In an atom where are the electrons with less energy most likely located?

Answers

Answer 1

Answer: We have to be very careful here !

An electron that has any energy can go galavanting around on its own, sight-seeing
and doing its own thing. That's not the situation with the electrons in an atom. The
energy of every electron in an atom is negative ... it "owes" the atom energy, and
that's why it stays bound to it. You have to pull on the electron ... give it some more
energy ... in order to break it free from the atom.

The electrons that are way out in the outer orbits are the easiest to rip away from the
atom ... they don't "owe" the atom much, their energy is the least negative, and you
don't have to give them much to settle their debt and release them from the atom.

The electrons that are down deep, closest to the nucleus, are the most tightly bound.
They're the ones whose energy is the most negative, and it takes a team of horses to
pull them free of the atom.

I know I'm going to catch flak for this answer, but I do believe it's the most technically
correct one: The electrons with the least energy are the ones whose energy is most
negative ... those in the first orbital, down deep in the atom, close to the nucleus.

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An observer notes that the pitch of a sound is becoming progressively lower. The observer can conclude that the sound is moving
"An airplane traveling at one third the speed of sound (i.e., 114 m/s) emits a sound of frequency 3.65 kHz. At what frequency does a stationary listener hear the sound as the plane approaches? Answer in units of kHz."

Why do you think sound travels faster in steel than it does in wood? (Hint: Think about the densities of the two materials, and how the particles might be arranged.)

Answers

Answer:

If sound waves of the same energy were passed through a block of wood and a block of steel, which is more dense than the wood, the molecules of the steel would vibrate at a slower rate. Sound moves faster through denser air because the molecules are closer together in dense air and sound can be more easily passed on.

Explanation:

What is the difference between transverse and longitudinal waves? Transverse waves always travel at smaller speeds than do longitudinal waves. In a transverse wave the disturbance always occurs perpendicular to the direction in which the wave travels, whereas in a longitudinal wave the disturbance always occurs parallel to the line of travel of the wave. Transverse waves always carry more energy than do longitudinal waves. In a transverse wave the disturbance always occurs parallel to the line of travel of the wave, whereas in a longitudinal wave the disturbance always occurs perpendicular to the direction in which the wave travels. Transverse waves always have greater frequencies than do longitudinal waves.

Answers

in transverse wave the disturbance always occur perpendicularto the direction. in wich the wave travels. where as longitudinal wava is disturbance always occur parallel to the direction in wich the wave travels.

What is the formula for calculating density?A. density=mass/volume
B. density=mass*volume
C. density=volume/mass
D. density=mass + volume

Answers

Density can be determined by themass of an object and how much it takes up space (volume). It is represented bythe formula D = M/V where D is the density in kg/m^3 or lb/ft^3, M is the massin kg or lb and V is the volume in m^3 or ft^3. The answer would be A. For example, you are given the mass of anobject of 40.5kg and a volume of 15m^3. Find its density.

D = M/V
D = (40.5 kg)/ (15 m^3)
D = 27/10 or2.7 kg/m^3

Answer:

My answer is A.

Explanation:

by using a density triangle, you would have to cover up the density and then it will show you, m over v. so that means you would have to divide.

On a sky coaster (human pendulum) that reaches 20 meters from it's equilibrium position, a man of 70 kg is able to reach a maximum speed of

Answers

Answer:

Explanation:

Using the principle of conservation of energy, the potential energy is converted to kinetic energy, assuming any losses.

Kinetic energy is given by ½mv²

Potential energy is given by mgh

Where m is the mass, v is the velocity, g is acceleration due to gravity and h is the height.

Equating kinetic energy to be equal to potential energy then

½mv²=mgh

Making v the subject of the formula

v=√(2gh)

Substituting 9.81 m/s² for g and 20 m for h then

v=√(2*9.81*20)=19.799 m/s

Rounding off, v is approximately 20 m/s

Answer:

19.8 m/s

Explanation:

During the motion of a pemdulum bob, it casually converts kinetic energy to potential energy and vice versa.

A pendulum bob reaches its maximum speed at a position closest to its equilibrium position and has its lowest when it is farthest from the equilibrium position.

The maximum speed of a pendulum bob based on the mass involved and the maximum displacement from the equilibrium position is obtained from

Maximum kinetic energy = Maximum potential energy

Maximum potential energy occurs at the farthest point from equilibrium, that is,

P.E(max) = mgh

Maximum kinetic energy = ½mv²

½mv² = mgh

v = √2gh

g = acceleration due to gravity = 9.8 m/s²

h = farthest height from equilibrium position = 20 m

v = √(2×9.8×20) = 19.8 m/s

Hope this Helps!!!

What is the momentum of a 52 kg carton that slides at 5.0m/s across an icy surface?

Answers

Formula for momentum is mass times velocity so you do 52 kg times 5 m/s and that equals 260 kg x m/s

A block of metal initially at 25°C is submerged in water initially at 75°C in a coffee cup. Which of the following is true? a. The final temperature of the coffee cup will be less than 20°C.
b. The final temperature of the coffee cup will be higher than 25°C but less than 75°C.
c. The final temperature of the coffee cup will be more than 80°C.
d. The final temperature of the coffee cup will be 80°C.

Answers

Answer:

b. The final temperature of the coffee cup will be higher than 25°C but less than 75°C.

Explanation:

We know in thermal equilibrium.

Heat loss by one object = Heat gain by other object.

Now, heat is loss by the object whose temperature is higher than other because heat travels from high temperature to other.

And the object who gain heat its temperature increases till both body reach same temperature.

In this case, water loss heat, therefore its temperature decreases.

Similarly , metal block is at low temperature so its temperature increases.

Therefore , both water and metal block must have temperature less than $75^0C$ and $25^0C$ to have thermal equilibrium.

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