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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?

Physics

1 answer:

Rasek [7]3 years ago

3 0

Answer:

The three choices are correct where, choice (b) If the atoms are moved farther apart, they experience forces resisting the separation and begin to move toward each other. And for choice (c) If the atoms are pushed closer together, they experience forces resisting the compression and begin to move far away from each other. Choice (a) also correct where a spring exerts forces to bring balls (atoms) closer together and also exerts forces to move balls (atoms) apart.

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Different units used to describe average velocity can be changed from one to another by the use of

lisov135 [29]

<span>Average velocity can be calculated by determining the total displacement divided by the total time of travel. The average velocity of an object does not tell us anything about what happens to it between the starting point and ending point. Average velocity is different from average speed because it considers the direction of travel and the overall change in position.</span>

4 0

2 years ago

A hockey puck slides across the ice at a constant velocity. Is the sliding puck in equilibrium? Why or why not?

geniusboy [140]

Answer:

Since the hockey puck is moving at constant velocity

So here we will have

$F_{net} = ma$

where we have

a = acceleration of the object

m = mass of object

so here since we know that acceleration is defined as rate of change in velocity

so here we will say that

$a = \frac{dv}{dt}$

$a = 0$

so we have

$F_{net} = 0$

so we will say that hockey puck is in equilibrium as there is no net force of it

3 0

3 years ago

Q|C A string with linear density 0.500 g/m is held under tension 20.0 N. As a transverse sinusoidal wave propagates on the strin

julia-pushkina [17]

A string with linear density 0.500 g/m.

Tension 20.0 N.

The maximum speed $v_{y, max}$

The energy contained in a section of string 3.00 m long as a function of $v_{y, max}$ .

We are given following data for string with linear density held under tension :

μ = 0.5 $\frac{g}{m}$

= 0.5 x 10⁻³ $\frac{kg}{m}$

T = 20 N

If string is L = 3m long, total energy as a function of $v_{y, max}$ is given by:

E = 1/2 x μ x L x ω² x A²

= 1/2 x μ x L x $v^{2} _{y, max}$

= 7.5 x 10⁻⁴ $v^{2} _{y, max}$

So, The total energy as a function of $v^{2} _{y, max}$ = 7.5 x 10⁻⁴ $v^{2} _{y, max}$

Learn more about linear density problem here:

brainly.com/question/17190616

#SPJ4

3 0

1 year ago

A baby carriage is sitting at the top of a hill that is 21 m high The carriage with the baby weighs 12 N

WITCHER [35]

Answer:E

252

Explanation:

The total mechanical energy of an object or system is given by:

Where

is the kinetic energy of the object and

is the potential energy of the object. The carriage, sitting motionless at the top of the hill, has only potential energy in the form of gravitational potential energy.

Gravitational potential energy is given by:

Where

is the mass of the object,

is the gravitational acceleration constant, and

is the height of the object above some specific reference point, in this case the ground

below.

The weight of a stationary object at the surface of the earth is equal to the force of gravity acting on the object.

→

We are given that the carriage weighs

, therefore

⋅

⇒

252

Answer link

Explanation:

5 0

3 years ago

Suppose that you lift four boxes individually, each at a constant velocity. The boxes have weights of 18 N, 6.0 N, 9.0 N, and 12

cricket20 [7]

Explanation:

It is known that the relation between work and force is as follows.

w = $F \times d cos (\theta)$

where, $\theta$ = angle between the applied force and direction of movement of the object which is zero in this case. As, cos (0) = 1.

Therefore, d = $\frac{w}{F}$

(i) For w = 36 J, and F = 9 N then value of d will be as follows.

d = $\frac{w}{F}$

= $\frac{36 J}{9 N}$

= 4 m

(ii) For w = 36 J, and F = 12 N then value of d will be as follows.

d = $\frac{w}{F}$

= $\frac{36 J}{12 N}$

= 3 m

(iii) For w = 36 J, and F = 6 N then value of d will be as follows.

d = $\frac{w}{F}$

= $\frac{36 J}{6 N}$

= 6 m

(iv) For w = 36 J, and F = 18 N then value of d will be as follows.

d = $\frac{w}{F}$

= $\frac{36 J}{18 N}$

= 2 m

4 0

3 years ago