The negative charge distribution that surrounds the nucleus of an atom is due to the atom's electron cloud. As the electrons move around a molecule, it can make a certain position, for an instant, look negative when the electrons are on one side and when they are away from this side it can look positive. This can cause intermolecular attraction and is known as the London Dispersion force of attraction.

4 0

3 years ago

We have a 10kg ball and a 15kg ball. We drop them from the top of the science building while objects are at rest and there is no

Mashcka [7]

They will hit the ground at the same time, as mass is negligible when calculating the acceleration of gravity when there is no air resistance

3 0

3 years ago

An object of inertia 0.5kg is hung from a spring, and causes it to extend 5cm. In an elevator accelerating downward at 2 m/s^2 ,

Sidana [21]

Answer:3.98cm

Explanation:

given data

mass of object $\left ( m\right )$ =0.5kg

intial extension=5 cm

elevator acceleration=2 m/ $s^2$

From FBD of intial position

Kx=mg

K= $\frac{0.5\times 9.81}{0.05}$

k=98.1 N/m

From FBD of second situation

mg-k $x_0$ =ma

k $x_0$ =m(g-a)

$x_0$ = $\frac{0.5(9.81-2)}{98.1}$

$x_0$ =3.98cm

4 0

3 years ago

2. ____________________________ can cause a stationary object to start moving or a moving object to change its speed or directio

Vikentia [17]

As per Newton's law of inertia we can say every object will move in its state of motion either in the state of rest or will move with same constant velocity until some unbalanced external force will act upon it

so here we have to fill the space which says that stationary object can start or moving object will change its direction only in which case

so here the correct answer should be Unbalanced Force condition we will obtain such situation.

so we have

<u>Unbalance force</u> can cause a stationary object to start moving or a moving object to change its speed or direction or both.

7 0

3 years ago