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3 years ago

Why are two balls connected by a spring a good model for two atoms connected by a chemical bond?

1 answer:

8 0

Why are two balls connected by a spring a good model for two atoms connected by a chemical bond? (a) If the two atoms get farther apart than the equilibrium interatomic distance, they attract each other. (b) Each spring represents a real microscopic coiled metal wire that connects two adjacent atoms. If the two atoms get closer together than the equilibrium interatomic distance, they repel each other. (c) The magnitude of the force one atom exerts on another is proportional to the stretch or compression of the bond between them

Answer:

all the three options are correct

Explanation:

if the two atoms get closer together than the equilibrium inter atomic distance, they repel each other.

If the two atoms get farther apart than the equilibrium inter atomic distance, they attract each other.

The magnitude of the force one atom exerts on another is proportional to the stretch or compression of the bond between them

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Ann (mass 50 kg) is standing at the left end of a 15-m-long, 500 kg cart that has frictionless wheels and rolls on a frictionles

ivanzaharov [21]

Answer:

13.5 m

Explanation:

M = Mass of cart = 500 kg

m = Ann's mass = 50 kg

$v_m$ = Velocity of Ann relative to cart = 5 m/s

$v_M$ = Velocity of Cart relative to Ann

As the linear momentum of the system is conserved

$Mv_M+mv_m=0\\\Rightarrow v_M=-\frac{mv_m}{M}\\\Rightarrow v_M=-\frac{50\times 5}{500}\\\Rightarrow v_M=-0.5\ m/s$

Time taken to reach the right end by Ann

$Time=\frac{Distance}{Speed}\\\Rightarrow Time=\frac{15}{5}=3\ s$

Distance the cart will move in the 3 seconds

$Distance=Speed\times Time\\\Rightarrow Distance=-0.5\times 3=-1.5\ m$

The negative sign indicates opposite direction

Movement of Ann will be the sum of the distances

$15+(-1.5)=13.5\ m$

The net movement of Ann is 13.5 m

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2 years ago

3. Explain why it is, regardless of the location, at a certain distance between the two points, you will perceive the two points

faust18 [17]

Answer:

Hello your question is missing some parts attached below is the missing part of your question

answer: <em>many primary sensory Neurons will converge and become a single Neuron and the single Neuron will send a single harmonized signal to the Brain</em>.

Explanation:

The reason regardless of the location that will make you perceive the two points as a single point rather than as two distinct points is that many primary sensory Neurons will converge and become a single Neuron and the single Neuron will send a single harmonized signal to the Brain.

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2 years ago

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olga nikolaevna [1]

Answer:

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Explanation:

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3 years ago

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lora16 [44]

Answer:

yes that is correct

Explanation:

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3 years ago

Which equation will give you the speed of a wave?

arlik [135]

Wave speed = wave length * frequency

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3 years ago

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