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3 years ago

How does chemical energy hold molecules together?

2 answers:

7 0

So, bonds are what basically hold atoms together. For example : in a solid, the bonds smash the atoms together VERY tightly, which is mainly why a solid is a solid.

kvasek [131]3 years ago

3 0

Chemical energy holds molecules together by forming the bonds between atoms. the form of electric bonds.

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A 12.0N force with a fixed orientation does work on a

kvasek [131]

Answer:

(a) $\theta=62.31^{\circ}$

(b) $\theta=117.68^{\circ}$

Explanation:

It is given that,

Force acting on the particle, F = 12 N

Displacement of the particle, $d=(2.00i -4.00j+3.00k)\ m$

Magnitude of displacement, $d=\sqrt{2^2+4^2+3^2}= 5.38\ m$

(a) If the change in the kinetic energy of the particle is +30 J. The work done by the particle is given by :

$W=Fd\ cos\theta$

$\theta$ is the angle between force and the displacement

According to work energy theorem, the charge in kinetic energy of the particle is equal to the work done.

So,

$cos\theta=\dfrac{W}{Fd}$

$cos\theta=\dfrac{+30\ J}{12\times 5.38}$

$\theta=62.31^{\circ}$

(b) If the change in the kinetic energy of the particle is (-30) J. The work done by the particle is given by :

$cos\theta=\dfrac{W}{Fd}$

$cos\theta=\dfrac{-30\ J}{12\times 5.38}$

$\theta=117.68^{\circ}$

Hence, this is the required solution.

8 0

3 years ago

Can someone help me with this please

fomenos

Number 19 is frequency and not sure which question you asked!!!??

4 0

3 years ago

A 0.242 g sample of potassium is heated in oxygen. The result is 0.292 g of a crystalline compound. What is the formula of this

masha68 [24]

Answer:

Hello there Dude answer is B :D hope it helped mark me brainliest.

8 0

3 years ago

An object has an acceleration of 6.0 m/s/s. if the net force acting upon this object were doubled, then its new acceleration wou

Flauer [41]

F has direct relation with a
then doubling F cause acc. to get double i:e 6×2=12

5 0

3 years ago

An assumption of learning curve theory is _________

nalin [4]

Answer:

Unit time will decrease

Explanation:

6 0

3 years ago