The option B has speed of 2 meter per second.

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I don’t really really know

Weight is a  unit of force.

Newtons measure force.

5 kg is a mass and is in kg. Kg and mass are independent of location. 5 kg is 5 kg on the moon, here on earth, on Jupiter and on Mars or anywhere else you care to name.

F = m*a

F = 5 * 9.81

F = 49.05 Newtons. This is how things should be weighed on planet earth.

They become charged particles called ions.

A. Sacral is the answer.

Sacral is the vertebrae are normally fused together to form a solid mass of bone.

Vertebrae exist the 33 individual, interlocking bones that form the spinal column. Each vertebra has three primary functional components: the vertebral body for load-bearing, the vertebral arch to rescue the spinal cord, and transverse processes for ligament attachment.

Sacral is the vertebrae are normally fused together to form a solid mass of bone.

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First, we have to establish the reference system. Let's assume that the building is on the negative y-axis and that the brick was thrown at the origin (see figure attached).

According to this, the initial velocity [tex]V_{o}[/tex] has two components, because the brick was thrown at an angle [tex]\alpha=61\º[/tex]:

[tex]V_{ox}=V_{o}cos\alpha[/tex]   (1)

[tex]V_{ox}=8.6\frac{m}{s}cos(61\º)=4.169\frac{m}{s}[/tex]  (2)

[tex]V_{oy}=V_{o}sin\alpha[/tex]   (3)

[tex]V_{oy}=8.6\frac{m}{s}sin(61\º)=7.521\frac{m}{s}[/tex]   (4)

As this is a projectile motion, we have two principal equations related:

[tex]X=V_{ox}.t[/tex]  (5)

Where:

[tex]X=10.1m[/tex] is the distance where the brick landed

[tex]t[/tex] is the time in seconds

If we already know [tex]X [/tex] and [tex]V_{ox}[/tex], we have to find the time (we will need it for the following equation):

[tex]t= \frac{X}{ V_{ox}}[/tex]  (6)

[tex]t=2.42s[/tex]  (7)

[tex]-y=V_{oy}.t+\frac{1}{2}g.t^{2}[/tex]   (8)

Where:

[tex]y[/tex] is the height of the building (in this case it has a negative sign because of the reference system we chose)

[tex]g=-9.8\frac{m}{s^{2}}[/tex] is the acceleration due gravity

Substituting the known values, including the time we found on equation (7) in equation (8), we will find the height of the building:

[tex]-y=(7.521\frac{m}{s})(2.42s)+\frac{1}{2}(-9.8\frac{m}{s^{2}}).(2.42s)^{2}[/tex]   (9)

[tex]-y=-10.52m[/tex]   (10)

Multiplying by -1 each side of the equation:

[tex]y=10.52m[/tex] >>>>This is the height of the building

Answer:

[tex]4.95\cdot 10^{-21} J[/tex]

Explanation:

First of all, let's convert everything into SI units:

n = 2.4 mol (number of gas moles)

[tex]p=11 atm = 1.11\cdot 10^6 Pa[/tex] (gas pressure)

[tex]V=4.3 L=4.3\cdot 10^{-3} m^3[/tex] (gas volume)

R = 8.31451 J/K · mol (gas constant)

The ideal gas equation states that

[tex]pV=nRT[/tex]

Solving for T, we find the gas temperature

[tex]T=\frac{pV}{nR}=\frac{(1.11\cdot 10^6)(4.3\cdot 10^{-3})}{(2.4)(8.31451)}=239.2 K[/tex]

And now we can find the average kinetic energy of the gas:

[tex]E_K = \frac{3}{2}kT[/tex]

where

k = 1.38066 × 10−23 J/K is the Boltzmann's constant

Substituting,

[tex]E_K = \frac{3}{2}(1.38066\cdot 10^{-23} J/K)(239.2 K)=4.95\cdot 10^{-21} J[/tex]

The average kinetic energy of the gas molecule is 4.97 × 10⁻²¹ J

From the question, we are to calculate the average kinetic energy of the gas molecule.

The average kinetic energy of a gas molecule can be calculated from the formula,

[tex]KE_{avg}=\frac{3}{2}k_{b}T[/tex]

Where [tex]k_{b}[/tex] is the Boltzmann's constant

and T is the temperature

Now, we will determine the temperature of the gas

From the given information

R = 8.31451 J/K.mol

n = 2.4 moles

V = 4.3 L

P = 11 atm = 1114.58 KPa

From the ideal gas equation

PV=nRT

Then, we can write that

[tex]T = \frac{PV}{nR}[/tex]

Putting the parameters into the equation, we get

[tex]T = \frac{1114.58 \times 4.3}{2.4 \times 8.31451}[/tex]

T = 240.1772

T ≅ 240.2 K

Now, for the average kinetic energy of the gas molecule

[tex]KE_{avg}=\frac{3}{2}k_{b}T[/tex]

From the given information

[tex]k_{b} = 1.38066 \times 10^{-23}[/tex]

∴ [tex]KE_{avg}=\frac{3}{2} \times 1.38066 \times 10^{-23} \times 240.2[/tex]

[tex]KE_{avg}= 4.97 \times 10^{-21} \ J[/tex]

Hence, the average kinetic energy of the gas molecule is 4.97 × 10⁻²¹ J

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the formula for momentum is velocity times mass

car :

1200 x 30 = 36000

truck:

2000 x 20 = 40000

Ans : truck has a greater momentum